stime - Man Page

set time


#include <time.h>

int stime(const time_t *t);

Feature Test Macro Requirements for glibc (see feature_test_macros(7)):


    Since glibc 2.19:
    Glibc 2.19 and earlier:


NOTE: This function is deprecated; use clock_settime(2) instead.

stime() sets the system's idea of the time and date. The time, pointed to by t, is measured in seconds since the Epoch, 1970-01-01 00:00:00 +0000 (UTC). stime() may be executed only by the superuser.

Return Value

On success, zero is returned. On error, -1 is returned, and errno is set to indicate the error.



Error in getting information from user space.


The calling process has insufficient privilege. Under Linux, the CAP_SYS_TIME privilege is required.

Conforming to



Starting with glibc 2.31, this function is no longer available to newly linked applications and is no longer declared in <time.h>.

See Also

date(1), settimeofday(2), capabilities(7)


This page is part of release 5.13 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at

Referenced By

capabilities(7), rtc(4), syscalls(2), system_data_types(7).

2021-03-22 Linux Programmer's Manual