Script to recursively extract archives

auto_extract.sh

#!/usr/bin/env bash
# Usage: /absolute/path/to/script.sh /absolute/path/to/folder/with/archive

for file in $1/* ; do

    if [ -f "$file" ] ; then

        echo Found file: $file
        info=$(file $file | tr '[:upper:]' '[:lower:]')

        case $info in
            *bzip2*)
                echo found bzip2
                mkdir $1/a
                cd $1/a
                bzip2 -kd $file -c > archive
                /Users/user/Downloads/auto_extract.sh $1/a
                ;;
            *gz*)
                echo found gz
                mkdir $1/a
                cd $1/a
                gunzip -d $file -c > archive
                /Users/user/Downloads/auto_extract.sh $1/a
                ;;
            *zip*)
                echo zip
                unzip $file -d $1/a
                /Users/user/Downloads/auto_extract.sh $1/a
                ;;
            *)
                echo [Unknown] $info
                exit 1
        esac
    fi
done