Red Hat / Fedora :: CRON To Shutdown The PC Every 10 Min?
Feb 11, 2010
I'm playing with CRON to perform an automated shutdown. While I'm testing I want CRON to shutdown the PC every 10 min. Here is the crontab.
# crontab -l
0,10,20,30,40,50 * * * * root /sbin/shutdown -h now
I see the command being run in the CRON log, but the PC doesn't shutdown.
Feb 11 11:06:17 localhost crontab[4808]: (root) LIST (root)
Feb 11 11:07:31 localhost crontab[4813]: (root) BEGIN EDIT (root)
Feb 11 11:07:58 localhost crontab[4813]: (root) END EDIT (root)
Feb 11 11:10:01 localhost CROND[4821]: (root) CMD (root /sbin/shutdown -h now)
How would I debug this to figure why my shutdown command is being ignored?
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Jul 5, 2011
Just read through some cron manuals. (man -k cron).Didnt understood that much though.I'm a gamer and loosing control over time at nights.
So what i want is that my computer shuts down itself at latest 1:30 am. Do i need to set up the command for each day (monday, tuesday.. and so on) or is there an option simliar to my 'example' below?
€dit: Both examples should do the trick.
Code:
# m h dom mon dow command
30 1 * * 1,2,3,4,5 shutdown -h +5 Get some sleep dude!
30 1 * * 1-5 shutdown -h +5 Get some sleep dude!
Where as 1 to 5 would be all weekdays, but not saturday or sunday morning at 1:30am.If i can shorten it to 1 line instead of 7 lines (one per day of week) that would be great.
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Mar 9, 2011
Is it possible to shutdown or to halt by means of cron ? this crontab entry is doing nothing: 45 3 * * * halt
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Jan 4, 2010
I want my server to automatically shutdown at 23:59 and startup at 8:00. The startup is handled through by bios but the shutdown is to be managed through cron. I thought I had this working, I actually swear I had it working because I thought the uptime command showed the appropriate uptime. I happened to be up and was streaming a movie from my server when at the time it should've shutdown it actually just restarted. If I run the shutdown -h now command by itself it works well but the scheduled command just restarts the server. Here is the what is shown when I enter crontab -e.
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Jan 29, 2011
I have added some executable scripts to /etc/cron.daily but don't get the stdout/stderr output from them as mail (or anywhere else I have found). At least one of them is running (because I can see that it has added a file to the disk).
The peculiar thing is that I do get the output from /etc/cron.daily/0logwatch (part of the logwatch package) as an email each day.
The MAILTO line in /etc/crontab is "MAILTO=root" (unchanged from default). Same for /etc/anacrontab.
I do have an alias at the end of /etc/aliases which redirects root's mail to my own account, but this alias works fine for mail I send manually. (It also appears to work fine for the output from the file /etc/cron.daily/0logwatch.)
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Feb 5, 2011
Recently I installed vncserver (tigervnc) on my desktop. Ever since my computer refuses to shutdown normally. At shutdown the following message pops up: Quote: System policy prevents stopping the system when other users are logged in Then I have to enter the root password to shutdown. If I stop vncserver before, the computer shuts down normally.
[Code]....
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Aug 28, 2009
Is there something that blocks cron from running a shutdown command? I'm doing a daily bounce to break an attack (I have thread about that in security forum), but I always end up doing it manually. The cron log shows it being fired off at the right time...but the server never bounces. I thought maybe I just missed it, but there is nothing in messages that shows the server restarting (unlike when i do it manually, you see the start-up logging).
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Apr 29, 2011
Can anyone tell me how i change the default domain name for cron?everything i cron runs it emails from and to user@com.com
this leaves me with a massive list of failed mails in postfix.i have mailto on my main crontab but i cant do it on all of them.
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Feb 25, 2010
It seems that cron is not upgrading my Ubuntu 8.04 LTS Server, no GUI installed. I changed /etc/crontab and watched apt running:
Code:
ps -A | grep apt
showed it for a long time,
Code:
sudo tcpdump tcp
showed communication with canonical sites,
but:
Code:
top
did not show any apt using CPU
[code].....
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Sep 19, 2010
I put in my cron entries to run my backup script which rsyncs my data to my 2nd drive, however on a hunch I checked my backup drive which mounts automatically via fstab and I realize it had not ran in a while. I checked cron and there were no entries for it. I got to wondering if I should ever be worried about a cron update coming down and over-writing my existing cron file with the backup entries in it to run.
