chmod()


>>-chmod--(--pathname--,--+-----------+--mode--)---------------><
                          '-operation-'

Function

Changes the mode for the specified path name. It returns 0 if the mode for the specified path name is changed; otherwise, it returns the system call error number.

Parameters

pathname

An absolute or relative path name for a file.

operation

Specifies whether mode bits are to be set, added, or deleted:

=: Set the mode bits. If an operation is not specified, = is used.
+: Add the mode bits to what is currently set for the file.
-: Remove the mode bits from what is currently set for the file.

mode

A string of octal digits for the new file mode.

Example

To set permissions for owner and group to read-write:

call chmod file,660

To add read permission for other:

call chmod file,+4