https://pop.com.sgExplosive pop stories with broad entertainment appeal.en-usFri, 07 Aug 2026 02:37:48 -0400https://pop.com.sg/rsync-compare-dest-does-not-work.htmlhttps://pop.com.sg/rsync-compare-dest-does-not-work.htmlI have these directories SRC, DST, COMPARE: /opt/SRC file1 file2 file3 /opt/DST file1 file2 /opt/COMPARE empty I wish: $ ls /opt/COMPARE file3 But when I run : rsync -avz --compare-dest=/......Fri, 07 Aug 2026 06:33:27 -0400https://pop.com.sg/what-is-disk-dev-sdx.htmlhttps://pop.com.sg/what-is-disk-dev-sdx.htmlI am following this link to create a bootable SD card. I am stuck at mkfs.ext4 <= 1.42. for: DISK=/dev/mmcblk0 The terminal complains that no 'for' command is found. I suppose I should leav......Fri, 07 Aug 2026 06:24:17 -0400https://pop.com.sg/weird-output-while-using-sed-to-rename-files.htmlhttps://pop.com.sg/weird-output-while-using-sed-to-rename-files.htmlI am using Ubuntu 20.04.2 with GNU sed version 4.7. I have a bunch of music files that got named weirdly because they did not have all the info I specified to be in the file name. For example, "...Fri, 07 Aug 2026 06:20:50 -0400https://pop.com.sg/how-to-install-python-igraph.htmlhttps://pop.com.sg/how-to-install-python-igraph.htmlI am following these instructions to install python-igraph. Adding PPA words and update works. But the install complains of the following: Couldn't find any package whose name or description mat......Fri, 07 Aug 2026 06:16:13 -0400https://pop.com.sg/add-not-to-if-statement-in-shell-script.htmlhttps://pop.com.sg/add-not-to-if-statement-in-shell-script.htmlI have the following script that should exist if the user does not exist. #check if user currently exists on system if id $User > /dev/null 2>&1 then #user exists no need to exit pro......Fri, 07 Aug 2026 06:16:12 -0400https://pop.com.sg/how-can-i-fix-keyboard-and-trackpad-on-my-surface-laptop-3.htmlhttps://pop.com.sg/how-can-i-fix-keyboard-and-trackpad-on-my-surface-laptop-3.htmlI don't know if this is the right place to ask this question, but i have some problems with Ubuntu 20.04 LTS on my Surface Laptop 3. In the GRUB all works but ,when the OS starts, the keyboard, the ...Fri, 07 Aug 2026 05:57:32 -0400https://pop.com.sg/how-to-get-netextender-vpn-client-on-ubuntu-13-04-working.htmlhttps://pop.com.sg/how-to-get-netextender-vpn-client-on-ubuntu-13-04-working.htmlI've got a Ubuntu 13.04 desktop and I need to connect to a Sonicwall VPN appliance using NetExtender. TL,DR, the VPN connects fine, but then I can't reach any internet or LAN websites. Details: ...Fri, 07 Aug 2026 05:51:57 -0400https://pop.com.sg/how-to-install-dpkg-reconfigure.htmlhttps://pop.com.sg/how-to-install-dpkg-reconfigure.htmlI want to install dpkg-reconfigure in Ubuntu 12.04 LTS install on Amazon EC2? How to go about it?...Fri, 07 Aug 2026 05:39:12 -0400https://pop.com.sg/how-do-i-change-the-hold-delay-to-move-a-unity-launcher-icon.htmlhttps://pop.com.sg/how-do-i-change-the-hold-delay-to-move-a-unity-launcher-icon.htmlI need to increase the hold delay to move an icon in the Unity launcher in Ubuntu 13.10. How do I do that ? I need this because of latency of remote desktop access: a short click acts as a long on......Fri, 07 Aug 2026 05:38:48 -0400https://pop.com.sg/how-to-change-a-user-home-directory-to-adirectory-that-already-exits.htmlhttps://pop.com.sg/how-to-change-a-user-home-directory-to-adirectory-that-already-exits.htmlI have a website user who I want to be able to upload content to a folder on my server. I thought ok, I'll create a new user, and change his home directory to the folder where his stuff is already.......Fri, 07 Aug 2026 05:35:01 -0400https://pop.com.sg/checking-if-mac-address-is-present-on-network-still-doesn-039-t-work-p.htmlhttps://pop.com.sg/checking-if-mac-address-is-present-on-network-still-doesn-039-t-work-p.htmlThis is kind of a follow up to this post of mine. I have the mac-address of my phone (samsung galaxy S9; though it shouldn't matter). I want to check if it's on the network or not. It doesn't have a ...Fri, 07 Aug 2026 05:28:24 -0400https://pop.com.sg/apt-get-update-not-working-in-ubuntu-16-04-temporary-failure-resolving.htmlhttps://pop.com.sg/apt-get-update-not-working-in-ubuntu-16-04-temporary-failure-resolving.htmlFirst of all I am new to Linux command line. I never worked with it before. My problem is that the command apt-get update will just return: Err:1 http://us.archive.ubuntu.com/ubuntu xenial InRelea......Fri, 07 Aug 2026 05:17:07 -0400https://pop.com.sg/is-it-safety-to-erase-the-etc-apt-sources-list-d-folder-files.htmlhttps://pop.com.sg/is-it-safety-to-erase-the-etc-apt-sources-list-d-folder-files.htmlI'm