I'm having serious problems running cron. I want to create midnight backups of my files on my unix server and there is something wrong with cron.
Here is what I do:
First I saw that cron is running (while logged on as root) by typing "ps -aedf|grep cron" and I noticed that there is 1 instance... (4 Replies)
Hi, I am having a few problems with cron.
I have created a shell script (to rotate www logs - this works) and then did the following (as root)
#crontab -e
2 0 * * 3 /cron_scripts/wwwlogs.sh
?
w
?
q
#
crontab -l
entry not shown e.g. it did not show what I had just writern
I then... (6 Replies)
Hi there,
this time a have a other problem :)
i will start a script over the cron.
if i start the script manual (per command) it works without any problems, but over the cron it doesent work.
my cron looks like this:
26 15 * * * /path/scriptname.sh 2> /path/error.log
there is no... (3 Replies)
Hi,
I've created a cron job for a script with a rsync command in it. The script is named pull.sh and contains the following line :
What it is supposed to do is pull backup files from the production server of my company to my local server. It should also generate the log file (output.log)... (1 Reply)
Dear Friends,
I am running a script which runs a select query from a sybase table and outputs the result (1 row) into a .txt file in unix. When I run the script manually it behaves normally. However it doesnt run in crontab.
#!/usr/bin/ksh
. /opt/ivb/config/set_env
... (1 Reply)
how to store a date into file?
and how we can access date from the file?
---------- Post updated at 06:09 AM ---------- Previous update was at 06:08 AM ----------
how we can store date in file? (1 Reply)
Hi all!!
I have a nerve-wracking concept (probably for me!!) which is not understood. My crontab entry looks this way.
33 09 22 3 * /home/myexp.sh "Bgp4 ALL" >/dev/null 2>&1
But cron gets started occasionally. Sometimes it does. Sometimes it does not. And sometimes it hangs in the middle (I... (1 Reply)
Hi friends,
today i created a cron job , registered the crontab file associated but dont know why the cron is not getting executed at the right time.??
content of Crontab file :
21 15 * * * /subrat/myt
i wanted to execute the script myt on 15:21 PM of everyday.
the script myt... (2 Replies)
I am trying to setup a cron that runs a script to update my ip for my domain name every time I reboot and checks if my ip changes every 5 minutes and if it does then I update it. I am running Ubuntu server 12.04.
The file /etc/cron.d/ipupdate contains
#
#
# Run ipupdate
#
#
/5 * ... (3 Replies)
Good evening, ive got this cron to be run:
if i run this manually it doesnt work,it takes me to the prompt again
/export/app/CO/opge/scr/Informe_parametros_colombia.ksh >/dev/null 2>&1
here is the code fragment:
coopge@coopge: opge PRODUCCION>more... (1 Reply)
Discussion started by: alexcol
1 Replies
LEARN ABOUT XFREE86
pivot_root
PIVOT_ROOT(8) System Administration PIVOT_ROOT(8)NAME
pivot_root - change the root filesystem
SYNOPSIS
pivot_root new_root put_old
DESCRIPTION
pivot_root moves the root file system of the current process to the directory put_old and makes new_root the new root file system. Since
pivot_root(8) simply calls pivot_root(2), we refer to the man page of the latter for further details.
Note that, depending on the implementation of pivot_root, root and cwd of the caller may or may not change. The following is a sequence for
invoking pivot_root that works in either case, assuming that pivot_root and chroot are in the current PATH:
cd new_root
pivot_root . put_old
exec chroot . command
Note that chroot must be available under the old root and under the new root, because pivot_root may or may not have implicitly changed the
root directory of the shell.
Note that exec chroot changes the running executable, which is necessary if the old root directory should be unmounted afterwards. Also
note that standard input, output, and error may still point to a device on the old root file system, keeping it busy. They can easily be
changed when invoking chroot (see below; note the absence of leading slashes to make it work whether pivot_root has changed the shell's
root or not).
OPTIONS -V, --version
Display version information and exit.
-h, --help
Display help text and exit.
EXAMPLES
Change the root file system to /dev/hda1 from an interactive shell:
mount /dev/hda1 /new-root
cd /new-root
pivot_root . old-root
exec chroot . sh <dev/console >dev/console 2>&1
umount /old-root
Mount the new root file system over NFS from 10.0.0.1:/my_root and run init:
ifconfig lo 127.0.0.1 up # for portmap
# configure Ethernet or such
portmap # for lockd (implicitly started by mount)
mount -o ro 10.0.0.1:/my_root /mnt
killall portmap # portmap keeps old root busy
cd /mnt
pivot_root . old_root
exec chroot . sh -c 'umount /old_root; exec /sbin/init'
<dev/console >dev/console 2>&1
SEE ALSO chroot(1), pivot_root(2), mount(8), switch_root(8), umount(8)AVAILABILITY
The pivot_root command is part of the util-linux package and is available from https://www.kernel.org/pub/linux/utils/util-linux/.
util-linux August 2011 PIVOT_ROOT(8)