Explains how to use netstat command to display current connections and find out if your server is under DoS attack or not.
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awk command
Reading an IP address in shell script required many time. However, different Linux distribution stores IP address in different files. If you are looking to run script under different UNIX like OSes such as Solaris or FreeBSD then you need to use the ifconfig command. The ifconfig command is not just used to configure a network interface, but it can be use to obtained information such as network IP, netmask and much more.
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Installing software from a source code is common practice in UNIX and Linux world. Some time this is preferred method because it gives all power and flexibility you need to optimize your software such as MySQL, PHP, and Apache etc. However, uninstalling files installed from a source code tar ball is a big headache. Two [...]
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Yes, I know we can use uptime command to find out system load average. If you try to use uptime command in script, you know how difficult it is to get correct load average. As the time since the last, reboot moves from minutes, to hours, and an even day after system rebooted. Just time [...]
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