if-statement-bash-scripting-example Nested if Statement If 语句和 else 语句可以嵌套在 bash 脚本中。关键字 fi 显示了内部 if 语句的结束,所有 if 语句都应该以关键字 fi 结束。 Syntax : if [ condition_command ] then command1 command2 …….. last_command else if [ condition_command2 ] then c...
if-statement-bash-scripting-example Nested if Statement If 语句和 else 语句可以嵌套在 bash 脚本中。
以下是一些Bash 4+示例: 示例1,在字符串中检查是否存在'yes'(不区分大小写): if [[ "${str,,}" == *"yes"* ]] ;then 示例2,检查字符串中是否包含“yes”(不区分大小写): if [[ "$(echo "$str" | tr '[:upper:]' '[:lower:]')" == *"yes"* ]] ;then 示例三,检查字符串中是...
'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...
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，...
In Bash scripting, the exit status of a command or script is an important piece of information that can determine the success or failure of a script or a particular command. A command or script’s exit status, which is a numeric value, shows whether it was successful or encountered an err...
if语法[Linux(bash_shell)] http://blog.csdn.net/ycl810921/article/details/4988778 1: 定义变量时, =号的两边不可以留空格. eg: gender=femal---right gender =femal---wrong gender= femal---wrong 2 条件测试语句 [ 符号的两边都要留空格.
Conditions in bash scripting (if statements) - Linux Academy Blog https://linuxacademy.com/blog/linux/conditions-in-bash-scripting-if-statements/ Table of conditions The following table list the condition possibilities for both the single- and the double-bracket syntax. Save a single exception, th...
Example 7: If Else Statement in Bash Scripting We will now demonstrate theELSEcondition. TheELSEcondition is used in the case where theIFcondition or all theELIFconditions do not exist then theELSEcondition will be used and the code in theELSEcondition will be executed. Let’s add an example...
If this, then that else something else. Doesn't make sense? It will after you learn about the if-else statements in bash shell scripting. Bash supports if-else statements so that you can use logical reasoning in your shell scripts.