add file unpacker

This is to unpack files.

scripts/file_unpacker.sh

@@ -0,0 +1,15 @@
+## only needs to have the file with a file passed into it to get the filetype.
+## only supports tar.gz/xz and zip currently for unpacking.
+## The value for ${DOWNLOAD_LINK##*/} is 
+
+FILETYPE=$(file -F ',' ${DOWNLOAD_LINK##*/} | cut -d',' -f2 | cut -d' ' -f2)
+if [ "$FILETYPE" == "gzip" ]; then
+    tar xzvf ${DOWNLOAD_LINK##*/}
+elif [ "$FILETYPE" == "Zip" ]; then
+    unzip ${DOWNLOAD_LINK##*/}
+elif [ "$FILETYPE" == "XZ" ]; then
+    tar xvf ${DOWNLOAD_LINK##*/}
+else
+    echo -e "unknown filetype. Exeting"
+    exit 2 
+fi