I can't use cron on server. But on the same server i can use screen. Is there any way (any program) to run something like cron in the screen session? Or any solution for that problem.
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when i try to access synaptic package manager and update manager or ububtu software center. the screen will flash and be gone
View 7 Replies View RelatedI'm trying to setup a cron with screen. the purpose of running screen is because i want to resume to see the status of the job while it is running. anyone can enlighten me how i should setup my cron. I've tested with
00 14 * * * screen [command]
but the cron doesn't create a new screen.
I am trying to display a text using crontab. My settings :
*/2 * * * * /bin/echo "hello"
This setting sends a mail to the user, instead of displaying on the screen. Now tried changing the setting to:
*/2 * * * * /bin/echo "hello" > /dev/tty1
Now I can see the text on the screen, but this setting comes with a catch. What would happen if the user changes the terminal. for instance if he gets into tty2, he wont have write access on tty1. So the user gets a mail saying "permission denied". Is there any way that I can force the user to use a particular terminal or can a cron job be set in a way such that the user would get the text irrespective of the terminal he logs in.
i got a bash script which can remind me my friends' birthday ,and i want run it as a cron job everyday,but the linux just emails me the output.Now my question is how to how to redirect the cron output to screen.
PS: when i run the script mannually ,it runs very well,so my script is good. And i have tried :
1.30 8 * * * root /home/birth.sh >/dev/console
it shows nothing
2. 30 8 * * * root /home/birth.sh >/dev/tty1
the same as 1
3. 30 8 * * * root /home/birth.sh >/dev/tty
it shows:/bin/sh: cannot create /dev/tty: No such device or address
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.
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.)
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].....
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.
View 2 Replies View RelatedI 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.
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:
I do not have a webcam yet, but would like to set certain video files I have to be played as my 'streaming video content' from a 'virtual' webcam.
View 6 Replies View RelatedCould not do simulate: nautilus-sendto-2.28.4-1.fc13.i686 requires libedataserver-1.2.so.11
gnome-panel-2.30.0-1.fc13.i686 requires libedataserver-1.2.so.11
empathy-2.30.1.1-1.fc13.i686 requires libedataserver-1.2.so.11 : Success - empty transaction
How to get rid of the following error I've been receiving from Yum. I'm fairly new to Fedora. The following message appears when Add/Remove Software is launched. It also pops up periodically in the notification window.
could not do simulate: Traceback (most recent call last):
File "/usr/share/PackageKit/helpers/yum/yumBackend.py", line 3270, in __init__
self.repos.confirm_func = self._repo_gpg_confirm
File "/usr/lib/python2.6/site-packages/yum/__init__.py", line 823, in <lambda>
repos = property(fget=lambda self: self._getRepos(),
File "/usr/lib/python2.6/site-packages/yum/__init__.py", line 551, in _getRepos
prerepoconf = self.prerepoconf
AttributeError: 'PackageKitYumBase' object has no attribute 'prerepoconf'
how to simulate mobile agents with NS2 (docs , code ......)
View 2 Replies View RelatedI wrote software which access and reads a serial device. I would like to test this software on my computer without loop-wiring or without a second computer.
How could I use pty's to simulate a serial device?
Actually I would like to temporary replace the /dev/ttyS1 file by one end of the pty. How could I do this? Is there a command to create a pty pair?
How simulate unix kernel in c++..or give me a link....
View 2 Replies View RelatedWhen I drink tea, the water splashed on my keyboard. It didn't cause any problems until a few mins ago. Now my Enter and right hand side shift key don't function any more (The new line in this text is copied from other thread).
So I would like to know how can I simulate an enter key press so that e.g. a command can be executed in terminal. Because I have some source code uncommitted, I want them at least get committed first.
I'm trying to save the output of the script I wanna run but for some reason I cant manage to do it with "script.sh > Output_4.txt"
The thing is that the script was already run and it extracted some directories so when I try to run it again (to save the log to a Output_4.txt) bash says (see screen-capture) and of course the log's empty!!!!
