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I was wondering if it was possible to tell cron to not execute any cron jobs for a couple hours ?
As shannonman mentioned, you can just stop the service and start it again when required.
Stop cron service
$ sudo /etc/init.d/cron stop
Start cron service
$ sudo /etc/init.d/cron start
Reference
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I was planning to use a windows service to write a file periodically with c# 4.0. Are there any other options to do this?
You could use a console application, and the Windows Task Scheduler to execute your application on a periodic schedule. This would allow you to change your schedule easily, after deployment.
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I then get that the hard limit has become 1..is there an easy way to "reset what i did"? This is a server I have logged onto via ssh.
Log out and log back in again.
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My Ubuntu 10.10 computer is in an intranet. If I don't specify server's IP in /etc/hosts, it takes a long time to connect and sometimes fails.
Do you know why?
As root edit “/etc/ssh/sshd_config” and add the line “UseDNS no“.
executing the command
sudo echo "UseDNS no" >> /etc/ssh/sshd_config
This might help you if this is the reason for your slow connection issue.
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Does Cron come preinstalled on the EC2 linux instances, or do I have to install it separately from yum or anything?
This depends completely on the instance you start from. Most if not all the ones I have used tend to have it, but if you are using one that doesn't have it, just install it ;-)
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I have several cron jobs (calling my PHP scripts via curl) in the background that are running. I'm trying to monitor their performance. Using top, I see a bunch of httpd commands -- but I have a feeling these do not represent the cron jobs (e.g. too many httpd exit for the cron tasks being called).
How can I know what the httpd processes are for sure? Are there any other tools I should be looking at to monitor my system?
What you want is to look in /proc/[pid]/status.
You can get a hierarchically overview about your running processes with ps efaux or pstree -A -p
Maybe that helps.