Man page - logwtmp(3)

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Manual

updwtmp

NAME
LIBRARY
SYNOPSIS
DESCRIPTION
FILES
ATTRIBUTES
VERSIONS
STANDARDS
HISTORY
SEE ALSO

NAME

updwtmp, logwtmp - append an entry to the wtmp file

LIBRARY

System utilities library ( libutil , -lutil )

SYNOPSIS

#include <utmp.h>

void updwtmp(const char * wtmp_file , const struct utmp * ut );
void logwtmp(const char * line , const char * name , const char * host );

DESCRIPTION

updwtmp () appends the utmp structure ut to the wtmp file.

logwtmp () constructs a utmp structure using line , name , host , current time, and current process ID. Then it calls updwtmp () to append the structure to the wtmp file.

FILES

/var/log/wtmp

database of past user logins

ATTRIBUTES

For an explanation of the terms used in this section, see attributes (7).

Image grohtml-203781-1.png

VERSIONS

For consistency with the other "utmpx" functions (see getutxent (3)), glibc provides (since glibc 2.1):

#define _GNU_SOURCE /* See feature_test_macros(7) */
#include <utmpx.h>
void updwtmpx (const char * wtmpx_file , const struct utmpx * utx );

This function performs the same task as updwtmp (), but differs in that it takes a utmpx structure as its last argument.

STANDARDS

None.

HISTORY

Solaris, NetBSD.

SEE ALSO

getutxent (3), wtmp (5)