10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
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)
Discussion started by: System Admin 77
5 Replies
2. Shell Programming and Scripting
Hi
I have a requirement to write a shell script,that will check the all commented job in cron job.Please help !! (2 Replies)
Discussion started by: netdbaind
2 Replies
3. Solaris
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)
Discussion started by: chidori
4 Replies
4. UNIX for Advanced & Expert Users
Hello,
Can anyone help me how to set any script as cron job. I have gone through all threads but not able to get the details. Appreciate your help.
I need to set test.pl to run on every Tuesday by 6am in the morning.
I do not the cron file which is defined.
Please help me out.
... (3 Replies)
Discussion started by: jam_prasanna
3 Replies
5. AIX
Hi guys and gals,
I have this script that run perfectly when executed manually. If I place it in a cron to run on a schedule, it fails. Error is:
exec(): 0509-036 Cannot load program /usr/local/bin/getlogical because of the following errors:
0509-150 Dependent module... (7 Replies)
Discussion started by: bbbngowc
7 Replies
6. Shell Programming and Scripting
I am trying to set up a simple cron job but it won't work
Is there a special directory that the target program has to run from ??
I noticed that all the other jobs in the file were in /usr/local/bin but even when I put my target script in there it didn't run. Anyone have any idea why ??
... (2 Replies)
Discussion started by: zapper222
2 Replies
7. UNIX for Dummies Questions & Answers
Hi,
How to monitor whether a cron job is running or errored out..?other than checking the process using ps-aef
how to enter the cron job which throws the output in 1 file and errors in other file. i remember it can be done using >1 and >2 ..but not sure..
any expert..please help!! (1 Reply)
Discussion started by: rujus
1 Replies
8. Solaris
I run cron in solaris 10 zone. One cron job which syncing files to nfs mounted on container, creates after finishing another cron proccess(/usr/sbin/cron), and after 100 existing cron proccesses next cron job will not start. It's too weird for me, I'm not able to solve this problem. Theoretically... (3 Replies)
Discussion started by: ron76
3 Replies
9. UNIX for Dummies Questions & Answers
can anybody explain the usage of CRON for adding a cron job. please provide an example also for better understanding !!!
Thanks (1 Reply)
Discussion started by: skyineyes
1 Replies
10. UNIX for Advanced & Expert Users
Hi,
Anyone please let me know how to add an entry for crontab while there are few of entries already in.
When I execute crontab -e, the entries which are added already are displayed. But, I need to add one more entry to the crontab and then after that I need to remove the entry without... (1 Reply)
Discussion started by: minar
1 Replies
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)