CHMOD Calculator

Chmod 400

Chmod 400 (chmod a+rwx,u-wx,g-rwx,o-rwx) 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 r − −
Write 2 − − −
Execute 1 − − −

Special bits

Setuid 4000 Setgid 2000 Sticky Bit 1000

Extra chmod command options

Output

Modifiers

Octal CHMOD command

$ chmod -R 400 folder_name

Symbolic CHMOD command

$ chmod -R a+rwx,u-wx,g-rwx,o-rwx folder_name

Chmod Permissions for chmod 400

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 400 looks in file listing

For files

After changing a file's mode to 400, the file appears as:

- r--------

For folders

After changing a directory's mode to 400, the folder appears as:

d r--------