Commands using grep (1,935)

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Find ASCII files and extract IP addresses

A video capture command which can be assigned to a keyboard shortcut.
A video capture command which can be assigned to a keyboard shortcut.

Remove security limitations from PDF documents using ghostscript (for Windows)
#4345 also works under windows

Real time satellite wheather wallpaper
Changes the wallpaper to the last satellite image. Tha url above shows latin america. Seek the best url for your location Now I have a usefull background image in my desktop I use it inside kalarm updating every 15 minutes. May be done with 'watch' instead It s an option to xplanet ( kde ) and xearth needs xli , curl

Equivalent to ifconfig -a in HPUX
not shown ifconfig error

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

bash or tcsh redirect both to stdout and to a file
When plumbers use pipes, they sometimes need a T-joint. The Unix equivalent to this is 'tee'. The -a flag tells 'tee' to append to the file, rather than clobbering it. Tested on bash and tcsh.

Change Gnome wallpaper
You can use this in a script which rotates wallpapers from a directory at each login.

Quick command line math
expr will give you a quick way to do basic math from the CLI. Make sure you escape things like * and leave a space between operators and digits.

Find top 5 big files
zsh: list of files sorted by size, greater than 100mb, head the top 5. '**/*' is recursive, and the glob qualifiers provide '.' = regular file, 'L' size, which is followed by 'm' = 'megabyte', and finally '+100' = a value of 100


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