CHMOD Calculator CHMOD Calculator

Chmod 1640

Chmod 1640 (chmod a+rwx,u-x,g-wx,o-rwx,ug+s,+t,u-s,g-s) sets permissions so that, (U)ser / owner can read, can write and can't execute. (G)roup can 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 1640 folder_name
OR use the symbolic CHMOD Command:

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

Chmod Permissions for chmod 1640

Chmod owner

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

Chmod group

  • Group can 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 1640 looks in file listing

For files

After changing a file's mode to 1640 the file's mode will be displayed in Unix style file lsting as: -rw-r----T

For folders

After changing a directory's mode to 1640 the folder's mode will be displayed in Unix style file lsting as: drw-r----T