1 .\" Copyright (c) 1990, 1991 The Regents of the University of California.
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28 .\" from: @(#)ctermid.3 5.2 (Berkeley) 4/19/91
29 .\" $NetBSD: cuserid.3,v 1.11 2003/08/07 16:44:17 agc Exp $
42 .Fn cuserid "char *buf"
45 This interface is available from the compatibility library, libcompat and
52 function returns a character string representation of the user name
53 associated with the effective user ID of the calling process.
59 pointer, the user name is copied into the memory referenced by
63 is assumed to point to an array at least
65 (as defined in the include
69 Otherwise, the user name is copied to a static buffer.
78 otherwise the address of the static buffer is returned.
80 If the user name could not be determined, if
84 pointer, the null character
101 Due to irreconcilable differences in historic implementations,
106 This implementation exists purely for compatibility with existing programs.
107 New programs should use one of the following three alternatives to
108 obtain the user name:
110 .Bl -enum -offset indent -compact
113 to return the user's login name.
115 .Nm getpwuid Ns Pq Fn geteuid
116 to return the user name associated with the calling process' effective user ID.
118 .Nm getpwuid Ns Pq Fn getuid
119 to return the user name associated with the calling process' real user ID.