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How to use && in an IF statement in bash

Here you will find out:

  • what IF statements and their syntax are
  • how to use && in an IF statement
  • what the behavior of && in a shell script is
  • when DiskInternals can help you

Are you ready? Let's read!

IF statements and their syntax

IF statements are used in making decisions in bash scripting. When an IF statement is introduced in a bash script, it is intended to check for certain conditions before running different commands in the script. Also, with IF statements and loops, it is much easier to write intricate scripts that run smoothly.

The syntax of an IF statement is easy to understand: it triggers specific commands after a previous test/command has returned a “return code”.

Example

Explanation

Any command written between “then” and “fi” will only run/execute if the “tests” identified above (in the first line) return as “True”.

Using && in an IF statement in bash

When creating complex or multi-conditional tests, that's when to use these Boolean operators. That is to say, if you're writing a bash script where two or more tests will have to return "True", then you have to use &&. Using && in an IF statement when writing a bash script will mean that all conditions/tests must return "True" before your command runs.

Example

Explanation

The above script will print "I" two times if the first condition is "g" or the second "h"

The behavior of && in a shell script

It is important to note that && is used not only for checking for tests/conditions, but also to run two or more commands. Thus, the commands after && will only run if the commands before && return as "True".

Example

Explanation:

The script above contains two commands; the second command is written after &&. Hence, it will only run if the first command returns as “True”.

Example of using && in shell script with an IF command

You can use the && operator in ann IF statement, as in the examples below:

Example 1:

Example 2:

Example 3:

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