if then example bash

Example 1: bash if

#!/bin/bash

foo="qux"
bar="qux"

if [ "$foo" = "$bar" ]; then
    echo "The strings are equal."
else
    echo "The strings aren't equal."
fi

Example 2: bash else if

if [ "$animal" == "penguin" ]; then
  echo "Hmmmmmm fish... Tux happy!"
elif [ "$animal" == "dolphin" ]; then
  echo "Pweetpeettreetppeterdepweet!"
else
  echo "*prrrrrrrt*"
fi

if TEST-COMMANDS; then
  CONSEQUENT-COMMANDS;
elif MORE-TEST-COMMANDS; then
  MORE-CONSEQUENT-COMMANDS;
else
  ALTERNATE-CONSEQUENT-COMMANDS;
fi

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