If-elif-else Statement 在bash 脚本中,如果希望使用 if 语句应用多个条件,则使用 if elif else。在这种类型的条件语句中,如果满足第一个条件,则执行下面的代码,否则检查下一个 if 条件,如果不匹配,则执行下面的 else 语句中提到的命令。其语法和示例如下所示。 Syntax : if [ condition_command ] then comman...
Use if else statement Now I add an else statement in the previous script. This way when you get a non-zero modulus (as odd numbers are not divided by 2), it will enter the else block. #!/bin/bash read -p "Enter the number: " num mod=$(($num%2)) if [ $mod -eq 0 ]; t...
To understand if-else in shell scripts, we need to break down the working of the conditional function. Let us have a look at the syntax of the if-else condition block. if [condition] then statement1 else statement2 fi Copy Here we have four keywords, namely if, then, else and fi....
'Else if'in bash scripting, often written as'elif', is used to check multiple conditions in your code. It is used with the syntax,if [firstStatement]; then... elif [secondCondition]; then... else. It’s a powerful tool that allows your scripts to make decisions based on various scen...
如果有两个分支，就可以使用 if else 语句，它的格式为：ifconditionthenstatement1elsestatement2fi 如果...
> - is greater than, in ASCII alphabetical order - if [[ "$a" > "$b" ]] -z - string is null, that is, has zero length Examples: [ s1 = s2 ] (true if s1 same as s2, else false) [ s1 != s2 ] (true if s1 not same as s2, else false) ...
An alternative to if-else statements in shell scripting is the case statement. The case statement allows you to match a value against multiple patterns and execute different blocks of code based on the match. Here’s an example: case$varin1)echo"Variable is 1.";;2)echo"Variable is 2."...
Actually,we can even skip theif–elsestructure, instead opting for the so-called ternary statement: [ TEST_COMMAND ] && ( THEN_EXPRESSIONS ) || ( ELSE_EXPRESSIONS ) Here, based on the result ofTEST_COMMAND, the script either executes theTHEN_EXPRESSIONSorELSE_EXPRESSIONS. ...
In this guide, we will explain how to use if statement in bash scripting. In bash shell scripting, If statement can be used in form of if, if-else, If-elif-else, netsted if and case. Bash scripting is a powerful tool for automating tasks in the Linux environment. One of the key ...
How to work of if else condition in shell scripting? Interactive Usage of CSH If Statements Question: My Solaris 10 csh implementation of the "if" statement seems suspicious or I may not have a clear understanding of it. The latter is likely considering my situation. ...