目录命令行参数

Question

I'm having trouble taking in a path where to run the script as a command line argument, test is it exists, then changing to that path to perform work. Here what I'm trying:

#!/bin/bash

scriptpath=$1

if [ $# -lt 1 ]
then
    echo "Usage: script.sh <directory_name>"
fi

if [ -d scriptpath ]
then
    # work......
else 
    echo "Directory does not exist"

fi

Answer 1

Change this:

if [ -d scriptpath ]

to this:

if [ -d $scriptpath ]

Also, I recommend making use of "" , so that your script still behaves properly when the argument contains weird characters. (Unix allows spaces, newlines, asterisks, even control characters inside filenames.) So:

scriptpath="$1"

...

if [ -d "$scriptpath" ]