remaster/src/func/filesystem_get_type

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#!/bin/bash
#remaster lib
[ -d "<LIBDIR>" ] || { echo "LIBDIR not exist"; exit 1; }
#filesystem_get_type [dir]
#(String)-> ext4, ext2, btfs, fuse, ...
function filesystem_get_type() {
fs_aTemp=(`df -T "$1"`)
echo ${fs_aTemp[9]}
}
#this func is standalone executable
[ -n "$1" ] && {
filesystem_get_type $@
}