Bash - break script when some command inside returns error

In this short article, we would like to show some concept that lets you break Bash script when some command inside returns error.

Assumption: in the below example as error, we understand status different than 0 returned from some program/command.

Practical example:

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#!/bin/bash

​

command_1 || exit 1

command_2 || exit 1

​

if ! command_3

then

    echo "Some error detected!";

    exit 1

fi

​

exit 0

Hint: for commands errors you can return different numbers than 1.