我正在编写一个调用另一个脚本的非常简单的脚本,我需要将参数从当前脚本传播到我正在执行的脚本。

例如,我的脚本名为foo.sh,调用bar.sh。

foo.sh:

bar $1 $2 $3 $4

如何在不显式指定每个参数的情况下做到这一点?


当前回答

使用“$@”(适用于所有POSIX兼容程序)。

[…), bash提供了“$@”变量,它扩展为所有用空格分隔的命令行参数。

以Bash为例。

其他回答

bash和其他类似bourne的炮弹:

bar "$@"

使用“$@”(适用于所有POSIX兼容程序)。

[…), bash提供了“$@”变量,它扩展为所有用空格分隔的命令行参数。

以Bash为例。

"${array[@]}"是在bash中传递任何数组的正确方式。我想提供一个完整的备忘单:如何准备参数,绕过和处理它们。

Pre.sh -> foo.sh -> bar.sh。

#!/bin/bash

args=("--a=b c" "--e=f g")
args+=("--q=w e" "--a=s \"'d'\"")

./foo.sh "${args[@]}"
#!/bin/bash

./bar.sh "$@"
#!/bin/bash

echo $1
echo $2
echo $3
echo $4

结果:

--a=b c
--e=f g
--q=w e
--a=s "'d'"

如果你确实希望传递相同的参数,请使用“$@”而不是普通的$@。

观察:

$ cat no_quotes.sh
#!/bin/bash
echo_args.sh $@

$ cat quotes.sh
#!/bin/bash
echo_args.sh "$@"

$ cat echo_args.sh
#!/bin/bash
echo Received: $1
echo Received: $2
echo Received: $3
echo Received: $4

$ ./no_quotes.sh first second
Received: first
Received: second
Received:
Received:

$ ./no_quotes.sh "one quoted arg"
Received: one
Received: quoted
Received: arg
Received:

$ ./quotes.sh first second
Received: first
Received: second
Received:
Received:

$ ./quotes.sh "one quoted arg"
Received: one quoted arg
Received:
Received:
Received:
#!/usr/bin/env bash
while [ "$1" != "" ]; do
  echo "Received: ${1}" && shift;
done;

只是认为在尝试测试args如何进入脚本时,这可能更有用