---------- Post updated at 11:54 AM ---------- Previous update was at 10:36 AM ----------
Quote:
Originally Posted by admin_xor
You can run a con job from a central machine to shutdown other machine using ssh. You need to configure ssh key sharing though for this to be working.
The below crontab entry will shutdown every machine specified in a file called /root/machines at 12 o'clock at night everyday (considering you are using Linux machines; syntax for shutting down other UNIX machines varies widely).
I assume you are already familiar with cron and how to schedule job with it. Below is the format for crontab entries. For detailed info, check the man page.
ya now i have checked the shutdown command its working fine , But im having Centos as my server and there r 50 Pcs with ubuntu , I want to shutdown all 50 Pcs @ 06:05 PM But it need warning message @ 5:55 PM is it possible how can i set the command pls help me
solaris 10
logged in as root to command line...want to shut the system down....could not do this....when i chose shutdown the system seemed to squawk at me saying i'd lose whatever i was working on would be lost unless i logged out...after proceeding through this it took me to the gui log in... (6 Replies)
Dear Exerts,
I want to schedule a script which could run after every 35 minutes.
please find below the command but it is not woring and running after every 35 minutes.
35 * * * * /opt/home/backup/test_dir/abc.sh > /opt/home/backup/test_dir/abc_cronlog.txt
Please tell me what is the problem... (7 Replies)
I have Oracle 9i R2 on AIX 5.2. My Database is running in shared server mode (MTS).
Sometimes when I shutdown the database it shutsdown cleanly in 4-5 mints and sometimes it takes good 15-20 minutes and then I get some ora-600 errors and only way to shutdown is by opening another session and... (7 Replies)
I have a smart-ups connected to my OS X Snow Leopard server ver. 10.6. Based on the docs and forums I read, I have been trying to use the software provided by APC, PCNS. I have also tried to just use the UPS communications cable provided and use the OS' "UPS options". Neither of them work exactly... (1 Reply)
hi everyone I'm newbie in this forum hope I can get some help here :)
I have a command in crontab that executed every 1 minute
sometime this command need more than 1 minute to finish
the problem is, the crontab execute this command although it's not finish processing yet and causing the system... (7 Replies)
This is probably a simple question, but I'm new with writing scripts for Linux (IPFire in this case) and Google wasn't helpful with this.
When creating a script, what is the best and/or proper way to have it exit automatically if the reboot or shutdown command is given? If that's even... (2 Replies)
Dear All,
I created a small script to get the CPU, GIS usage etc automatically. However when i run this script manually its working , but when i run through cronjob i am not getting any output.
Can anyone please help me on this. I am using SuseLinux.
Thank you in advance.
#!/bin/sh
{... (2 Replies)
Hello,
I have a backup script that runs an rsync backup to an external drive. I use the script frequently on Windows and Linux and have installed it on a Mac. The script has an option to run shutdown after the backup has completed. Since backup can take hours to run, this is an option that is... (10 Replies)
Discussion started by: LMHmedchem
10 Replies
LEARN ABOUT PLAN9
cron
CRON(8) System Manager's Manual CRON(8)NAME
cron - clock daemon
SYNOPSIS
auth/cron [-c]
DESCRIPTION
Cron executes commands at specified dates and times according to instructions in the files /cron/user/cron. It runs only on an authentica-
tion server. Option -c causes cron to create /cron/user and /cron/user/cron for the current user; it can be run from any Plan 9 machine.
Blank lines and lines beginning with # in these files are ignored. Entries are lines with fields
minute hour day month weekday host command
Command is a string, which may contain spaces, that is passed to an rc(1) running on host for execution. The first five fields are integer
patterns for
minute 0-59
hour 0-23
day of month 1-31
month of year 1-12
day of week 0-6; 0=Sunday
The syntax for these patterns is
time : '*'
| range
range : number
| number '-' number
| range ',' range
Each number must be in the appropriate range. Hyphens specify inclusive ranges of valid times; commas specify lists of valid time ranges.
To run the job, cron calls host and authenticates remote execution, equivalent to running rx host command (see con(1)). The user's profile
is run with $service set to rx.
Cron is not a reliable service. It skips commands if it cannot reach host within two minutes, or if the cron daemon is not running at the
appropriate time.
EXAMPLES
Here is the job that mails system news.
% cat /cron/upas/cron
# send system news
15 8-17, 21 *** helix /mail/lib/mailnews
%
SOURCE
/sys/src/cmd/auth/cron.c
SEE ALSO con(1), rc(1)CRON(8)