untar 命令在终端中有效，但在 bash 脚本中无效

Question

I am trying to download some public dataset from the inte.net and untar it. I am doing it in a loop since I would like to download several.tar.gz files, put them in a folder and untar them all. The download works and the tar command works in the terminal but not in my bash script. I do not understand this inconsistent behavior.

#!/bin/sh

PATH="$(pwd)/data"
cd $PATH

/usr/bin/curl "https://s3.eu-central-1.wasabisys.com/aicrowd-public-datasets/myfoodrepo/round-2/val.tar.gz" --output val.tar.gz

for file in *.tar.gz
do
    /bin/tar zxf $file
done

Answer 1

You are attempting to use sh in the script but you seem to have been working with bash in your terminal. Test if this works:

#!/bin/bash

directory="$(pwd)/data"
cd $directory

curl "https://s3.eu-central-1.wasabisys.com/aicrowd-public-datasets/myfoodrepo/round-2/val.tar.gz" --output val.tar.gz

for file in *.tar.gz
do
    tar zxf $file
done

Let me know if it helps!

Note:

I also removed absolute paths as they are not needed and change the name of your PATH local variable to directory since PATH is already a variable in your environment for sure.

Answer 2

Using "PATH" as variable name overwrites an existing environment variable. This causes tar to not find things it needs (gzip or bzip2 etc.)