using Ubuntu Studio 20.04 LTS, upgraded from 18.04, upgrade from 16.04 LTS. Because some problem (not related with this question), I discovered I have a folder called /etc/apt/sources.list.d Wh......Fri, 07 Aug 2026 04:55:29 -0400https://pop.com.sg/will-ubuntu-run-smoothly-on-my-2012-macbook-air.htmlhttps://pop.com.sg/will-ubuntu-run-smoothly-on-my-2012-macbook-air.htmlTech Specs: 1.7GHz dual-core Intel Core i5 (Turbo Boost up to 2.6GHz) with 3MB shared L3 cache 4GB of 1600MHz DDR3L on-board memory Intel HD Graphics 4000 64GB flash storage...Fri, 07 Aug 2026 04:52:00 -0400https://pop.com.sg/can-i-use-gpg-on-both-ubuntu-and-windows-to-encrypt-my-files.htmlhttps://pop.com.sg/can-i-use-gpg-on-both-ubuntu-and-windows-to-encrypt-my-files.htmlI have a private gpg key for Ubuntu. My question is: How can I use same encryption key for both Windows and Ubuntu? If I use gpg in Ubuntu, can I use that same gpg key with Windows or vice versa......Fri, 07 Aug 2026 04:44:42 -0400https://pop.com.sg/passwordless-login-with-yubikey-5-nfc.htmlhttps://pop.com.sg/passwordless-login-with-yubikey-5-nfc.htmlI just bought a Yubikey 5 NFC and have set it up per their instructions on Ubuntu 19.04. But my preferred use case is to use the key as passwordless option (if it's plugged in; allow access - if i......Fri, 07 Aug 2026 04:42:47 -0400https://pop.com.sg/how-to-see-login-history.htmlhttps://pop.com.sg/how-to-see-login-history.htmlIs it possible to see the login history, i mean to see if someone has used the computer in my absence and when he used it . if it is possible, where can i get the log ? if not, is there a program t......Fri, 07 Aug 2026 04:40:18 -0400https://pop.com.sg/where-is-the-path-for-the-java-command-defined-in-ubuntu.htmlhttps://pop.com.sg/where-is-the-path-for-the-java-command-defined-in-ubuntu.htmlI am struggling to get my Ubuntu 20.04 to get to recognize the correct java version. I have set the correct environmental variable inside a shell script in /etc/profile.d/ My $JAVA_HOME output: root@...Fri, 07 Aug 2026 04:39:07 -0400https://pop.com.sg/ubuntu-18-04-suddenly-no-sound-and-no-wifi.htmlhttps://pop.com.sg/ubuntu-18-04-suddenly-no-sound-and-no-wifi.htmlI've been using ubuntu 18.04 since I got this Dell laptop in 2018. I don't have any dual thing, just ubuntu. Yesterday suddenly sound is gone and only Dummy Output is shown in settings, but I still......Fri, 07 Aug 2026 04:29:33 -0400https://pop.com.sg/changing-the-editor-background-colour-in-eric-ide.htmlhttps://pop.com.sg/changing-the-editor-background-colour-in-eric-ide.htmlI'm using the Eric python IDE (version 6), but I can't find a way to change the background colour of the code editor. It has picked up the dark background colour of my Kubuntu theme, making code very ...Fri, 07 Aug 2026 04:28:46 -0400https://pop.com.sg/canon-mg2550-printer-how-to-install-printer-driver.htmlhttps://pop.com.sg/canon-mg2550-printer-how-to-install-printer-driver.htmlI'm trying to set up a new printer but the problem is I never used Linux before. It's a Canon MG2550 and the installation CD is only for windows. Firstly it doesn't appear on the list of printer ......Fri, 07 Aug 2026 04:23:21 -0400https://pop.com.sg/permission-denied-when-i-try-to-cd-into-any-folder.htmlhttps://pop.com.sg/permission-denied-when-i-try-to-cd-into-any-folder.htmlI recently did a fresh install of Ubuntu 16.04. When trying to cd into any folder in my home directory I get the following: bash: cd: Documents: Permission denied I ran ls -lstr and this was the ......Fri, 07 Aug 2026 04:13:55 -0400https://pop.com.sg/how-can-i-remove-python-2-7-after-installing-python-3-3.htmlhttps://pop.com.sg/how-can-i-remove-python-2-7-after-installing-python-3-3.htmlI have successfully installed python 3.3 on Ubuntu 12.10. Since I don’t need multiple versions of python, I want to remove the existing python 2.7. When I try to do that, using sudo apt-get remove ...Fri, 07 Aug 2026 04:03:55 -0400https://pop.com.sg/can-not-push-my-local-project-into-bitbucket-repository-using-ubuntu-c.htmlhttps://pop.com.sg/can-not-push-my-local-project-into-bitbucket-repository-using-ubuntu-c.htmlI am facing some issue. I was trying to push my total project into my bit bucket repository but it failed.its showing me the following message. To https://subhrajyoti@bitbucket.org/subhrajyoti/...Fri, 07 Aug 2026 03:50:45 -0400https://pop.com.sg/how-to-disable-tls-ssl-in-vsftpd-only-for-a-specific-user.htmlhttps://pop.com.sg/how-to-disable-tls-ssl-in-vsftpd-only-for-a-specific-user.htmlI have added