Commands by vasudevram (1)

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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" }

convert a line to a space

Erase DVD RW

Recursively grep thorugh directory for string in file.
-R, -r, --recursive Read all files under each directory, recursively; this is equivalent to the -d recurse option.

Enable color pattern match highlighting in grep(1)
This will affect all invocations of grep, even when it is called from inside a script.

List the size (in human readable form) of all sub folders from the current location

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"

Pretty Print a simple csv in the command line
Splits the input based on commas and prints it in a nice column format. This would not work for CSV rows that have "," between quotes or with newline characters. Use only simple simple csv files.

list files recursively by size


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