Commands by zbeekman (3)

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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" }

Hide or show Desktop Icons on MacOS
Hides all Files and Folders on the MacOS Desktop. To show files and folders, type "true" instead of "false". "Finder" at the end is case sensitive, "finder" doesn’t work

Removing Prefix from File name
Removing Course name prefix added

recursive transform all contents of files to lowercase
In this way it doesn't have problems with filenames with spaces.

determine if tcp port is open
@putnamhill, no need if statement in that case. && is a AND and || is a OR

password generator
make password randomly, default 8 chars, using bash3.X only, no external program.

Google URL shortener
use curl and sed to shorten an url via goo.gl

Convert numbers to SI notation
converts any number on the 'stdin' to SI notation. My version limits to 3 digits of precious (working with 10% resistors).

rgrep: recursive grep without .svn
Only excludes .svn from filenames.

Change the ownership of all files owned by one user.
Finds all files in /home owned by UID 1056 and changes to 2056.


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