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

Search some text from all files inside a directory

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

Find the package that installed a command

Detach a process from the current shell
Continue to execute the command in background even though quitting the shell.

Find top 10 largest files in /var directory (subdirectories and hidden files included )
Same as above, but modified to show human readable output

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" }

Find passwords that has been stored as plain text in NetworkManager

copy last command to clipboard
Copy the last command to clipboard (os x)

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


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