When trying to understand the working of a function like if-else in a shell script, it is good to start things simple. Here, we initialize two variables a and b, then use the if-else function to check if the two variables are equal. The bash script should look as follows for this t...
'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...
Explanation:In the above example, two conditions (first and last) are getting satisfied so two blocks are executed. But according to programming standard multiple If statements are not recommended as it takes more execution time. Instead, we can use If / elseif / else block. 2. Nested If s...
The function of if-else in shell script is an important asset for shell programmers. It is the best tool to use when you need to execute a set of statements based on pre-defined conditions. The if-else block is one, if not the most essential part of conditional programming. By regulatin...
/bin/bash word=a if [[ $word == "b" ]] then echo "condition b is true" elif [[ $word == "a" ]] then echo "condition a is true" else echo "condition is false" fi bash Shell Useful tools for Programmers VideoToGifs.com ...
Python - if, elif, else Conditions By default, statements in the script are executed sequentially from the first to the last. If the processing logic requires so, the sequential flow can be altered in two ways: Python uses the if keyword to implement decision control. Python's syntax for ...
In this tutorial, we will learn how to declare, and use if/else and switch statements in PowerShell, along with several examples for a clear understanding. Initial considerations A very basic knowledge of coding in any other programming language will be assumed. ...
这样子的其实还好(但不够优雅),有的业务代码更是嵌套了4层if else ,这样让人阅读起来很困难,看起来不够优雅。2.解决方案2.1 尽早返回又称卫语句,即Guard StatementWikiPedia: In computer programming, aguardis abooleanexpressionthat must evaluate to true if the program execution is to continue in the ...
What is python 3 else if? In real life, there is a situation where we are required to complete a given task and must select what to do next based on a set of circumstances. In programming, there are times when a task must be completed only if a certain condition is true. ...
Let's review the 5 words in this group that I mentioned earlier. $ type if; type then; type else; type elif; type fi if is a shell keyword then is a shell keyword else is a shell keyword elif is a shell keyword fi is a shell keyword ...