Commands by coolman (1)

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Find wich ports you probably want to open in your firewall on a fresh installed machine

list files recursively by size

Find all files with colons and replace with underscores; current directory and below (recursive).

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" }

Undo mkdir -p new/directory/path
Removes all directories on given path, working from right to left, and stops when reaching a non-empty directory Counterpart of $ mkdir -p new/directory/path Shortcut (must be issues as next command immediately after mkdir): $ ^mk^rm ( see http://www.commandlinefu.com/commands/view/19/runs-previous-command-but-replacing )

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

reverse order of file

Find the package that installed a command

Copy recursivelly files of specific filetypes
Copying only wmv and mpg files recursively from to

Check your spelling
For when you need a quick spell check.

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