Shell by Example: Random Numbers

Shell by Example: Random Numbers Bash

Bash Random numbers can be generated using the `$RANDOM` variable. This is not cryptographically secure, but it is fast and easy to use. To generate a cryptographically secure random number, use `/dev/urandom`. $RANDOM - Bash built-in (0 to 32767):	Edit `#!/bin/bash echo "Bash \$RANDOM: $RANDOM" echo "Another: $RANDOM" echo "Range 1-100: $((RANDOM % 100 + 1))"`
	Output: Bash $RANDOM: 579 Another: 32207 Range 1-100: 93

Bash Random selection from array:	Edit `#!/bin/bash fruits=("apple" "banana" "cherry" "date" "elderberry") random_index=$((RANDOM % ${#fruits[@]})) echo "Random fruit: ${fruits[$random_index]}"`
	Output: Random fruit: elderberry