GNU/Linux man pages
Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :
GNU/Linux |
CentOS 3.1 |
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logout(3) |
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login, logout − user accounting functions
#include <utmp.h>
void
login(const struct utmp *entry);
int logout(const char *ut_line);
The function login() inserts a new entry into the user accounting database (utmp file). The element ut−>ut_line will be set to the name of the terminal on standard input. If this is not a terminal, login() will use the standard output or standard error output to determine the name of the terminal. The element ut−>ut_type will be set to USER_PROCESS, and ut−>ut_pid will be set to the process ID of the calling process. All remaining elements will be copied from entry.
A copy of the resulting entry is written to the user accounting log file.
The logout() function modifies the user accounting database to indicate that the user on terminal ut_line has logged out.
The logout() function returns 1 if the entry was successfully written to the database, or 0 if an error occurred.
These functions are included in libutil, hence you’ll need to add −lutil to your compiler commandline.
Note that the member ut_user of struct utmp is called ut_name in BSD. Therefore, ut_name is defined as an alias for ut_user in utmp.h.
/var/run/utmp
user accounting database, configured through _PATH_UTMP in <paths.h>
utmp(5), getutent(3)
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logout(3) | |