Generate pseudo-random string of n characters.

prsg

#!/usr/bin/env bash

###
### prsg: Generate pseudo-random string of n characters.
###

if [[ $# -eq 0 ]]; then
	printf 'Usage: prsg LENGTH\n'

	exit 1
fi

LENGTH="$1"
REGEX='^[0-9]+$'

if ! [[ $LENGTH =~ $REGEX ]]; then
	printf 'Argument must be an integer\n\nUsage: prsg LENGTH\n'

	exit 1
fi

LC_CTYPE=C tr -dc A-Za-z0-9_\!\@\#\$\%\^\&\*\(\)-+= < /dev/urandom | head -c $LENGTH | xargs ;