Bash if else Statement | Bash Scripting - Else If Statement | Linux Shell If-Else Syntax Example

The if else statement in Bash is used to conditionally execute code based on the evaluation of an expression. The syntax of the if else statement is as follows: Bash if [ expression ]; then # code to execute if the expression is true else # code to execute if the expression is false fi Use code with caution. Learn more The expression can be any valid Bash expression, such as a comparison expression, a logical expression, or a test of a file or directory. If the expression evaluates to true, then the code in the then clause is executed. Otherwise, the code in the else clause is executed. Here is an example of a simple if else statement: Bash #!/bin/bash # Check if the file exists if [ -f myfile.txt ]; then # File exists, so print its contents cat myfile.txt