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Feb 16, 2010
I have set up a cron in /var/spool/cron/root
*/15 * * * * /usr/bin/phplist.sh
I can see in /var/log/cron that it is running every 15 minutes but it has no effect. It is not doing the commands in the bash script.
If I run /usr/bin/phplist.sh right in the shell it works great.
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Feb 9, 2011
Is my vixie-cron broken? i have "0-59 * * * * root /usr/sbin/logrotate /etc/logrotate.conf" but it is not running in /etc/cron.d.
Code:
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Dec 10, 2010
I have installed a cluster computer with 10 nodes . The manufacturer is HP . All nodes and the master node have redhat enterprise linux installed in them . When I shutdown the nodes from the master terminal using "shutdown -h now" they get shutdown . But they dont get completely turned off . This issue bothers me when the power supply is given , all nodes boot up simultaneously generating a huge heat .
Thing to note : When we shutdown our PC they get completely turned off . When the power supply is given , a press on the Power On button is required to boot the system. But , why does it not happpen in the case of cluster? Is there any other way of completely turning off the nodes from the master terminal ?
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Apr 21, 2010
I create a shell file with different commands . I am able to execute it manually . Now I want to schedule this file hourly . For this where I place this file and where I configure for time .
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Oct 6, 2010
I can't seem to get a cron job to work on my Fedora 11 box. When I check the logs, cron is actually working. In my /etc/crontab I have an entry to run the cron job on my Moodle installation:
30 * * * * wget -q -O /dev/null http://moodle.name.name/moodle/admin/cron.php
when I run crontab -l it is not showing me anything, I am confused
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Feb 28, 2010
I would like to schedule a cron job to run on every first saturday of the month, so far all documentation that I have looked at, mentions only a weekly cron or a monthly cron based on the date. Is it possible to run a monthly cron based on the day of the week?
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Aug 12, 2010
How to schedule a job using cron that shouldn't run between working hrs 9am-5pm, while run in non working hrs every hour, every day of the month, month & week. I tried the following way, not sure I can use logical not operator(!).
crontab -e
0 !9-17 * * * /path/to/script/file
I guess other way is
0 17-8 * * * /path/to/script/file
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Dec 15, 2010
i have couple of question first when i m running my php script file named myindex.php and while its running in browser i add this code in putty to see if it shows my php script is running or not but i see nothing ps aux |grep myindex.php | grep -v grep
why i cant se if myindex.php is running or not with above command.
second how can i add a cron job to my php script, i know only through kloxo or cpanel.
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Jun 30, 2010
when my pc boots and shuts down my monitor goes into 'input out of range' mode for a bit between the gui and the text only phases of boot/shutdown.is there a way to fix this? or where to start troubleshooting?also, when it shuts down it hangs after coming back to the text only part
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Oct 30, 2009
Just installed Fedora 11. Like to setup cron job to update everthing on a regular basis. any examples?.
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Nov 15, 2010
I wish to run a cron job every half hour, where exactly do I put the job? The reason I am asking is that I am used to entering jobs into crontab, I am not used to using fedora and its cron layout.
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Nov 15, 2010
I have a Fedora 11 box and I am confused about cron, where exactly do I enter the cron jobs? For example, I have a job that needs to run every half hour.
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Nov 27, 2010
In my windows machine I have some txt files. I want run a script or command daily to get those file to my linux box using cron job.
Windows (192.168.1.5)
d:
ecords est.txt
to
Linux (192.168.1.
/data
I want to run that script in my linux box every day at 10.30 AM using cron job to get those files from windows to linux.
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May 28, 2010
I found (Red Hat Fedora Core 6 Server) a CRON entry for "backupmng" that has repeats at 1,16,31 and 46 minutes every hour of every day, 24/7.It is located at:/usr/local/psa/admin/sbin/backupmng >/dev/null 2>&1.
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Apr 22, 2010
I cannot locate shutdown log for Linux shutdown to check various activities carried out during shutdown. I can view Startup Log which is availble on console>Applications>System Tools>System Logs.
I have included Shutdown/Startup in dbora, so that Oracle 10gR2 Shutdown/Startup will be automated during OS Shutdown/Startup.
I want to check Shutdown log because Oracle Shutdown was not running, as from $ORACLE_HOME/shutdown.log contains no entries, where as startup log contains latest startup details.
That means here 2 issues are there. One, I want to locate OS Shutdown Log and the other being Why Oracle Shutdown not getting executed.
