diff --git a/README.md b/README.md
index 7e91027..63ae42d 100644
--- a/README.md
+++ b/README.md
@@ -6,4 +6,17 @@ Our magic script to generate omni twrp device tree just using a backup which con
 Get latest jar file from here https://github.com/TwrpBuilder/twrpbuilder_tree_generator/releases/latest
 ### Usage :-
 
-`java -jar TwrpBuilder.jar backup_filename.tar.gz`
+```
+-- USAGE --
+usage: TwrpBuilder [-f <arg>] [-h] [-otg] [-r <arg>] [-t <arg>]
+-- HELP --
+usage: java -jar TwrpBuilder.jar -f backupfile.tar.gz [-f <arg>] [-h] [-otg] [-r
+       <arg>] [-t <arg>]
+HELP
+   -f,--file <arg>         build using backup file (made from app).
+   -h,--help               print this help
+   -otg,--otg-support      add otg support to fstab
+   -r,--recovery <arg>     build using recovery image file
+   -t,--type <arg>         supported option :-
+                           mt , samsung,mrvl
+```
diff --git a/src/mkTree/MakeTree.java b/src/mkTree/MakeTree.java
index ecb2bdc..c57906d 100644
--- a/src/mkTree/MakeTree.java
+++ b/src/mkTree/MakeTree.java
@@ -71,7 +71,7 @@ private void extractKernel(boolean mtk) {
 		}
 		else 
 		{
-		ShellExecuter.mkdir("out");
+		ShellExecuter.mkdir(out);
 		ShellExecuter.command("./umkbootimg -i recovery.img -o "+out);
 		}
 	}
@@ -130,21 +130,21 @@ private void Fstab(String path)
 	}
 	
 	public void extractFstab() {
-		compressionType=ShellExecuter.commandnoapp("cd out && file --mime-type recovery.img-ramdisk.* | cut -d / -f 2 | cut -d '-' -f 2");
+		compressionType=ShellExecuter.commandnoapp("cd "+out+" && file --mime-type recovery.img-ramdisk.* | cut -d / -f 2 | cut -d '-' -f 2");
 		if(compressionType.equals("lzma"))
 		{
 			System.out.println("Found lzma comression in ramdisk");
-			ShellExecuter.command("mv "+out+"recovery.img-ramdisk.gz "+out+"recovery.img-ramdisk.lzma && lzma -d "+out+"recovery.img-ramdisk.lzma  && cd out && cpio -i <recovery.img-ramdisk");
+			ShellExecuter.command("mv "+out+"recovery.img-ramdisk.gz "+out+"recovery.img-ramdisk.lzma && lzma -d "+out+"recovery.img-ramdisk.lzma  && cd "+out+" && cpio -i <recovery.img-ramdisk");
 			lzma=true;
 		}else if(compressionType.equals("gzip"))
 		{
 			System.out.println("Found gzip comression in ramdisk");
-			ShellExecuter.command("gzip -d "+out+"recovery.img-ramdisk.gz && cd out && cpio -i <recovery.img-ramdisk");
+			ShellExecuter.command("gzip -d "+out+"recovery.img-ramdisk.gz && cd "+out+" && cpio -i <recovery.img-ramdisk");
 		}
 		else if(compressionType.equals("lz4"))
 		{
 			System.out.println("Found lz4 comression in ramdisk");
-			ShellExecuter.commandnoapp("cd out && lz4 -d recovery.img-ramdisk.*  recovery.img-ramdisk && cpio -i <recovery.img-ramdisk ");
+			ShellExecuter.commandnoapp("cd "+out+" && lz4 -d recovery.img-ramdisk.*  recovery.img-ramdisk && cpio -i <recovery.img-ramdisk ");
 			lz4=true;
 		}
 		else