Firstly, your ls is probably aliased to something. Check it with: 1alias ls If the prompt shows some alias, then start by removing it: 1unalias ls Now we can begin. Check the most recently modified file: 1ls -t Reverse this with tac to see the file which has been unmodified the longest: 1ls -t | tac Group files by …

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Processes See running items in current terminal with 1ps or more with 1ps -a Or the entire system with 1ps -e Or the entire system with more information, BSD style, with: 1ps aux And then search for a particular program with 1ps aux | grep cmus Jobs Pause a job with ^z. Put it in the background with the '&' suffix. …

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A soft link is a file which says how to go to another file. When a program encounters a soft link, it will make a guess at whether it should ignore it, or try to get to that file. To make a soft link to a file in the current directory, linking is easy: 1fortune > $file_1 2ln -s $file_1 $link_1 Now imagine your …

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The tree utility outputs a full listing of everything in your current directory, and those below. Just directories: tree -d Output colour to less: tree -C --info | less -re Ignore files in the .gitignore file: tree --gitignore You can place information about the files in a directory to use with the tree --info option, …

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Basic Information Let's get some entries with 'getent', e.g. passwd or group. 1getent passwd 1getent group Obviously: 1getent shadow Examples 1sudo adduser maestro add user 'maestro' This depends upon the settings in the /etc/default/useradd file and /etc/login.defs 1sudo useradd -m pinkie add user 'pinkie' with a home …

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The Best Linux Program: yes The program yes prints the word yes to your terminal until you cancel it, perhaps with 'Control + c'. Or technically it prints yes\n, meaning yes and then a new line (like pressing the Return key). This is extremely powerful. If you ever want to automatically install something which …

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