ssl_enable=YES to vsftpd.conf to enable secure connection as per this tutorial: https://www.digitalocean.com/community/tutorials/how-to-configure-vsftpd-to-use-ssl-tls-on-an-ubuntu-vps......Fri, 07 Aug 2026 03:49:10 -0400https://pop.com.sg/how-do-i-check-which-shell-i-am-using.htmlhttps://pop.com.sg/how-do-i-check-which-shell-i-am-using.htmlI read that terminal is nothing but shell, and Unix provides different flavors of shells: Bourne shell (sh) C shell (csh) TC shell (tcsh) Korn shell (ksh) Bourne Again shell (bash) Questions: Wh......Fri, 07 Aug 2026 03:47:21 -0400https://pop.com.sg/no-secondary-button-right-click-on-touchpad.htmlhttps://pop.com.sg/no-secondary-button-right-click-on-touchpad.htmlI'm experiencing a serious problem with the new Ubuntu 18.04: System Dell XPS 13 with a freshly installed Ubuntu 18.04 LTS. Problem description The touchpad provides only primary button (single c......Fri, 07 Aug 2026 03:29:38 -0400https://pop.com.sg/prevent-du-command-report-inflated-info-about-snap-directories.htmlhttps://pop.com.sg/prevent-du-command-report-inflated-info-about-snap-directories.htmlI have an Ubuntu 20.04 server installed on a single 8GB drive. The default installation has some "snap"s installed also. So, there are some "squashfs" file systems also reported by the df command: ......Fri, 07 Aug 2026 03:15:16 -0400https://pop.com.sg/permanent-path-variable.htmlhttps://pop.com.sg/permanent-path-variable.htmlHow will I make this /media/De Soft/mongodb/bin PATH variable permanent? Everyone is saying "export PATH=$PATH:media/De\ Soft/mongodb/bin to your ~/.profile, or .bashrc, or .zshenv depending on your ...Fri, 07 Aug 2026 03:09:50 -0400https://pop.com.sg/how-to-completely-remove-firefox-so-it-won-039-t-update.htmlhttps://pop.com.sg/how-to-completely-remove-firefox-so-it-won-039-t-update.htmlI really don't like firefox, so the first thing I did after installation was install chromium as a browser and removed firefox via terminal using: sudo apt-get remove --purge firefox But every time ...Fri, 07 Aug 2026 03:06:06 -0400https://pop.com.sg/logitech-illuminated-k800-keyboard-not-working-properly-after-boot-up.htmlhttps://pop.com.sg/logitech-illuminated-k800-keyboard-not-working-properly-after-boot-up.htmlWhen I boot my machine, my Logitech Illuminated K800 keyboard connected via a Unifying Receiver does not work properly: there is lag between a keypress and the letter appearing on the screen and some ...Fri, 07 Aug 2026 03:05:15 -0400https://pop.com.sg/ctrl-alt-f7-shortcut.htmlhttps://pop.com.sg/ctrl-alt-f7-shortcut.htmlCan someone explain what this combination does? I mistakenly pressed it on Ubuntu 20.10 and it showed me a screen with the same output of fsck (“clean” and the number of blocks)... now I am worried......Fri, 07 Aug 2026 02:53:15 -0400https://pop.com.sg/stop-using-flash-or-improve-the-flash-experience.htmlhttps://pop.com.sg/stop-using-flash-or-improve-the-flash-experience.htmlI'd like to setup my Ubuntu to work without Flash (= not installed), but still be able to view videos on sites like Youtube, wisevid, etc. I want to try this because recently Flash has crashed a ...Fri, 07 Aug 2026 02:37:42 -0400https://pop.com.sg/print-the-first-column.htmlhttps://pop.com.sg/print-the-first-column.htmlI want to print column 1 of this file. I used this command: awk '{print $1}' but it just printed the first word of the 1st column. DATA ABC transporters ABC transporters ...Fri, 07 Aug 2026 02:33:27 -0400https://pop.com.sg/how-do-i-print-a-large-single-page-in-several-small-pages.htmlhttps://pop.com.sg/how-do-i-print-a-large-single-page-in-several-small-pages.htmlMy use case is an A3 pdf landscape sheet that I needed printed in two A4 portraits. I am using desktop ubuntu 16.04. What I have tried What I have managed to do is use a command-line program that h......Fri, 07 Aug 2026 02:33:27 -0400https://pop.com.sg/use-bash-and-ffmpeg-in-18-04-to-concatenate-multiple-3gp-files-to-one-.htmlhttps://pop.com.sg/use-bash-and-ffmpeg-in-18-04-to-concatenate-multiple-3gp-files-to-one-.htmlI have these example files in an Ubuntu 18.04 system: VID_20190407_160033.3gp VID_20190407_161444.3gp VID_20190407_161609.3gp VID_20190415_183315.3gp VID_20190415_183411.3gp ...Fri, 07 Aug 2026 02:32:54 -0400https://pop.com.sg/cant-install-php-7-2-on-ubuntu-20-04.htmlhttps://pop.com.sg/cant-install-php-7-2-on-ubuntu-20-04.htmlI added ondrej PPA. And tried install php 7.2, but looks like PPA has not been updated yet. What are my workarounds?...Fri, 07 Aug 2026 02:30:15 -0400https://pop.com.sg/gimp-can-039-t-use-fill-bucket-to-fill-selection.htmlhttps://pop.com.sg/gimp-can-039-t-use-fill-bucket-to-fill-selection.htmlI have a small image file (a .gif file containing ) with a transparent background and some small red squares in the foreground. I would like to change the foreground colour from red to blue (RGB 0......Fri, 07 Aug 2026 02:28:21 -0400https://pop.com.sg/uninstalling-package-python3-10-nuked-half-of-my-system.htmlhttps://pop.com.sg/uninstalling-package-python3-10-nuked-half-of-my-system.htmlI upgraded to the latest Ubuntu 22.04 LTS. Before I had python 3.9 but I needed 3.10 so I installed, sudo apt install python3.10 After the update, the standard python was bumped to 3.10 so I no lo......Fri, 07 Aug 2026 02:25:43 -0400https://pop.com.sg/how-to-open-gui-folder-manager-in-awesome-wm.htmlhttps://pop.com.sg/how-to-open-gui-folder-manager-in-awesome-wm.htmlI have installed awesome several hours ago. I do not know how to open folders in GUI. How to open graphical folder manager in Awesome WM ? I mean the default GUI folder in Awesome WM....Fri, 07 Aug 2026 02:19:19 -0400https://pop.com.sg/dash-to-panel-not-showing-running-indicator-for-nautilus.htmlhttps://pop.com.sg/dash-to-panel-not-showing-running-indicator-for-nautilus.htmlI use the extension Dash to Panel to combine the top bar and the dock, because I have a small 768p screen and both things takes a lot of space. Since I upgraded to 21.10 the bottom bar doesn't show......Fri, 07 Aug 2026 02:14:13 -0400https://pop.com.sg/not-allowed-to-create-user-with-grant.htmlhttps://pop.com.sg/not-allowed-to-create-user-with-grant.htmlI was trying to install wordpress on ubuntu using the link and struck at https://ubuntu.com/tutorials/install-and-configure-wordpress#4-configure-database When I run this command,I get the error- ......Fri, 07 Aug 2026 02:13:47 -0400https://pop.com.sg/why-is-a-user-with-root-privileges-not-in-anymore.htmlhttps://pop.com.sg/why-is-a-user-with-root-privileges-not-in-anymore.htmlJust out of curiosity, I would like to know why, when I log in as root, I am not in /home/user anymore. What's the reason and what does /root directory do exactly? I'm not an advanced user. Please ...Fri, 07 Aug 2026 02:12:07 -0400https://pop.com.sg/gimp-tiff-save-cannot-handle-indexed-images-with-alpha-channel.htmlhttps://pop.com.sg/gimp-tiff-save-cannot-handle-indexed-images-with-alpha-channel.htmlWhen I wanted to save TIFF file, I got this message box: TIFF save cannot handle indexed images with alpha channel Although I had no alpha layer. Here is an example which cannot be exported to T......Fri, 07 Aug 2026 02:05:33 -0400https://pop.com.sg/how-to-disable-plank-application-on-ubuntu-startup.htmlhttps://pop.com.sg/how-to-disable-plank-application-on-ubuntu-startup.htmlI have installed Plank program on my Ubuntu Mate 16.04. Plank logo But after first run it always run on system startup. I don't want to uninstall it, but I want to disable startup run. And there i......Fri, 07 Aug 2026 02:03:23 -0400https://pop.com.sg/how-to-add-an-extension-to-all-files-via-terminal.htmlhttps://pop.com.sg/how-to-add-an-extension-to-all-files-via-terminal.htmlI would like to add the .zip extension to all files. I tried this, however it does not work: ls | awk '{print $1 " " $1".zip"}' | xargs mv -f...Fri, 07 Aug 2026 02:02:12 -0400https://pop.com.sg/cant-access-phpmyadmin-after-wordpress-installation-lamp-stack.htmlhttps://pop.com.sg/cant-access-phpmyadmin-after-wordpress-installation-lamp-stack.htmlinitially i could able to log in phpmyadmin before i excecute the installtion of wordpress using http://127.0.0.1:8888/phpmyadmin .But after i had install wordpress environment ,i have issue on ...Fri, 07 Aug 2026 02:02:00 -0400https://pop.com.sg/youtube-dl-file-download-progress-with-zenity-progress-bar.htmlhttps://pop.com.sg/youtube-dl-file-download-progress-with-zenity-progress-bar.htmlHow to add youtube-dl file download progress percentage to zenity progress bar sample code (just an example, not a working one) #!