chmod - change mode of a file
integer function chmod (name, mode)
character*(*) name, mode
This function changes the filesystem mode of file name. Mode can be
any specification recognized by chmod(1). Name must be a single path-
The normal returned value is 0. Any other value will be a system error
/bin/chmod exec'ed to change the mode.
Pathnames can be no longer than MAXPATHLEN as defined in <sys/param.h>.
4th Berkeley Distribution 18 July 1983 CHMOD(3F)