For example, if the server (CentOS) has PHP 5.2.6 installed and has added a third party repository that provides both PHP 5.2.12 and PHP 5.3.1. PHP 5.2.12 and PHP 5.3.1 are the latest versions for …

I have a cron job that needs to run every 10 minutes, but should not be run for an hour each night (from 5 to 6am) while the system is down for a backup. As I understand it the following syntax …

Good day to you. I know there's some variations of my question here, but they are a bit different I assure you. We use terminal servers that our admins connect to and then establish ssh …

I get a lot of SSH connection attempt from different IP on my server (with different username). 1 to 5 per seconds. It look like a brute force attack. What can I do to prevent that? Block the IP? …

We've two nodes running heartbeat/drbd, and one of the services we're using is subversion. What I want to know is: is it safe to run svnserve on both nodes all the time, or should it only run on the …

Hi, I'm running a RoR web application on a dual core AMD Athlon 4450e server w/ 8GB RAM and Ubuntu. It's doing alright, getting spikes up to 320 dynamic requests per minute, it's also handling all …

Is there an option for linux top command where i can filter processes by name? For example, I only want to monitor python processes (there are several of them), and I'd like to do something like top …

How to give read/write permission to FTP (vsftpd) in linux (RHEL 5) server ( Client Windows ) ? How can i do if i want to give write permission for specific folder ?

I getting this message whenever i try to download software from in ftp (linux,RHEL5) server I am using this ftp for LAN only The error message as follows Here i attached image as i get from cmd …

For some reason at&t's smtp server, atlsmtp.cingularme.net is dropping messages coming from our SMTP server. I would like to contact their sysadmin to see why that is happening. However, I can't …

Hi Guys, For whatever reason, spammers found a way to relay mail through a side-system. The exploit has already been addressed. The problem is that I had massive amount of emails in my …

Hi, We're running Bind as a Caching-Nameserver and these are the 3 rules on our setup to handle the DNS functionality: iptables -A INPUT -s $OUR_NETWORK -p udp --destination-port 53 -j ACCEPT …

Is there a way to reserve a specific amount of memory for a specific service/process? I would like to guarantee that OpenSSH always has enough memory available to it that it can accept a new SSH …

I've launched something that took lots of memory and now everything lags a lot. I guess all applications' memory has gone to swap in order to free some space for the memory-intensive process, and now …

On my Linode sudo netstat -tulp gives me: Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 *:ssh *:* LISTEN 2030/sshd …