Bash 打印除 first 之外的所有参数 - 打印返回文件名

Question

I have a bash script which is supposed to print the arguments in two lines. The first line should be the first argument and the second line should be the rest of the arguments

#!/bin/bash

FIRST_ARG="$1"
shift
REST_ARGS="$@"

echo $FIRST_ARG
echo $REST_ARGS

This works fine for normal arguments such as

root@us:~# /bin/bash parse.sh testName test1 test2 test3
testName
test1 test2 test3
root@us:~# 

However, what I want is to send a key value pair as the arguments such as

testName "X-Api-Key: 1be0ad48" "Name: someTest" "Interval: * * * * *"

I am expecting this to produce a result as follows

testName
"X-Api-Key: 1be0ad48" "Name: someTest" "Interval: * * * * *"

Including the quotes. However, I am getting the following as result

root@us:~# /bin/bash parse.sh testName "X-Api-Key: 1be0ad48" "Name: someTest" "Interval: * * * * *"
testName
X-Api-Key: 1be0ad48 Name: someTest Interval: parse.sh parse.sh parse.sh parse.sh parse.sh
root@us:~# 

Two things happening extra here that I don't want. 1) It removes the quotes ", 2) It replaces * with the file name.

I tried escaping those with " but it didn't work. Is there a way to solve this? Where am I doing wrong in this?

Answer 1

The only sure way to stash command line arguments is in an array:

#!/bin/bash

first_arg="$1"
shift
rest_args=("$@")
# ........^....^

# show how bash has stored these variables
declare -p first_arg
declare -p rest_args

echo "first = $first_arg"
for arg in "${rest_args[@]}"; do
    echo "arg = $arg"
done

Get out of the habit of using ALLCAPS variable names, leave those as reserved by the shell. One day you'll write PATH=something and then wonder why your script is broken .

Answer 2

the * are expanded because you are doing a echo without quoting $REST_ARGS . try adding quotes like this:

#!/bin/bash

FIRST_ARG="$1"
shift
REST_ARGS="$@"

echo "$FIRST_ARG"
echo "$REST_ARGS"

a solution to keep the double quotes would be to quote the strings using single quote ' like this:

$ bash parse.sh testName '"X-Api-Key: 1be0ad48"' '"Name: someTest"' '"Interval: * * * * *"'
testName
"X-Api-Key: 1be0ad48" "Name: someTest" "Interval: * * * * *"
$

Answer 3

Does what you ask for:

#!/usr/bin/env sh

echo "$1"
shift
printf '"%s" ' "$@"
# or alternatively:
# env printf '%q ' "$@"
echo