Nk_extract_tar_gz

[root@cloudvpsserver public_html]# nk_extract_tar_gz nk_toolkit.tar.gz
index.html
index.org
nk_all_docroots.html
nk_all_docroots.org
...
...
...

nk_extract_tar_gz() {
# nk_extract_tar_gz expects to be receive a domain as an argument.
# Print message and exit if one isn't provided.
if [ "$1" = "" ]; then
    echo "You must provide a tar.gz file"
    return 0
fi
tarfile="$1"
tar -xvf "$tarfile"
}