bash extract function

it's convenient to define this function in your bashrc, s.t. you dont have to think of all the different file formats while extracting.

source: https://coderwall.com/p/agmblq/bash-function-for-extract-every-archive-with-one-word

---

function extract()
{
     if [ -f $1 ] ; then
         case $1 in
            *.tar.bz2)
                tar xvjf $1
                ;;
            *.tar.xz)
                tar xvJf $1
                ;;
            *.tar.gz)
                tar xvzf $1
                ;;
            *.bz2)
                bunzip2 $1
                ;;
            *.rar)
                unrar x $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
                ;;
            *)
                echo "'$1' cannot be extracted via extract"
                ;;
        esac
    else
        echo "'$1' is not a valid file"
    fi
}

UPDATE: See my post about dtrx.