Bash cannot return values, whether a single value or an array, but it can return a status (the same as other programs). However, there are multiple turnarounds that we can use to return an array from a function.
这是一个Linux shell的问题。 就bash而言, return命令只能用在函数中，不能直接用在脚本中（不能直接用在脚本终端），当脚本用source a1.sh（或者 . a1.sh）执行时，可以用在脚本中。（ return: can only`return' from a function or sourced script）下面的内容，摘自<<实用Linux Shell编程>>...
#!/bin/bash if [ $# -ne 1 ] then echo "please input parameter" return 1 fi 上面的脚本如果直接执行则会报如下错误: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 return: can only`return' from a function or sourced script 但是如果使用 . 或 souce的方式被包含到父Shell中,则可以正常运...
TinCanTechchanged the titlebashism:bash: return: can onlyreturn' from a function or sourced script`Jul 11, 2023 TinCanTechself-assigned thisJul 11, 2023 TinCanTechadded thePOSIXlabelJul 11, 2023 TinCanTechchanged the titlebashism: bash: return: can only `return' from a function or sourced...
my_function() { # Some commands return 0 # Correct usage within a function } 使用source命令引入脚本:如果你需要在脚本中使用return命令,并确保其能正常工作,应该通过source命令引入该脚本,而不是直接执行它。例如: bash source /path/to/your/script.sh 检查.bashrc的调用方式:确保.bashrc文件是通过登录...
#!/bin/bash dir=/root/shell grep -e '^ .*cp ' -e '^cp' $dir/* >Cp_Check.txt if [ ! -s Cp_Check.txt ] then return 0 fi #直接执行脚本是会报错的,return仅用于函数中: #return: can only`return' from a function or sourced script 总结return 与 exit的区别 1、exit用于在程序运...
The process inherits the stdin, stdout, and stderr from... Bash - Builtin Commands builtin refers to: a builtin command. See or to the specific builtin command. See (useful when defining a function whose name is the same as a shell builtin) The builtin command execute the specified...
Return和Break语句在编程中都是用于控制循环语句的执行,但它们的作用和用法有所不同。 Return语句用于在循环中返回一个值或值集,它将控制权从当前位置返回到循环的起始位置。Return语句通常用于在循环中返回一个计算结果或一个迭代器,例如在列表推导式或生成器表达式中。 Break语句用于在循环中中断循环,它将控制权从...
unset my_functionCopy The function is no longer available in the current terminal session. However, if the code is in the~/.bashrcfile, everything is restored to normal in the next session. Bash Function Variables The variables in bash are global by default and accessible from anywhere, inclu...
Using functions in bash scripting comes with two benefits: 1. A function is read directly into the shell's memory and stored for later use. Since computer memory is not an issue nowadays, using functions is faster than repeating code. ...