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Mar 23, 2010
I'm experiencing a problem with cron.hourly running mcelog.cron on Fedora 11:Quote:mcelog: warning: 18446744073709551600 bytes ignored in each recordmcelog: consider an updateI've read a dead end email thread here from February 2010 describing what I am seeing on Fedora here:Does anyone have any insight into this problem? This is relevant portion of strace(1)ing mcelog which shows /dev/mcelog is open()d and configured correctly:Quote:
open("/dev/mcelog", O_RDONLY) = 3
ioctl(3, MTRRIOC_SET_ENTRY, 0x7fff13129bac) = 0
ioctl(3, MTRRIOC_DEL_ENTRY, 0x7fff13129ba8) = 0
[code]...
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Apr 11, 2011
All my cron jobs are configured to email output to [URL] Text content comes through, just fine. I have several cron jobs that output HMTL, however cron's output email displays the html tags as-is as text, instead of html. example: <br> Anyone got lucky being able to send cron output emails in html format (either by configuring fedora or through command line)? I have tried the following command lines in fedora crontab manager with no luck
TRY 1
CONTENT_TYPE=text/html /usr/bin/php /full/path/myphp.php | mail -s 'email subject' myemail@mydomain.com
(cron executes, but sends email as a text email, not html email)
TRY 2
/usr/bin/php /full/path/myphp.php | mail -s 'email subject' myemail@mydomain.com
[code]...
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Sep 25, 2009
I cannot debug or resolve on a Fedora Core 8 machine. The problem exists in a Fedora 11 machine as well. I have a script that changes the default gw (I have 2 providers) if the link is down. The script runs very well when I call it from the terminal, however when I try to set a cron job to run it, it hangs in the middle of the script. I don't have any idea of what is happening, or how to debug but it seems to hang when running a command like: route add default gw [ip]
I can publish the script here, but it's fair an simple and the algorithm is:
- start
- Find out the current GW
- Find out the alternative GW
- Ping the current GW and capture the result
- if we have a fail then change the default gw to the alternative Gw and send an email, else do nothing
- end
The cron job is run as root, so I don't think this is a rights problem.
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May 31, 2010
I have the following shell:
export PATH=/u01/app/oracle/product/10.2.0/db_2/bin:/usr/sbin:/usr/kerberos/bin:/usr/local/bin:/bin:/usr/bin
ftp -u -v -n -i > /bk01/exports/FTP_OUTPUT.LOG <<EOF
open 197.0.0.78
user orabackup orabackup
cd /media/disco/BK_Oracle
bin
put FILE00001.LOG
put FILE00001.DMP
quit
EOF
Executing the shell from command line, the output is:
Connected to 197.0.0.78.
220 Bienvenido al servicio FTP del servidor backup.
530 Please login with USER and PASS.
530 Please login with USER and PASS.
331 Please specify the password.
230 Login successful.
250 Directory successfully changed.
200 Switching to Binary mode.
local: EXPO_APOT10G_20100531.LOG remote: EXPO_APOT10G_20100531.LOG 227 Entering Passive Mode (197,0,0,78,200,162) 150 Ok to send data. 226 File receive OK. 127498 bytes sent in 0.0022 seconds (5.7e+04 Kbytes/s)
local: EXPO_APOT10G_20100531.DMP remote: EXPO_APOT10G_20100531.DMP
227 Entering Passive Mode (197,0,0,78,175,141) 150 Ok to send data. 226 File receive OK. 458190848 bytes sent in 6.1 seconds (7.3e+04 Kbytes/s)
221 Goodbye.
Executing the shell from cron, the output is:
Connected to 197.0.0.78 (197.0.0.7.
220 Bienvenido al servicio FTP del servidor backup.
331 Please specify the password.
230 Login successful.
250 Directory successfully changed.
200 Switching to Binary mode.
local: EXPO_APOT10G_20100531.LOG remote: EXPO_APOT10G_20100531.LOG
local: EXPO_APOT10G_20100531.DMP remote: EXPO_APOT10G_20100531.DMP
221 Goodbye.
Why from cron the output no show the statistics in red ...?
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Jan 16, 2010
i'm having a little issue with a small script i'm working on. It's a bash script that, amongst other things, checks the current playing song in Rhythmbox with "rhythmbox-client --print-playing". Now the thing is that if I run the script by hand it works perfectly, but when it's run by cron this part gives the following error:
Code:
(rhythmbox-client:9848): Rhythmbox-WARNING **: /bin/dbus-launch terminated abnormally with the following error: Autolaunch error: X11 initialization failed.It's running on my own cron (crontab -e) set to my user.
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