TIME(2) Linux Programmer's Manual TIME(2)NAME
time - get time in seconds
SYNOPSIS
#include <time.h>
time_t time(time_t *t);
DESCRIPTION
time() returns the time as the number of seconds since the Epoch, 1970-01-01 00:00:00 +0000 (UTC).
If t is non-NULL, the return value is also stored in the memory pointed to by t.
RETURN VALUE
On success, the value of time in seconds since the Epoch is returned. On error, ((time_t) -1) is returned, and errno is set appropriately.
ERRORS
EFAULT t points outside your accessible address space.
CONFORMING TO
SVr4, 4.3BSD, C89, C99, POSIX.1-2001. POSIX does not specify any error conditions.
NOTES
POSIX.1 defines seconds since the Epoch as a value to be interpreted as the number of seconds between a specified time and the Epoch,
according to a formula for conversion from UTC equivalent to conversion on the naive basis that leap seconds are ignored and all years
divisible by 4 are leap years. This value is not the same as the actual number of seconds between the time and the Epoch, because of leap
seconds and because clocks are not required to be synchronized to a standard reference. The intention is that the interpretation of sec-
onds since the Epoch values be consistent; see POSIX.1 Annex B 2.2.2 for further rationale.
SEE ALSO date(1), gettimeofday(2), ctime(3), ftime(3), time(7)COLOPHON
This page is part of release 3.27 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
Linux 2010-02-25 TIME(2)
Check Out this Related Man Page
TIME(2) Linux Programmer's Manual TIME(2)NAME
time - get time in seconds
SYNOPSIS
#include <time.h>
time_t time(time_t *t);
DESCRIPTION
time() returns the time as the number of seconds since the Epoch, 1970-01-01 00:00:00 +0000 (UTC).
If t is non-NULL, the return value is also stored in the memory pointed to by t.
RETURN VALUE
On success, the value of time in seconds since the Epoch is returned. On error, ((time_t) -1) is returned, and errno is set appropriately.
ERRORS
EFAULT t points outside your accessible address space.
CONFORMING TO
SVr4, 4.3BSD, C89, C99, POSIX.1-2001. POSIX does not specify any error conditions.
NOTES
POSIX.1 defines seconds since the Epoch using a formula that approximates the number of seconds between a specified time and the Epoch.
This formula takes account of the facts that all years that are evenly divisible by 4 are leap years, but years that are evenly divisible
by 100 are not leap years unless they are also evenly divisible by 400, in which case they are leap years. This value is not the same as
the actual number of seconds between the time and the Epoch, because of leap seconds and because system clocks are not required to be syn-
chronized to a standard reference. The intention is that the interpretation of seconds since the Epoch values be consistent; see
POSIX.1-2008 Rationale A.4.15 for further rationale.
SEE ALSO date(1), gettimeofday(2), ctime(3), ftime(3), time(7)COLOPHON
This page is part of release 3.44 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
Linux 2011-09-09 TIME(2)
Any sleek way to convert seconds to hh:mm:ss format .
I know it can be done by mod and divide . Looking for a one liner if possible .
Example
3600 seconds = 01:00:00
3601 seconds = 01:00:01 (2 Replies)
Hello - I have a folder that contains files from 2003 till 2010. I am trying to figure out a command that would seperate each years file and show me a count?
Even if i can find a command that would give me year by year count, thats good enough too.
Thanks (8 Replies)
A few years ago, Dell announced they were selling PCs with Linux (Ubuntu) preinstalled or with no OS installed. It was about time! So a couple years ago I bought the Inspiron 1525n laptop that I'm typing this on with Ubuntu preinstalled. Yea! (Though I immediately wiped Ubuntu and installed... (7 Replies)
Hi Guys ,
I see a weird problem with one of the AIX Machine, The time is changing randomly on the server. The seconds part of the time is what is the problem which is jumping on a uneven order and coming back to the original state after some time and again the same.. I have collected the time... (8 Replies)
Hi,
i'm currently part of an apprenticeship becoming a IT specialist.
Because I'm already an electronic technician (finished apprenticeship) I can do this one in 2 years (normally you need 3).
Thing is, in school they started out with basic unix stuff (working with the shell) in the first... (3 Replies)
Hi All,
Please read the below data carefully.
I need an unix command for converting unix timestamp to Epoch timestamp.
I need to daily convert this today's unix(UTC) time to epoch time, so i am thinking to make a shellscript for this.
Please help me for this by providing... (3 Replies)
Hi there
I came across this script online to convert Epoch time to proper date format, but I am receiving the following error
Also, I have HISTTIMEFORMAT set in user's .profile so that their history output shows time stamps. Additionally I have changed their .history location to a dedicated... (9 Replies)
Hi all,
Can anyone suggest how to formulate the if/then when TIME equals a certain time, in this case 23:55:00
export TIME=`date +%T`
function tnsrec {
if $TIME = 23:55:00; then
otherfunction
else exit
fi
}
Thanks in advance.
jd (6 Replies)
Hello all,
I am a newbie in shell scripting.
I want to know what does the below text means?
6.355u 1.679s 0:12.68 63.2% 0+0k 0+0io 0pf+0w
I am getting this line (on terminal) after every successful execution of my script.
Thanks in advance . . :)
-MD (15 Replies)
Hello,
I am a Linux/Unix System Administrator as a profession from last 8 years and now want to jump into Linux programming to contribute something to this in which i spent these many years for its integration/Administration/Configuration/Servers Setups.
Please let me know i can start working... (5 Replies)
Hello,
I have a file with below contents and need to set seconds value to 00 (as you can see few time stamps are with 01 seconds)
18:16:00 8192 7301 89 11
18:21:00 8192 7305 89 11
18:26:00 8192 7306 89 11
18:31:00 8192 7306 ... (6 Replies)
Hi Team,
Could you please let me know ,how to convert Epoch column to timestamp in a flat file.
"57894"|"1454247163111"|"""HH"""
"57897"|"1454247163111"|"""HH"""
"7906"|"1454247163111"|"""ss"""
I want second field as timestamp.
This thread has been moved from a non-technical forum to... (6 Replies)
I don't know how to start this but here goes.
I've been "using" Linux for over 10 years, possibly more and I still feel like I'm nowhere
where I should be. I'll be fair most of my time was spent either figuring out how
to run games on *nix at the time but as I got older and "wiser" I... (8 Replies)