如何在shell/bash脚本中更改argv [0]的值? [英] How to change argv[0] value in shell / bash script?

问题描述

set命令可用于更改位置参数$ 1 $ 2的值...

The set command can be used to change values of the positional arguments $1 $2 ...

但是，有什么方法可以更改$ 0吗?

But, is there any way to change $0 ?

推荐答案

#! /bin/sh
# try executing this script with several arguments to see the effect

test ".$INNERCALL" = .YES || {
    export INNERCALL=YES
    # this method works both for shell and bash interpreters
    sh -c ". '$0'" argv0new "$@"
    exit $?
}

printf "argv[0]=$0\n"
i=1 ; for arg in "$@" ; do printf "argv[$i]=$arg\n" ; i=`expr $i + 1` ; done

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