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Chmod 255

Chmod 255 (chmod a+rwx,u-rx,g-w,o-w) sets permissions so that, (U)ser / owner can't read, can write and can't execute. (G)roup can read, can't write and can execute. (O)thers can read, can't write and can execute.

Owner Rights (u) Group Rights (g) Others Rights (o)
Read (4)
Write (2)
Execute (1)
Extra chmod command options







Use the octal CHMOD Command:

chmod -R 255 folder_name
OR use the symbolic CHMOD Command:

chmod -R a+rwx,u-rx,g-w,o-w folder_name
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Chmod Permissions for chmod 255

Chmod owner

  • Owner can't read
  • Owner can write
  • Owner can't execute

Chmod group

  • Group can read
  • Group can't write
  • Group can execute

Chmod other

  • Others can read
  • Others can't write
  • Others can execute

How chmod 255 looks in file listing

For files

After changing a file's mode to 255 the file's mode will be displayed in Unix style file lsting as: --w-r-xr-x

For folders

After changing a directory's mode to 255 the folder's mode will be displayed in Unix style file lsting as: d-w-r-xr-x