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Count the frequency of every word for a given file
Counts the frequency of words in a file

Sort contents of a directory with human readable output
Show sizes of all files and directories in a directory in size order. $du -hs * | sort -hr for reverse order. Taken from http://serverfault.com/questions/62411/how-can-i-sort-du-h-output-by-size

archive all files containing local changes (svn)
This works more reliable for me ("cut -c 8-" had one more space, so it did not work)

Convert text to picture
generates a picture file with the text. Some other samples in: http://www.imagemagick.org/Usage/text/

Find the package that installed a command

Remove today's Debian installed packages
Adapted using your usefull comments !

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" }

Rename files in batch

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

attach to bash shell in the last container you started


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