Commands using sed (1,319)

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Target a specific column for pattern substitution
Awk replaces every instance of foo with bar in the 5th column only.

prints line numbers

Capture data in ASCII. 1500 bytes
Sniffing traffic on port 80 only the first 1500 bytes

va - alias for editing aliases
When setting up a new aliases file, or having creating a new file.. About every time after editing an aliases file, I source it. This alias makes editing alias a bit easier and they are useful right away. Note if the source failed, it will not echo "aliases sourced". Sub in vi for your favorite editor, or alter for ksh, sh, etc.

Find the package that installed a command

Reverse ssh
Both hosts must be running ssh and also the outside host must have a port forwarded to port 22.

Generic shell function for modifying files in-place
Some commands (such as sed and perl) have options to support in-place editing of files, but many commands do not. This shell function enables any command to change files in place. See the sample output for many examples. The function uses plain sh syntax and works with any POSIX shell or derivative, including zsh and bash.

Prints any IP out of a file

List files with quotes around each filename

Find usb device in realtime
Using this command you can track a moment when usb device was attached.


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