randstr.sh (raw) (369B)
1 #!/bin/sh 2 # randstr 3 # description: generate a random string of size $1 (default: 10) 4 # e.g.$ randstr 10 5 6 if [ "$1" = "-h" ] || [ "$1" = "--help" ]; then 7 echo "Usage: randstr [SIZE]" 8 echo "" 9 echo "print a random string of SIZE length (default: 10)" 10 exit 11 fi 12 13 len=10 14 if [ $1 ]; then len=$1; fi 15 16 echo $(cat /dev/urandom | tr -dc "a-zA-Z0-9" | fold -w $len | head -n 1)