function. To actually return arbitrary values to the caller you must use other mechanisms. The simplest way to return a value from a bash function is to just set a global variable to the result. Sinceall variab -lesin bash are global by defaultthis is easy: functionmyfunc() { myresult='...
# syntax.sh# Declaring functions using the reserved word function# Multilinefunctionf1 {echoHello I\'m function 1 echo Bye! } # One line function f2 { echo Hello I\'mfunction2;echoBye!; }# Declaring functions without the function reserved word# Multilinef3() {echoHello I\'m function 3...
To actually return an arbitrary value from a function, we need to use other methods. The simplest option is to assign the result of the function to a global variable: ~/return_values.sh #!/bin/bashmy_function(){func_result="some result"}my_functionecho$func_result Copy some resultCopy ...
[cairui@cai shell]$ var=value [cairui@cai shell]$ echo $var value Variable.sh代码如下: #!/bin/bash fruit=apple count=5 echo "we have $count $fruit(s)" [cairui@cai shell]$ sh variable.sh we have 5 apple(s) Export命令就是用来设置环境变量: [cairui@cai shell]$ echo $PATH /applica...
Try the following bash script to demonstrate how function variables work in bash: 1. Create a script calledvariable.sh: vim variable.shCopy 2. Add the following code to the script: var1=1 var2=1 change() { echo Inside function
function F_NAME{ 函数体 } F_NAME() { 函数体 } 1. 2. 3. 4. 5. 6. 7. 函数的返回值: 函数的执行结果返回值:代码的输出 函数中的打印语句:echo,print 函数中调用的系统命令执行后返回的结果 执行状态返回值: 最后一次执行的命令状态结果 自定义函数执行状态的返回值:return [0-255] 注意:return与...
/bin/bash # 方法一:直接赋值 array1=("value1" "value2" "value3") # 方法二:使用索引赋值 array2[0]="value1" array2[1]="value2" array2[2]="value3" # 方法三:从字符串分割赋值 string="value4 value5 value6" array3=($string) # 方法四:使用read命令赋值 echo "Enter values separated...
While ShellCheck is mostly intended for interactive use, it can easily be added to builds or test suites. It makes canonical use of exit codes, so you can just add ashellcheckcommand as part of the process. For example, in a Makefile: ...
Inside the function: Declare local variables 'num1' and 'num2' to store the arguments passed to the function. Calculate the difference between 'num1' and 'num2' and store it in the difference variable. Use "echo" to output the value of 'difference'. ...
local VARIABLE=value 存活时间: 函数执行开始,至函数返回结束; function: 功能 把一段具有独立功能代码封装在一起,并给予命名;后续用到时,可直接通过给定函数名来调用整体代码; 函数作用: 代码重用; 模块化编程; 函数的使用方法: 先定义:编写函数代码