You wouldn't need to change the script, add a new one that invokes the one you were going to start from cron. If you cannot add a new script, then you'll end up with two entries in the crontab.
Note that some versions of cron do not support */3 notation.
Last edited by agama; 10-19-2011 at 10:16 PM..
Reason: simplification and typo correction
I want to know if there is a way to make a certain set of programs start in order at system startup with cron or something else i dont know about. (3 Replies)
Hi,
can you please help me with one problem?
There is some server, there are a lot of AIX applications which run on this server under different UserIDs.
These applications starts via crontab.
From time to time some application doesn't start.
What can this "not-action" be dependent on?
At... (5 Replies)
Hello,
I would like setup a CRON job to rename my server's name (host name) every day. For some reason it changes its own name every couple days to server-2.local fron server.local.
Thank you!
-Chris (3 Replies)
Is there anyway to get the start time and end time / status of a crontab job which was just completed? Of course, we know the start time of the crontab job since we are scheduling. But I would like to know process start and time recorded somewhere or can be fetched from a command like 'ps'. ... (3 Replies)
Hello All,
I have a problem calculating the time difference between start and end timings...!
the timings are given by 24hr format..
Start Date : 08/05/10 12:55
End Date : 08/09/10 06:50
above values are in mm/dd/yy hh:mm format.
Now the thing is, 7th(08/07/10) and... (16 Replies)
HI I am new to unix .
I wanted to create a cron job that runs a script every 10 min .So when I enter
vi /etc/crontab
I get the following output
SHELL=/bin/bash
PATH=/sbin:/bin:/usr/sbin:/usr/bin
MAILTO=root
HOME=/
# run-parts
01 * * * * root run-parts /etc/cron.hourly
02 4 * *... (1 Reply)
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)
I've created a script to copy backup files from an HP-UX 11iv3 system to an NFS share on another machine. I want to schedule the script to run via cron. The script is simply three lines of cp /backups/Backup /shared/Backup. I've saved the script as a .sh file and call it with KSH. Do I need to... (3 Replies)
Discussion started by: jduehmig
3 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)