This is a new one on me. We upgraded a system from AIX 5.3 TL 7 to 6.1 TL 7 yesterday. The app people notified us that their cron jobs weren't running at the right time. So I made a test cron entry and here's what I've found:
So apparently the cron daemon time is an hour ahead of the current time (as displayed by the date command). We've killed the cron daemon multiple times but that hasn't resolved the issue. So things that should run at 5pm (17:00) are really running at 4pm.
Hello,
I've created the script below to compare the content of two files with a delay of an hour. After an hour, the lines that exist in both files, will be printed and executed.
The script now uses a counter to countdown 50 minutes. But what I would prefer is to check the file timestamp of... (3 Replies)
I want to add a crontab entry which should execute for every 4 hours and that 4 hours calculation should begin from the current time.
Normally if I set the crontab entry like this,
00 */4 30 05 * root date >>/tmp/cronout
The above will execute the date command for every 4 hours like... (7 Replies)
Hi,
Can anyone help me in finding how to run a specific job every hour without using crontab.
Say for example i need to run a command ps -aux in the starting of every hour.. (3 Replies)
Hi,
When I set the crontab to run every minute, every hour, it works fine.
* * * * * env > /tmp/env.output
However I want to run it every day at 8:00 AM and it does not run.
* 8 * * * env > /tmp/env.output
I ran the 'date' command which says it's 8AM PST and also the 'TZ'... (5 Replies)
Hi friends, I want to convert 24 hour timing to 12 hour please help me...
my data file looks like this..
13-Nov-2011 13:27:36 15.32044 72.68502
13-Nov-2011 12:08:31 15.31291 72.69807
16-Nov-2011 01:16:54 15.30844 72.74028
15-Nov-2011 20:09:25 15.35096 ... (13 Replies)
I have a cron: 0 5,11,17,23 * * * /home/oracle/scripts/sysize.ksh
This cron will trigger
cat dbsz.txt | mail -s "$TODAY: PROD DB Size" $RECIPIENTS
I don't want to get the e-mail notice 4 times a day. Can I have just one e-mail triggered at 11 AM?
Please advise.
Thank you (3 Replies)
Hi All,
While setting the crontab i am getting the below error,
"/tmp/crontab.XXXXwKymEc" 156L, 15621C written
crontab: installing new crontab
"/tmp/crontab.XXXXwKymEc":74: bad hour
Please help.
Thanks (2 Replies)
Discussion started by: nag_sathi
2 Replies
LEARN ABOUT OSF1
cron
cron(8) System Manager's Manual cron(8)NAME
cron - The system clock daemon
SYNOPSIS
/usr/sbin/cron
DESCRIPTION
The cron daemon runs shell commands at specified dates and times. Commands that are to run according to a regular or periodic schedule are
found within the crontab files. Commands that are to run once only are found within the at files. You submit crontab and at file entries
by using the crontab and at commands. Because the cron process exits only when killed or when the system stops, only one cron daemon
should exist on the system at any given time. Normally, you start the cron daemon from within a run command file.
During process initialization and when cron detects a change, it examines the crontab and at files. This strategy reduces the overhead of
checking for new or changed files at regularly scheduled intervals. The cron command creates a log of its activities. The cron daemon
must be started from the system startup scripts because it must begin execution without a login user ID set. The cron daemon starts each
job with the following process attributes stored with the job by the invoking process: Login user ID Effective and real user IDs Effective
and real group IDs Supplementary groups
It also establishes the following attributes from the authentication profile of the account associated with the login user ID of the invok-
ing process: Audit control and disposition masks Kernel authorizations
DIAGNOSTICS
The at and batch programs will refuse to accept jobs submitted from processes whose login user ID is different from the real user ID.
FILES
Specifies the command path. Main cron directory Directory containing the crontab files. List of allowed users. List of denied users His-
tory information for cron Queue description file for at, batch, and cron
RELATED INFORMATION
Commands: at(1), crontab(1), rc0(8), rc2(8), rc3(8)
Files: queuedefs(4) delim off
cron(8)