ShellScriptif...else

2017年5月30日 — if test $[2*3] -eq $[1+5]; then echo 'The two numbers are equal!'; fi;. if ... else 语句也经常与test 命令结合使用，如下所示：. num1=$[2*3]. num2 ...

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2019年3月27日 — if [ $STR1 == $STR2 ]; then echo Yes else echo No fi. 範例1-3：if, else if, else 寫法. Shell Script if 的多重條件寫法，範例如下：. if- ...

2022年8月3日 — We use if-else in shell scripts when we wish to evaluate a condition, then decide to execute one set between two or more sets of statements ...

2022年11月14日 — Let's see an example where we want to find if the first number is greater or smaller than the second one. Here, if [ $a -lt $b ] evaluates to ...

2016年12月27日 — Shell Script if / else 條件判斷式 · $1 = 123 ]. then. echo var is 123. fi. if / else 寫法： · 7. 8. #!/bin/sh. if [ $1 = 123 ]. then.

A short explanation of the example: first we check if the file somefile is readable (if [ -r somefile ]). If so, we read it into a variable. If not, we check ...

2023年6月30日 — The if-else statement is a robust control structure in shell scripting that allows you to make decisions and run different blocks of code ...

The if...else...fi statement is the next form of control statement that allows Shell to execute statements in a controlled way and make the right choice.

This code is just a series of if statements, where each if is part of the else clause of the previous statement. Here statement(s) are executed based on the ...