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create and md5 sum of your password
create and md5 sum of your password without it showing up in your terminal or history. Afterwards we overwrite the $p variable (thx to bazzargh)

Kill all processes belonging to a single user.

Find total Terabytes written to a SSD
You must have smartmontools installed for this to work. This also assumes you 512 byte sector sizes, this is pretty standard.

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

Increment the filename of png in a given directory by one

validate xml in a shell script using xmllint

GZip all files in a directory separately
It gzip each file in a directory separately

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

get the top 10 longest filenames


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