15.3 Hide or Unhide a File Permanently From PC in CMD

to hide a file we use attrib +h +r +s [filename.ext] to unhide use attrib -h -r -s [filename.ext]

for all files we use same command without mentioning file name: attrib +h +r +s and to unhide attrib -h -r -s

Note : HIdden file cannot be seen using "show hidden items" option ... https://www.youtube.com/watch?v=NwJFboVj7nM