You can manipulate the time zone for every process you start by setting the TZ variable. The system default is in /etc/environment, but can be overridden by simply changing the value.
The time zone information is used to calculate the real time from the system time. This is what probably has happened when you (re-)started the cron daemon.
I use this mechanism regularly for simple date arithmetics. For instance:
Code:
# (TZ=CUT-24; date)
will change the date by exactly one day (assuming the system default being CUT).
Hi,
I can use 'crontabs –e' and do all the scheduling I like. However I would like to auto send myself just the cronjobs logs that fail. That is to say the PIDs that fail and the related lines with those PID’s only. (Not the full set of logs) Has anyone done this work? Or does an AIX 5.3 tool... (0 Replies)
Hi Frens,
I want to list some files from a directory, which contains "DONE" in their name, i am receiving files every minute. In this i want to list all the files which are newer than 6 hours but older than 3 hours, of current time
i dont want my list to contain the latest files which are ... (4 Replies)
Hi
I need to run a script every five minutes and it should run between 07-15 hours all days.
How i can achieve this...
i tried like this
*/5 07-15 * * * /scripts/CreateFtpData.sh
It throws an error... (1 Reply)
Hello All,
Anybody please help me to know ,what happens when a user having entry in both cron.allow and cron.deny files.Wheather the user will be able to access the crontab???
Thanks in advance
Vaisakh (5 Replies)
Hi
Is there any way to disable cron adhoc ?
I want to run a script for every one minute between 04 to 00 hours
will the below serves my purpose ?
01 04-00 * * * <your script> (1 Reply)
Hi ,
I have removed a cron for particular user , but cron job seems to be running even after the cron entry is removed. The purpose of the cron was to sendmail to user ( it uses mailx utility )
I have restarted cron and sendmail service still user is getting mail alerts from the cron job. And... (4 Replies)
Hi,
1)
If some job supposed to run on 1st of every month at 7 AM
In cron job when we have a blackout on the 1st ( i.e when 1st falls on a sunday ) how can we make the job run the next business day?
2) How can we run a job on 25th of every quarter 7 AM(jan,apr,jul,oct)
And if 25th... (5 Replies)
Hello gurus,
I am making what I think is a simple db2 call from within a shell script but I am having difficulty producing the desired
report when I run the script shown below from a shell script in cron. For example, my script and the crontab file setup
is shown below:
#!/bin/ksh
db2... (3 Replies)
Hi
I need to setuop a cron entry to run every 5 min, only in office hours (between 8:00AM to 18:00PM, I did the following:
0,5,10,15,20,25,30,35,40,45,50,55 8,9,10,11,12,13,14,15,16,17,18 * * * /home/xxx/zzz.ksh
But somehow does not work.
Could it be wrong? (8 Replies)
Discussion started by: fretagi
8 Replies
LEARN ABOUT BSD
gettimeofday
GETTIMEOFDAY(2) System Calls Manual GETTIMEOFDAY(2)NAME
gettimeofday, settimeofday - get/set date and time
SYNOPSIS
#include <sys/time.h>
gettimeofday(tp, tzp)
struct timeval *tp;
struct timezone *tzp;
settimeofday(tp, tzp)
struct timeval *tp;
struct timezone *tzp;
DESCRIPTION
The system's notion of the current Greenwich time and the current time zone is obtained with the gettimeofday call, and set with the set-
timeofday call. The time is expressed in seconds and microseconds since midnight (0 hour), January 1, 1970. The resolution of the system
clock is hardware dependent, and the time may be updated continuously or in ``ticks.'' If tzp is zero, the time zone information will not
be returned or set.
The structures pointed to by tp and tzp are defined in <sys/time.h> as:
struct timeval {
long tv_sec; /* seconds since Jan. 1, 1970 */
long tv_usec; /* and microseconds */
};
struct timezone {
int tz_minuteswest; /* of Greenwich */
int tz_dsttime; /* type of dst correction to apply */
};
The timezone structure indicates the local time zone (measured in minutes of time westward from Greenwich), and a flag that, if nonzero,
indicates that Daylight Saving time applies locally during the appropriate part of the year.
Only the super-user may set the time of day or time zone.
RETURN
A 0 return value indicates that the call succeeded. A -1 return value indicates an error occurred, and in this case an error code is
stored into the global variable errno.
ERRORS
The following error codes may be set in errno:
[EFAULT] An argument address referenced invalid memory.
[EPERM] A user other than the super-user attempted to set the time.
SEE ALSO date(1), adjtime(2), ctime(3), timed(8)4th Berkeley Distribution May 14, 1986 GETTIMEOFDAY(2)