/bin/sh ( progress=$(youtube-dl --extract-audio --audio-qualit......Fri, 07 Aug 2026 02:00:39 -0400https://pop.com.sg/ubuntu-16-04-and-vim-youcompleteme-plugin-install-fail.htmlhttps://pop.com.sg/ubuntu-16-04-and-vim-youcompleteme-plugin-install-fail.htmlOS: Ubuntu 16.04 LTS vim: already installed with python by source from apt-get source vim then, apt-get install vim-youcompleteme, it is ok for now. I check the guide in, and say: vam install ...Fri, 07 Aug 2026 02:00:34 -0400https://pop.com.sg/how-can-i-change-the-mod-key-in-awesome-wm-from-windows-key-to-meta.htmlhttps://pop.com.sg/how-can-i-change-the-mod-key-in-awesome-wm-from-windows-key-to-meta.htmlI recently got a happy hacking keyboard 2 professional that has a meta key instead of windows keys. Since I used to use the windows key to change between screens in awesome window manager (local mo......Fri, 07 Aug 2026 01:59:21 -0400https://pop.com.sg/tftp-trouble-timeout-before-file-found.htmlhttps://pop.com.sg/tftp-trouble-timeout-before-file-found.htmlI've installed TFTP to the best of my knowledge and am trying to perform a basic function test of: get uImage When run as a normal user, I get permission denied. When using sudo it replies back ...Fri, 07 Aug 2026 01:45:35 -0400https://pop.com.sg/what-is-the-default-password-for-ubuntu-12-04-duplicate.htmlhttps://pop.com.sg/what-is-the-default-password-for-ubuntu-12-04-duplicate.htmlPossible Duplicate: How do I reset a lost Administrative (root) password? I've just had someone install Ubuntu 12.04. I am not a techie - just a user. I am now asked for a password which I do ......Fri, 07 Aug 2026 01:45:15 -0400https://pop.com.sg/difference-in-use-between-pwd-and-pwd.htmlhttps://pop.com.sg/difference-in-use-between-pwd-and-pwd.htmlTo print current/present working directory environment variable $PWD and command pwd are available. So, What is difference in usage of both? or What should be chose for specific purpose?...Fri, 07 Aug 2026 01:43:32 -0400https://pop.com.sg/how-to-remove-things-from-the-desktop-without-deleting-them-or-unpinni.htmlhttps://pop.com.sg/how-to-remove-things-from-the-desktop-without-deleting-them-or-unpinni.htmlI have added some apps and programs to the desktop (since I'll be using them often), but then I found that I can actually pin my favorite programs to the launcher. So, now I don't want anything on......Fri, 07 Aug 2026 01:31:52 -0400https://pop.com.sg/installing-webstorm-not-appearing-in-programs-duplicate.htmlhttps://pop.com.sg/installing-webstorm-not-appearing-in-programs-duplicate.htmlI am new to Linux. I want to install webstorm. I have the files and run the .sh file in terminal which launches the software. However it seems I always have to do this, I cant run it without hav......Fri, 07 Aug 2026 01:27:51 -0400https://pop.com.sg/ubuntu-hyper-v-guest-display-resolution-win-10-15-04.htmlhttps://pop.com.sg/ubuntu-hyper-v-guest-display-resolution-win-10-15-04.htmlI've got a Hyper-V on a WINDOWS 10 Surface and I'm using Ubuntu 15.04 as a guest OS. I've successfully resized the Ubuntu screen in a Hyper-V with Windows 8 and 14.04 using the recommendations foun......Fri, 07 Aug 2026 01:26:23 -0400https://pop.com.sg/is-nomodeset-still-required.htmlhttps://pop.com.sg/is-nomodeset-still-required.htmlI'm going to be installing Ubuntu 15.10 soon after a break from Linux for a while. I would like to know if nomodeset is still required on newer Ubuntu releases and newer nVidia GPUs. I have a GTX97......Fri, 07 Aug 2026 01:13:30 -0400https://pop.com.sg/why-is-the-installer-not-showing-any-partitions.htmlhttps://pop.com.sg/why-is-the-installer-not-showing-any-partitions.htmlI'm having a problem installing Ubuntu, and Kali as well. I downloaded the iso from the official site & tried installing using USB. I also tried desktop installation, but the problem is same. It ...Fri, 07 Aug 2026 01:02:10 -0400https://pop.com.sg/how-to-check-if-a-command-succeeded.htmlhttps://pop.com.sg/how-to-check-if-a-command-succeeded.htmlIs there any way to check if there is an error in executing a command? Example : test1=`sed -i "/:@/c connection.url=jdbc:oracle:thin:@$ip:1521:$dataBase" $search` valid $test1 function valid (......Fri, 07 Aug 2026 00:59:44 -0400https://pop.com.sg/how-to-remove-python-2-from-ubuntu-20-04.htmlhttps://pop.com.sg/how-to-remove-python-2-from-ubuntu-20-04.htmlI've upgraded recently from Ubuntu 18.04 to 20.04. But I can see that Python2 is still the default instead of python 3.8.2. $ python -V Python 2.7.18rc1 $ python3 -V Python 3.8.2 Is it possibl......Fri, 07 Aug 2026 00:59:09 -0400https://pop.com.sg/how-to-set-the-jdk-for-android-studio.htmlhttps://pop.com.sg/how-to-set-the-jdk-for-android-studio.htmlI can't compile a default new project for Android 2.1 because(?) the JDK used by Android Studio is JDK 1.7 but it should be JDK 1.6. To change it I go to File -> Project Structure and try to find ......Fri, 07 Aug 2026 00:54:58 -0400https://pop.com.sg/using-rsync-do-compress-whole-directory-during-copy.htmlhttps://pop.com.sg/using-rsync-do-compress-whole-directory-during-copy.htmlFiles, Folders, Sub folders from system1 are successfully copying to system2 using below command rsync -avzP -u -v -e ssh /opt/lampp/htdocs/files/* demo@192.168.157.130:~/files_backup I need......Fri, 07 Aug 2026 00:54:07 -0400https://pop.com.sg/device-type-loop-in-mount-command.htmlhttps://pop.com.sg/device-type-loop-in-mount-command.htmlI was wondering what "loop" mean in this usage of mount: mount -t iso9660 -o loop matlab.iso /media/cdrom0 Is it a type of device? What does this device type "loop" mean? Can I choose other device ...Fri, 07 Aug 2026 00:53:12 -0400https://pop.com.sg/laptop-slows-down-while-charging-battery.htmlhttps://pop.com.sg/laptop-slows-down-while-charging-battery.htmlLaptop Model: Dell Lattitude 5440 OS: Ubuntu 12.04. While charging my laptop battery i've noticed the following: Mouse pointer moves very slowly. computer also slows a bit. This problem was not ...Fri, 07 Aug 2026 00:45:08 -0400https://pop.com.sg/aarch64-linux-gnu-gcc-error-trying-to-exec-039-cc1plus-039-execvp-no-s.htmlhttps://pop.com.sg/aarch64-linux-gnu-gcc-error-trying-to-exec-039-cc1plus-039-execvp-no-s.htmlI am trying to build a C++ file with aarch64-linux-gnu-gcc for Raspberry Pi 3 64 bit and I am running this command : aarch64-linux-gnu-gcc -mcpu=cortex-a53 test.cpp But I am getting this error: aa......Fri, 07 Aug 2026 00:21:22 -0400https://pop.com.sg/certain-keyboard-keys-become-unresponsive-how-to-fix-without-reboot.htmlhttps://pop.com.sg/certain-keyboard-keys-become-unresponsive-how-to-fix-without-reboot.htmlSometimes, some of my keyboard keys become unresponsive. (s, c, p, q, arrows, CTRL+shortcuts... might be related to a CTRL or ALT key registering as constantly pressed?) I would normally suspect a ...Fri, 07 Aug 2026 00:20:12 -0400https://pop.com.sg/issue-mounting-nfs-share-with-ubuntu-22-04.htmlhttps://pop.com.sg/issue-mounting-nfs-share-with-ubuntu-22-04.htmlI have a QNAP NAS with NFS shares on my LAN and am trying to mount them on my mostly vanilla Ubuntu 22.04 install. Running showmount on the client shows the NFS shares: ~$ showmount -e nas.localdom......Fri, 07 Aug 2026 00:20:11 -0400https://pop.com.sg/kdenlive-v21-crashes-during-render.htmlhttps://pop.com.sg/kdenlive-v21-crashes-during-render.htmlI'm using Kdenlive v21.04.3 on Ubuntu 20.04.2. When I try to render, either the PC freezes, the PC reboots on its own, or Kdenlive stays up in various states. Occasionally Kdenlive provides an erro......Fri, 07 Aug 2026 00:10:04 -0400https://pop.com.sg/how-to-install-annotator-from-elementary-os-appcenter-in-ubuntu.htmlhttps://pop.com.sg/how-to-install-annotator-from-elementary-os-appcenter-in-ubuntu.htmlAnnotator is a lightweight application for annotating images. It is much simpler and faster to edit an image in annotator than in GIMP. It was recently featured in OMG! Ubuntu!. How to install it in ...Fri, 07 Aug 2026 00:10:03 -0400https://pop.com.sg/where-is-var-log-messages.htmlhttps://pop.com.sg/where-is-var-log-messages.htmlJust installed natty, and cannot find /var/log/messages. Also, /var/log/daemon.log is missing. What happened? Why are they no longer present? And where I can find the same log information?...Thu, 06 Aug 2026 23:58:46 -0400https://pop.com.sg/after-windows-update-ubuntu-second-screen-not-detected.htmlhttps://pop.com.sg/after-windows-update-ubuntu-second-screen-not-detected.htmlUbuntu worked fine before Windows update on my SSD. Kernel settings reseted for some reason.I readjusted BIOS, I enabled PCI 1 instead of motherboard setting. 1 hdmi and 1 dvi cable is connected to......Thu, 06 Aug 2026 23:54:45 -0400https://pop.com.sg/how-to-disable-page-table-isolation-to-regain-performance-lost-due-to-.htmlhttps://pop.com.sg/how-to-disable-page-table-isolation-to-regain-performance-lost-due-to-.htmlBecause of the current Intel CPU security hole issue, there is a patch expected which slows down the system performance. How can I make sure that this patch will not be installed on my Ubuntu system?...Thu, 06 Aug 2026 23:50:52 -0400https://pop.com.sg/how-can-i-split-the-standard-ubuntu-terminal.htmlhttps://pop.com.sg/how-can-i-split-the-standard-ubuntu-terminal.htmlI would like to have several terminals in the same window. I know I can have tabs, but with them we can't see two terminals at a time. I know Terminator is another terminal able to do this, but I ......Thu, 06 Aug 2026 23:49:17 -0400https://pop.com.sg/recursively-rename-all-files-whose-name-starts-with-a-dash.htmlhttps://pop.com.sg/recursively-rename-all-files-whose-name-starts-with-a-dash.htmlIn terminal I can rename a single file that starts with a dash, i.e. mv ./-file file I can also rename all files in a directory that start with a dash, i.e. for f in ./-*; do rename 