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commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

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validate xml in a shell script using xmllint

Clone all repos from a user with lynx
https://wuseman.github.io/wcloner/

Generate random valid mac addresses
Ruby version. Also, a perl version: $perl -e 'printf("%.2x.",rand(255))for(1..5);printf("%.2x\n",rand(255))'

Matrix Style
Solves "tr" issues with non C-locales under BSD-like systems (like OS X)

Filter out all blank or commented (starting with #) lines

Find your graphics chipset
Displays only the VGA adapter/chipset being used for the graphics. In this case, it gave me the "M22" and "Mobility Radeon x300" that I needed to research a graphics issue I was having.

Convert seconds to [DD:][HH:]MM:SS
Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

Search for commands from the command line
Search at CommandLineFu.com from your terminal. Get the clfu-seach at http://www.colivre.coop.br/Aurium/CLFUSearch

Convert "man page" to text file
You can convert any UNIX man page to .txt

Get information about a video file


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