11-10-2014
if the cron was not stopped there is no reason to start it - its independant of what it executes...
What has not been run due to issues can only be rescheduled... ( e.g. next day -so you only change the day... but if it ruins all you schedules you have no other choice do run them in sequence maually or sched them from now...)
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1. Answers to Frequently Asked Questions
We have hundreds of threads involving cron and crontab. Rather than creating a post with dozens of links, I thought I'd just write up a tutorial with only a few selected links.
The Basics
cron is a daemon that runs periodic tasks. crontab is name of textfile that is used to control cron. ... (0 Replies)
Discussion started by: Perderabo
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2. UNIX for Advanced & Expert Users
i have scipt which is calling some
other scripts and some built-in utilities like SED, find etc..
i started this script using nohup
(e.g: nohup scriptname &)
now i want to kill this script and all the child processes
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3. UNIX Desktop Questions & Answers
hi,
I have scripts which are running every 3 minutes. The scripts include connection to a database, using sqlplus. Sometimes, the connection fails (invalid username or password, locked user etc..) and the connection returns the error code, to the unix screen or to a file.
I want whenever there's... (2 Replies)
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I try to write a python script, which analyze user logon time with "who" command.
When i start script in bash, i get this result:
USER=mnadmin tty7 2009-04-18 11:37 (:0)
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USER=mnadmin tty7 Apr 18 11:37 (:0)
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Hi all,
I have set up a cron job which calls another shell script shell script which in turn calls a Java process. The cron tab looks so.
0,30 7-18 * * 1-5 /u01/home/weblogic/brp/bin/checkstatus.sh >> /u01/home/weblogic/logs/checkstatus.log
The checkstatus.sh scripts looks like this.
... (4 Replies)
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hi,
i need to run one script in cron...
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hi,
instead of typing crontab -e i gave crontab -r and hit enter. So i lost all my scripts.
Is there any way to restore the deleted scripts?
Please help me out
Thanks
Ajay (3 Replies)
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8. UNIX for Dummies Questions & Answers
I'm trying to create a crontab that runs every hour and runs a script in my $HOME/bin directory.
Everytime it goes to run it I get this mail.
Message 14:
From root@xx.xxxx.edu Thu Apr 12 14:03:01 2012
Return-Path: <root@xx.xxxx.edu>
X-Original-To: bbowers
Delivered-To:... (4 Replies)
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9. Shell Programming and Scripting
echo "Hi $username, guess what my favourite colour is!"
count=0
while ]
do
read colour
if
then
$count=1
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elif
then
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Hi,
I'm trying to take backups of script files listed in cron tab
but,my cron entry has value like this
10 3 * * * /usr/sbin/logadm
15 3 * * 0 /usr/lib/fs/nfs/nfsfind
30 3 * * * && /usr/lib/gss/gsscred_clean
#10 3 * * * /usr/lib/krb5/kprop_script ___slave_kdcs___
00,15,30,45 * * * *... (1 Reply)
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CRON(8) System Manager's Manual CRON(8)
NAME
cron - clock daemon
SYNOPSIS
/usr/sbin/cron
DESCRIPTION
Cron executes commands at specified dates and times according to the instructions in the files /etc/crontab and /etc/crontab.local. None,
either one, or both of these files may be present. Since cron never exits, it should only be executed once. This is best done by running
cron from the initialization process through the file /etc/rc; see init(8).
The crontab files consist of lines of seven fields each. The fields are separated by spaces or tabs. The first five are integer patterns
to specify:
o minute (0-59)
o hour (0-23)
o day of the month (1-31)
o month of the year (1-12)
o day of the week (1-7 with 1 = Monday)
Each of these patterns may contain:
o a number in the range above
o two numbers separated by a minus meaning a range inclusive
o a list of numbers separated by commas meaning any of the numbers
o an asterisk meaning all legal values
The sixth field is a user name: the command will be run with that user's uid and permissions. The seventh field consists of all the text
on a line following the sixth field, including spaces and tabs; this text is treated as a command which is executed by the Shell at the
specified times. A percent character (``%'') in this field is translated to a new-line character.
Both crontab files are checked by cron every minute, on the minute.
FILES
/etc/crontab
/etc/crontab.local
7th Edition October 23, 1996 CRON(8)