's/-//' "$f"; ...Thu, 06 Aug 2026 23:36:59 -0400https://pop.com.sg/flv-to-mp4-converter-in-trusty.htmlhttps://pop.com.sg/flv-to-mp4-converter-in-trusty.htmlAnybody recommend a GUI app (preferably in Ubuntu repos) to convert from .flv to .mp4 other than Transmageddon? Transmageddon now crashes in Trusty....Thu, 06 Aug 2026 23:28:20 -0400https://pop.com.sg/user-alexander-tsvetkov-ask-ubuntu.htmlhttps://pop.com.sg/user-alexander-tsvetkov-ask-ubuntu.htmlQ&A for Ubuntu users and developers...Thu, 06 Aug 2026 23:27:30 -0400https://pop.com.sg/reloading-iptables.htmlhttps://pop.com.sg/reloading-iptables.htmlI made changes to iptables config file in /etc/iptables/filter in Ubuntu and want to reload them. I read the man page and also googled but couldn't find the information. Any help will be appreciated....Thu, 06 Aug 2026 23:20:21 -0400https://pop.com.sg/22-04-wifi-keeps-disconnecting-for-a-few-seconds-frequently.htmlhttps://pop.com.sg/22-04-wifi-keeps-disconnecting-for-a-few-seconds-frequently.htmlMy wifi connection keeps disconnecting frequently (say once in a couple of minutes) sometimes it gets back and sometimes I need to activate and deactivate aeroplane mode. I tried to change my network ...Thu, 06 Aug 2026 23:19:14 -0400https://pop.com.sg/cannot-access-internet-through-ethernet-on-freshly-installed-ubuntu.htmlhttps://pop.com.sg/cannot-access-internet-through-ethernet-on-freshly-installed-ubuntu.htmlI just installed ubuntu 18.04 and cannot get access through internet through ethernet cable Here are the command I already tried to get an idea about the problem. Is enp0s25 the name of the ethernet ...Thu, 06 Aug 2026 22:48:46 -0400https://pop.com.sg/how-to-network-two-ubuntu-computers-using-ethernet-without-a-router.htmlhttps://pop.com.sg/how-to-network-two-ubuntu-computers-using-ethernet-without-a-router.htmlHow can I network two Ubuntu computers, so that they can "see" each other at an IP address?...Thu, 06 Aug 2026 22:43:27 -0400https://pop.com.sg/why-is-thunderbird-mail-merge-changing-my-dates-to-text-ex-5-01-2020-b.htmlhttps://pop.com.sg/why-is-thunderbird-mail-merge-changing-my-dates-to-text-ex-5-01-2020-b.htmlI have a merge variable {{Suspense Date}} along with other variable column headings in a CSV spreadsheet (originally an Excel document saved as .csv so I can use it in Thunderbird Mail-Merge). As ......Thu, 06 Aug 2026 22:43:03 -0400https://pop.com.sg/what-is-the-recommended-method-to-encrypt-the-home-directory-in-ubuntu.htmlhttps://pop.com.sg/what-is-the-recommended-method-to-encrypt-the-home-directory-in-ubuntu.htmlInstalling Ubuntu to a new Notebook, I was surprised that I wasn't offered the option to encrypt the home directory any more. I found some vague information that Ubuntu dropped ecryptfs support a w......Thu, 06 Aug 2026 22:41:36 -0400https://pop.com.sg/ubuntu-20-04-can-039-t-persist-the-iptables-configuration.htmlhttps://pop.com.sg/ubuntu-20-04-can-039-t-persist-the-iptables-configuration.htmlI have been doing this in all previous Ubuntu editions without an issue, but something has changed in Ubuntu 20.04. sudo apt install iptables-persistent iptables -A INPUT -p tcp -m tcp --dport 443......Thu, 06 Aug 2026 22:40:37 -0400https://pop.com.sg/where-are-the-desktop-icon-files-stored.htmlhttps://pop.com.sg/where-are-the-desktop-icon-files-stored.htmlWhat system folder on Ubuntu 12.10 are the main menu .desktop icons stored at??? I am having trouble locating.......Thu, 06 Aug 2026 22:40:07 -0400https://pop.com.sg/don-039-t-see-apache-running-in-netstat.htmlhttps://pop.com.sg/don-039-t-see-apache-running-in-netstat.htmlI'm just playing with apache and i got it to work, that is i can connect to server by browsing to http://127.0.0.1 and http://192.168.1.5 i'm NOT running IPv6 Yet this is the result of netstat $ ......Thu, 06 Aug 2026 22:39:16 -0400https://pop.com.sg/vpn-services-for-ubuntu-in-china.htmlhttps://pop.com.sg/vpn-services-for-ubuntu-in-china.htmlI'm a student in China and I have recently installed Ubuntu on my PC, but I'm having trouble trying to find a VPN for Linux. The Tor browser is way too slow (doesn't load at all, only displays titl......Thu, 06 Aug 2026 22:37:59 -0400https://pop.com.sg/can-039-t-install-chrome-on-ubuntu-18-duplicate.htmlhttps://pop.com.sg/can-039-t-install-chrome-on-ubuntu-18-duplicate.htmlWhen I tried to install a current version of a software, someone provided the URL for where the binaries are located so that it can be used with the command below. curl -silent -location https://b......Thu, 06 Aug 2026 22:35:17 -0400https://pop.com.sg/how-to-connect-with-minicom-to-a-cisco-switch-and-a-serial-to-rj-45-ad.htmlhttps://pop.com.sg/how-to-connect-with-minicom-to-a-cisco-switch-and-a-serial-to-rj-45-ad.htmlI just recently set up my CISCO switch. I'm trying to connect with minicom. I looked at several tutorials online of how to do this. I tried the tutorials on YouTube but the problem is they assume I......Thu, 06 Aug 2026 22:23:56 -0400https://pop.com.sg/user-bent-cardan-ask-ubuntu.htmlhttps://pop.com.sg/user-bent-cardan-ask-ubuntu.htmlQ&A for Ubuntu users and developers...Thu, 06 Aug 2026 22:23:05 -0400https://pop.com.sg/how-to-remove-rstudio-server-1-0-143-amd64-deb-in-ubuntu-16-04-linux-m.htmlhttps://pop.com.sg/how-to-remove-rstudio-server-1-0-143-amd64-deb-in-ubuntu-16-04-linux-m.html$ sudo apt-get remove rstudio-server-1.0.143-amd64.deb Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package rstudio-server-1.0.143-a......Thu, 06 Aug 2026 22:14:10 -0400https://pop.com.sg/how-to-map-keyboard-keys-to-joystick-buttons-using-joy2key.htmlhttps://pop.com.sg/how-to-map-keyboard-keys-to-joystick-buttons-using-joy2key.htmlThere isn't much documentation on the game I'm playing using WINE, and it doesn't detect a joystick. I want to use joy2key to map keyboard keys to joystick buttons, but can't figure out exactly how......Thu, 06 Aug 2026 22:13:59 -0400https://pop.com.sg/which-android-emulators-or-android-virtual-machines-run-well-on-ubuntu.htmlhttps://pop.com.sg/which-android-emulators-or-android-virtual-machines-run-well-on-ubuntu.htmlBlueStacks is a really easy-to-use (and freeware, apparently) Android emulator that runs well on Windows or Mac, but isn't made for Linux. I was able to get it to run in Ubuntu here by running it i......Thu, 06 Aug 2026 22:09:47 -0400https://pop.com.sg/crontab-script-not-working.htmlhttps://pop.com.sg/crontab-script-not-working.htmlBelow is my job.sh File echo 'Job Started Running' echo 'password' | sudo ./logstash -f /usr/share/logstash/bin/contact-index-logstash.conf echo 'Job Ended' Below is my sudo crontab -e * * * ......Thu, 06 Aug 2026 22:09:43 -0400https://pop.com.sg/when-is-cuda-gonna-be-released-for-ubuntu-20-04.htmlhttps://pop.com.sg/when-is-cuda-gonna-be-released-for-ubuntu-20-04.htmlSo 20.04 got released two days ago, but when is CUDA for 20.04 gonna be released? Is Nvidia usually following up quickly?...Thu, 06 Aug 2026 22:06:47 -0400https://pop.com.sg/zip-multiple-folders-into-a-zip-file-using-terminal-duplicate.htmlhttps://pop.com.sg/zip-multiple-folders-into-a-zip-file-using-terminal-duplicate.htmlI wish to store a few folders in a zip file and then convert that zip file into a jar. I have the following folders : META-INF and org. I tried the following command: zip META-INF/ org/ wordcoun......Thu, 06 Aug 2026 22:01:50 -0400https://pop.com.sg/postgresql-server-doesn-039-t-start.htmlhttps://pop.com.sg/postgresql-server-doesn-039-t-start.html[Ubuntu 16.04] I installed postgresql 9.5 along with dependencies: sudo sh -c "echo 'deb http://apt.postgresql.org/pub/repos/apt/ xenial-pgdg main' > /etc/apt/sources.list.d/pgdg.list" wget --q......Thu, 06 Aug 2026 21:50:39 -0400https://pop.com.sg/nginx-different-name-for-different-port.htmlhttps://pop.com.sg/nginx-different-name-for-different-port.htmlI have two web applications (webapp1 port 7000 & webapp2 port 8000) for internal use hosted on my server VM with IP address 192.168.15.10 (ubuntu 20.04) I want to see if it is possible to assign ...Thu, 06 Aug 2026 21:49:18 -0400https://pop.com.sg/python-permission-denied-writing-output-to-file.htmlhttps://pop.com.sg/python-permission-denied-writing-output-to-file.htmlI want to execute a python file in /var/www/html: sudo python myFile.py Which works fine. Now, I want to write the output to log.txt. So, I type: sudo python myFile.py >> log.txt Howeve......Thu, 06 Aug 2026 21:42:54 -0400https://pop.com.sg/how-to-open-password-change-dialog-from-gnome-control-center-from-the-.htmlhttps://pop.com.sg/how-to-open-password-change-dialog-from-gnome-control-center-from-the-.htmlI can open the User sections by running gnome-control-center but I need to access directly the password dialog box. Is there a way to directly open it?...Thu, 06 Aug 2026 21:42:22 -0400https://pop.com.sg/i-want-to-remove-3-28-tar-bz2-file-and-install-3-30-tar-bz2-file-how-c.htmlhttps://pop.com.sg/i-want-to-remove-3-28-tar-bz2-file-and-install-3-30-tar-bz2-file-how-c.htmlI am using Ubuntu WSL on windows 10 latest version and maybe I installed an older version of tar.bz2 file by using the command: wget https://www.nsnam.org/release/ns-allinone-3.28.tar.bz2 tar xvjf ns-...Thu, 06 Aug 2026 21:29:14 -0400