There are services that can be enabled/disabled using the GUI (like the startup application) or the terminal. For the Terminal you have several options. First, open a terminal (Type “terminal” in the …
How to enable or disable services in Ubuntu? Learn MoreSample query: When I run sudo the terminal is stuck for a few seconds and then outputs an error message. My terminal looks like this: What can I do to solve it? …
Error message “sudo: unable to resolve host (none)” Learn MoreSample query: I want to ssh or bash into a running docker container. Please, see example: Now I want to get something like this (go into the running container): $ …
How to get bash or ssh into a running container in background mode? Learn MoreYou just need to do apt-get install –only-upgrade <packagename>. This will upgrade only that single package, and only if it is installed. If you wish to install the package if it …
How to upgrade a specific package using apt-get? Learn MoreJust press Ctrl+Alt+T on your keyboard to open Terminal. When it opens, run the command(s) below: OR You can also use awk: How to list, add, modify, and delete users using terminal? …
How to list, add, modify, and delete users using terminal? Learn MoreOn a default installation the cron jobs get logged to You can see just cron jobs in that logfile by running If you haven’t reconfigured anything,the entries will be in …
Where is the cron/crontab log? Learn MoreIn this article, we’ll learn how to use docker without sudo. If you want short answers, jump to the next answer below. Good news: the new docker (version 19.03 (currently …
How to use docker without sudo? Learn MoreThe command du “summarizes disk usage of each FILE, recursively for directories,” e.g., -h is to get the numbers “human readable”, e.g. get 140M instead of 143260 (size in KBytes) -s is for summary (otherwise you’ll get not …
How to determine the total size of a directory from the terminal? Learn MoreHere are multiple solutions to resolve this issue, but if the first 2 don’t work out, jump to the 5th answer. Remove your /var/lib/dpkg/lock file and force package reconfiguration. It should work …
Unable to lock the administration directory (/var/lib/dpkg/) is another process using it? Learn MoreIn this article, we’ll learn how to save the output from the terminal to a file. The first question is, is it possible? Yes it is possible, just redirect the …
How to save the terminal output to a file? Learn MoreAccording to an article on debian-administration.org, If the dependencies have changed on one of the packages you have installed so that a new package must be installed to perform the upgrade …
“The following packages have been kept back:” How to solve it in Linux? Learn MorePackages are manually installed via the dpkg command (Debian Package Management System). dpkg is the backend to commands like apt-get and aptitude, which in turn are the backend for GUI install apps like the Software Center and Synaptic. Something …
How to install a .deb file using the command line? Learn MoreThere are a number of options: 1). Use the –remove flag, similar to how the PPA was added: 2). You can also remove PPAs by deleting the .list files from /etc/apt/sources.list.d directory. 3). As a safer …
How to remove PPAs in Linux? Learn MoreA zip file can be unzipped using the unzip command from the terminal. If the unzip command isn’t already installed on your system, then run: After installing the unzip utility, if you …
How to unzip a zip file from the Terminal? Learn MoreTo list all packages intentionally installed (not as dependencies) by apt commands, run the following : This provides a reverse time based view, with older commands listed first: Installation data also showing …
How to list all installed packages in Linux? Learn MoreThe option you’re looking for is -R. If destination doesn’t exist, it will be created. -R means copy directories recursively. You can also use -r since it’s case-insensitive. To copy everything inside the source folder (symlinks, hidden files) without …
How to copy a folder with files to another folder in Linux? Learn MoreConsidering that pdfunite is part of poppler it has a higher chance to be installed, usage is also simpler than pdftk: Just make sure you remember to provide out.pdf, or else it will overwrite the last …
How to merge multiple PDF files into one PDF in Linux? Learn More