For backup and pre-functionality purposes, I need to simulate a VirtualHost in my Fedora (14) machine. I found some interesting links to carry out that process but with an IP fix.So, how can I simulate a VH through a localhost with a dynamic IP?
View 2 Replies View RelatedI have ack-grep installed on my local machine, and find it indispensable for quickly 'acking' through a codebase when debugging. However, on my cheap shared hosting, there is no ack-grep. One of the testimonials on betterthangrep.com mentions a
Rube Goldberg mess of find/grep/xargs which sounds like what I need, but coming from the opposite direction.
I want to simulate a bad block or sector on a drive or even a virtual drive image to test my data recovery distro. I wish I would have bookmarked when I read about it before. It was some type of low level command, I remember something about scsi subsystem or kernel thingabob.
View 3 Replies View RelatedI have a G15v1. After going through hoops and loops to get it working only to discover that you only needed to install g15daemon through the Ubuntu Software Center, I found myself with one big problem. I migrated from windows just now, and there, I had my macro keys(the extra ones) bound to CTRL+W, CTRL+T and to a simulated mouse-wheel scroll so I could navigate the web more easily. How would I go about doing that? I figured, if I used the System->Preferences->Keyboard Shortcuts thingy and bound my key, in my case XF86Launch5, to a command similar to "simulate keypress CTRL+W"(I know it's totally wrong, just to give you an idea), I might be able to get it working again. Only problem is, I can't find anything like that. Any of you has any clue about it? I googled but I only find C++/Java/coding related results, which are not exactly what I need to do.
View 4 Replies View RelatedAfter some tests I found that some USB Bluetooth Dongles errors, only are recoverable if the USB is unplugged an then plugged again. Is there some way to simulate that a USB device is unplugged and re-plugged?
View 5 Replies View RelatedI need to simulate a 500Mbps link with a 100ms delay and a loss probability of 0.0001% on an ethernet link between two gigabit ethernet cards...I tryed to use these commands:
# tc qdisc add dev lo root handle 1:0 netem delay 100ms loss 0.0001
# tc qdisc add dev lo parent 1:1 handle 10: tbf rate 500Mbit buffer XXXX limit YYYYY
But during some simulation throughputs are very low ( 190Kbps....210Kbps....) for different values of XXXX and YYYY.... (I don't want that the loss probability is caused by the buffer and the limit value but only by the loss probability setted on netem...)
I have a program that receive user input.
I want to run this program automatically without user interaction, and in order to do that I need to simulate key events.
How can I do such a thing?
The program I am running is partly java and partly shell.
The shell part is easily done by using:
./prog.sh <parameters (Parameters being a file containing parameters)
But the java doesn't work similarly.
I need to simulate dijsktra's algorithm using network animator of ns2. how to write a tcl script for my code. This tcl script runs the dijsktra code and simulates its running on network animator.
View 1 Replies View RelatedI have a computer with no floppy drive (x64 ubuntu lucid installed) I have a program (wine windows xp) that will only save data and export data from/to a floppy drive. I found information on setting up an emulated floppy drive. i.e.
sudo dd bs=512 count=2880 if=/dev/zero of=imagefile.img
sudo mkfs.msdos imagefile.img
sudo mount imagefile.img /media/floppy -o loop
I modified the winecfg to include under the drive section A: /media/floppy. Problem is I cannot write to the drive as a normal user. I have tried everything I know but only root can read write to the drive. Is there someway to set up this emulated floppy to allow me as a user to write and read contents.
Is there any way to simulate analogue and digital(DVB) cards during development with MythTV so I am able to do some basic testing on a separate computer without disturbing my real MythTV server ?
i was trying to figure out a way to write my own linux commands.. in fact i wanted to write a shell script to simulate an already existed linux commands like 'cd','ls' and'adduser'i just dont know the language of scriptting and even doesnt know the steps to make a script
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