Explains how to use netstat command to display current connections and find out if your server is under DoS attack or not.
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.
Installing software from a source code is common practice in Linux and Unix world. Some time this is preferred method because it gives all power and flexibility you need to optimize your software such as MySQL, PHP, Apache and more. However, uninstalling files installed from a source code tar ball can be a big headache.
Two methods can be used to uninstall files:
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Yes, I know we can use the uptime command to find out the system load average. The uptime command displays the current time, the length of time the system has been up, the number of users, and the load average of the system over the last 1, 5, and 15 minutes. However, if you try to use the 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 type the uptime command: