Bash random

bash-random.md

Bash random

Functions utils to play with random number.

Examples

Get randomly a number between 0 to 10 or 5.

if rand::boolean; then
  echo "$(rand::next 10)"
else
  echo "$(rand::next 5)"
fi

rand.sh

#/bin/bash
# Functions utils to play with random number

# Return a random number from 0 to bound (exclusive).
# BOUND
function rand::next () {
  echo $(( $RANDOM % $1 )) 
}

# Return randomly true or false (1/0).
function rand::boolean () {
  (( $RANDOM % 2 == 0 ))
}