linux server

Recently updated/posted Linux and UNIX FAQ: => Boot Ubuntu Linux into Rescue mode to fix system – How do I boot my Ubuntu Linux server into Rescue mode to fix system? => Unable to create installation source – Add directories into YaST as an installation source – I have created my own patch files on […]

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The iftop command listens to network traffic on a named network interface, or on the first interface it can find which looks like an external interface if none is specified, and displays a table of current bandwidth usage by pairs of hosts. iftop is a perfect tool for remote Linux server over ssh session.

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Iptables has a special module called owner (ipt_owner), which is attempts to match various characteristics of the packet creator, for locally generated packets. It is valid in the OUTPUT and POSTROUTING chains.

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PHP4 or PHP5 do not have any problem to execute php3 files. The only problem is you need to force PHP4 or PHP5 to understand .php3 file extension as a php script.

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You need to use the sudo command to grant a permission to other users to shutdown your server. The sudo command allows a permitted user to execute a command as the superuser or another user, as specified in the /etc/sudoers file. Login as a root user and type the visudo command to edit the sudoers file.

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Have you ever wondered why shutdown account exists on Linux server, especially under Red Hat Enterprise Linux distribution?

The answer is quite simple – shutdown account can shutdown server. Here is how you can enable the shutdown account:

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