Commands using sed (1,319)

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list block devices
Shows all block devices in a tree with descruptions of what they are.

Open Sublime-text in current directory

Execute a command before display the bash prompt
For example, if you are the type who type ls very often, then $ PROMPT_COMMAND=ls will ls after every command you issue.

Sudoers: bypass all password prompts
If you as the sole user of a computer at home only don’t like needing to repeatedly type a password each time you run a command, using ‘NOPASSWD’ in sudoers for your specific username is for you.

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

lists files and folders in a folder
lists files and folders in a folder with summary.

Convert the output of one or more (log, source code ...) files into html,
Requires the "enscript" package. frank@zappa:~# sudo apt-get install enscript Or http://www.codento.com/people/mtr/genscript/ "use your head"

Display a cool clock on your terminal
This command displays a clock on your terminal which updates the time every second. Press Ctrl-C to exit. A couple of variants: A little bit bigger text: $ watch -t -n1 "date +%T|figlet -f big" You can try other figlet fonts, too. Big sideways characters: $ watch -n 1 -t '/usr/games/banner -w 30 $(date +%M:%S)' This requires a particular version of banner and a 40-line terminal or you can adjust the width ("30" here).

intersection between two files

Remove blank lines from a file using grep and save output to new file
The ^$ within the quotes is a regular expression: ^=beginning of line, $=end of line, with no characters between.


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