CHMOD Calculator CHMOD Calculator

Chmod 0400

Chmod 0400 (chmod a+rwx,u-wx,g-rwx,o-rwx,ug-s,-t) sets permissions so that, (U)ser / owner can read, can't write and can't execute. (G)roup can't read, can't write and can't execute. (O)thers can't read, can't write and can't 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 0400 folder_name
OR use the symbolic CHMOD Command:

chmod -R a+rwx,u-wx,g-rwx,o-rwx,ug-s,-t folder_name

Chmod Permissions for chmod 0400

Chmod owner

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

Chmod group

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

Chmod other

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

How chmod 0400 looks in file listing

For files

After changing a file's mode to 0400 the file's mode will be displayed in Unix style file lsting as: -r--------

For folders

After changing a directory's mode to 0400 the folder's mode will be displayed in Unix style file lsting as: dr--------