Extract command for bash

.bashrc

function extract {
 if [ -z "$1" ]; then
    # display usage if no parameters given
    echo "Usage: extract ."
 else
if [ -f $1 ] ; then
        # NAME=${1%.*}
        # mkdir $NAME && cd $NAME
        case $1 in
          *.tar.bz2) tar xvjf ../$1 ;;
          *.tar.gz) tar xvzf ../$1 ;;
          *.tar.xz) tar xvJf ../$1 ;;
          *.lzma) unlzma ../$1 ;;
          *.bz2) bunzip2 ../$1 ;;
          *.rar) unrar x -ad ../$1 ;;
          *.gz) gunzip ../$1 ;;
          *.tar) tar xvf ../$1 ;;
          *.tbz2) tar xvjf ../$1 ;;
          *.tgz) tar xvzf ../$1 ;;
          *.zip) unzip ../$1 ;;
          *.Z) uncompress ../$1 ;;
          *.7z) 7z x ../$1 ;;
          *.xz) unxz ../$1 ;;
          *.exe) cabextract ../$1 ;;
          *) echo "extract: '$1' - unknown archive method" ;;
        esac
else
echo "$1 - file does not exist"
    fi
fi
}