The following article describes the basic syntax and includes a simple example of the BASHCASEstatement usage. TheCASEstatement is the simplest form of theIF-THEN-ELSEstatement in BASH. You may use theCASEstatement if you need theIF-THEN-ELSEstatement with manyELIFelements. With the BASHCASEstat...
Case statement is not a loop, it doesn’t execute a block of code for n number of times. Instead, bash shell checks the condition, and controls the flow of the program. In this article let us review the bash case command with 5 practical examples. The case construct in bash shell allo...
if[expression];thenwill execute onlyifexpression istrueelsewill executeifexpression isfalsefi 有时,如果条件变得混乱,所以你可以使用相同的条件case statements。 caseexpressioninpattern1 ) statements ;; pattern2 ) statements ;; ...esac Expression Examples: statement1 && statement2# 两边的条件都为truesta...
if[expression];thenwill execute onlyifexpression istrueelsewill executeifexpression isfalsefi 有时,如果条件变得混乱,所以你可以使用相同的条件case statements。 caseexpressioninpattern1 ) statements ;; pattern2 ) statements ;; ...esac Expression Examples: statement1 && statement2# 两边的条件都为truesta...
NOTE:Every bash shell script in this tutorial starts withshebang:"#!"which is not read as a comment. First line is also a place where you put your interpreter which is in this case: /bin/bash. Here is our first bash shell script example: ...
In this example, the script first checks if ‘a’ is greater than ‘b’. If it’s not, it moves on to the ‘elif’ statement to check if ‘a’ is greater than ‘c’. If neither condition is met, it executes the ‘else’ statement, which in this case, prints ‘a is not greate...
TheLinux shellenables dynamic matching, so the Bash case patterns can be flexible. The following example shows how to use thecasestatement to check which character type the user has entered. Follow the steps below: 1. Create the script: ...
Bash conditional statements perform different computations or actions depending on whether a programmer-specified boolean condition evaluates to true or false. These statements are used to execute different parts of your shell program depending on whethe
Learn the syntax and use of the Bash declare statement with examples. Master variable declaration and attributes in Bash scripting.
Therefore,it’s important to always use the;;terminator after eachcaseoption code segment to avoid problems. 5. Advanced Use Cases Moreover,casestatements can be useful for handling complex condition logic inshell scripts: create amenu-driven program that enables users to choose from different opti...