The following article describes the basic syntax and includes a simple example of the BASHCASEstatement usage. TheCASEstatement is the simplest form of theIF-THEN-ELSEstatement in BASH. You may use theCASEstatement if you need theIF-THEN-ELSEstatement with manyELIFelements. With the BASHCASEstat...
We have discussed already what a switch case, its syntax is. Now, we will see in detail how it will work in shell scripting. Initially, we initialize a variable with an expression or value and conditional statement checks whether it satisfies any condition, if yes then it will execute the ...
case语句:选择结构 case switch(变量值) in value1) statement … ;; value2 statement … ;; *) statement … ;; esac 例:输入随便输入一个字符判断字符类型。 1 #!/bin/bash 2 # 3 case $1 in 4 [0-9]) 5 echo “A Digit.” ;; 6 [a-z]) 7 echo “Lower.” ;; 8 [A-Z]) 9 ec...
Case statement is not a loop, it doesn’t execute a block of code for n number of times. Instead, bash shell checks the condition, and controls the flow of the program. In this article let us review the bash case command with 5 practical examples. The case construct in bash shell allo...
statement ;; esac 编写脚本,判断用户输入的字符串 #!/bin/bash # read -p "Enter string: " str case $str in linux|Linux) echo "windows." ;; windows|Windows) echo "linux." ;; *) echo "other." ;; esac 特殊变量: 位置变量 $1, $2 ,$3 ,$4 ... $9, ${10}, $1:...
Shell case esac 语句case ... esac 与其他语言中的 switch ... case 语句类似,是一种多分枝选择结构。case 语句匹配一个值或一个模式,如果匹配成功,执行相匹配的命令。case 语句格式如下:case 值in 模式1) command1 command2 command3 ;; 模式2) command1 command2 command3 ;; *) command1 command2 ...
Conditional statements help in deciding the proper execution path for operations. Unix/Linux Shell supports two conditional statements: The if...else statement The case...esac statement Control statements are used to indicate how the control is transferred during the program execution....
JavaScript Tutorials - Herong's Tutorial Examples∟Flow Control Statements∟"switch ... case" Statement Example This section provides a JavaScript tutorial example showing how to write a 'switch ... case' statement.© 2025 Dr. Herong Yang. All rights reserved.To help you understand how "switch...
Now, let’s make the above script file executable using thechmodcommand and run it: $ chmod +x case_script.sh $ ./case_script.sh The color is green. The output shows thatgreenmatches the second pattern in thecasestatement, and the corresponding message is printed. ...
TheLinux shellenables dynamic matching, so the Bash case patterns can be flexible. The following example shows how to use thecasestatement to check which character type the user has entered. Follow the steps below: 1. Create the script: ...