@Maikhai,

You might want to check the man pages or the official documentation for more details on available options. If you need more assistance, feel free to ask!

extract ()
{
if [ -f $1 ]; then
case $1 in
*.tar.bz2)
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
;;
*.tar.xz)
tar -xJf $1
;;
*)
echo “‘$1’ cannot be extracted via >extract<"
;;
esac;
else
echo "'$1' is not a valid file";
fi
}