11-15-2003
Read paragraph 3 of my first post for comments on getuid(). Hmmm, I see that I said to use getpwnam(). Actually, since we have the uid, we should use getpwuid().
ctermid() is a silly little function that always returns the string "/dev/tty". I will never understand why people write functions to return a constant.
cuserid() was dropped from posix in 1990. It is still available on many systems, but I recommend that it not be used for new code. It first tries the technique I mentioned in the second paragraph of my first post. If that fails, it then uses the getuid() technique that I mentioned in my third paragraph. No information is available to the caller about which technique worked. And it never tries the technique mentioned in my first paragraph which posix seems to promote as the preferred method.
Also there is getlogin() which automates looking up the controlling terminal in utmp.
I have the uneasy feeling that there are more functions that automate some conbination of the 3 techniques that I mentioned. It's dangerous to be sure of a negative, but I'm rather sure that there isn't a 4th technique lurking around.
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LEARN ABOUT OSX
dsenableroot
dsenableroot(8) BSD System Manager's Manual dsenableroot(8)
NAME
dsenableroot -- enables or disables the root account.
SYNOPSIS
dsenableroot [-d] [-u username] [-p password] [-r rootPassword]
DESCRIPTION
dsenableroot sets the password for the root account if enabling the root user account. Otherwise, if disable [-d] is chosen, the root
account passwords are removed and the root user is disabled.
A list of flags and their descriptions:
-u username
Username of a user that has administrative privileges on this computer.
-p password
Password to use in conjunction with the specified username. If this is not specified, you will be prompted for entry.
-r rootPassword
Password to be used for the root account. If this is not specified for enabling, you will be prompted for entry.
EXAMPLES
-dsenableroot
Your username will be used and you will be queried for both your password and the new root password to be set to enable the root
account.
-dsenableroot -d
Your username will be used and you will be queried for only your password to disable the root account.
-dsenableroot -u username -p userpassword -r rootpassword
The supplied arguments will be used to enable the root account.
-dsenableroot -d -u username -p userpassword
The supplied arguments will be used to disable the root account.
Mac OS August 08 2003 Mac OS