shell 编程（一)

shell
Word count: 63   |   Reading time≈ 1 min

变量跟引用

shell 的执行方式(三种)

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//shell 解释器执行
> /bin/bash a.sh

// 赋给文件执行权限  直接执行
>chmod +x ./a.sh
> ./a.sh

//source命令执行 在当前的bash 进程执行
> source ./a.sh

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