WoWS Mod folder backup batch file

     @ECHO OFF
     REM A batch file for saving backups of the mod folders.
     REM Version 1.0, 13 October 2017, by dziban303 of https://worldofwarshipsskins.reddit.com
     REM This assumes you have 7Zip installed at it's default directory of C:\Program Files\7Zip.
     REM If you have it installed elsewhere, you must change the path on those two lines.
     if "%1"=="" goto :fail
     if not exist "%1" goto :wrong
     if "%2"=="f" goto :full
     if "%2"=="-f" goto :full
     echo You have chosen a partial backup with no DDS textures or PSD files. Use switch "f" for a full backup.
     set filename="%1 (no dds or psd).7z"
     "C:\Program Files\7-Zip\7z" a %filename% .\%1\* -xr!*.dds -xr!*.psd -mx=9
     if errorlevel 1 echo Looks like something went wrong. && goto :eof
     echo Done!
     goto :eof
     :full
     echo You have chosen a full backup.
     set filename="%1 (full).7z"
     "C:\Program Files\7-Zip\7z" a %filename% .\%1\* -mx=9
     if errorlevel 1 echo Looks like something went wrong. && goto :eof
     echo Done!
     goto :eof
     :fail
     echo Oops, you didn't enter any arguments.
     echo Usage: backupmods (mod folder) (f)
     echo Example: backupmods 0.6.9.1.1   -- Partial backup
     echo Example 2: backupmods 0.6.9.1.1 f   -- Full backup
     echo Try again.
     goto :eof
     :wrong
     echo That folder (%1) doesn't exist.
     goto :eof