Bash, short for "Bourne Again SHell," is a powerful scripting language used in Unix-based operating systems. One of the fundamental constructs in Bash programming is the if statement. The if statement allows you to control the flow of your script based on specific conditions. In this article,...
'Else if'in bash scripting, often written as'elif', is used to check multiple conditions in your code. It is used with the syntax,if [firstStatement]; then... elif [secondCondition]; then... else. It’s a powerful tool that allows your scripts to make decisions based on various scen...
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问如何在bash脚本中使用if语句EN#前言：在生产工作中if条件语句是最常使用的，如使用来判断服务状态，...
If statement in Bash We can also implementifstatements for additional functions. #!/bin/bash echo “Who is there?” read name if [ $name ] echo “Hello $name” else echo “Must’ve been my imagination” fi In the terminal: ~$bash name.sh ...
9.1. Simple Bash if/else statement Please note the spacing inside the [ and ] brackets! Without the spaces, it won't work! #!/bin/bash directory="./BashScripting" # bash check if directory exists if [ -d $directory ]; then
For example, if I had an 'apple', I would want to make sure it's still an 'apple' and not an 'orange' because I don't like Oranges! The syntax for an if statement is if [something] then elif then elif then ...etc... else fi The else if statement or (elif) is not...
#A function to return an echo statement. helloFunc() { echo "Hello from a function." echo $1 echo $2 echo "You gave me $# arguments" } #invoke the function helloFunc() helloFunc "How is the weather?" Fine 输出如下: Hello from a function. ...
the if statement, else, elif, etc. The exit status of a bash script is represented by a number: "0" means the script executed successfully, and any other number besides “0” means there was a failure. It is important that you know and understand all these aspects of bash scripting. ...
If you use two command line arguments, $2 will be the second argument. How to perform conditional tests in Bash Scripting? Conditional tests can be performed in Bash Scripting using the "if" statement, where the statement inside the "if" block is executed only if the specified condition is...