Commands by rubo77 (8)

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Sum columns from CSV column $COL

List docker volumes by container

Detect encoding of a text file
This command gives you the charset of a text file, which would be handy if you have no idea of the encoding.

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" }

Get the IP address of a machine. Just the IP, no junk.
Why use many different utilities all piped together, when you only need two?

disable caps lock
a quick one-line way to disable caps lock while running X.

Convert a date to timestamp
Simple way to get a timestamp from a date

How long has this disk been powered on

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"

Empty a file


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