# Try to make a random temp directory # Build the intended directory name, with the last element a random integer # from 1..2^31 lim=$((2 << 31)) dn=${TMPDIR:-/tmp}/${1:-mktd}.$$.$(rndi 1 "$lim") # Create the directory and print its name if successful mkdir -m 700 -- "$dn" && printf '%s\n' "$dn"