Category: Linux tutorials

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working with Linux runlevels

When the system boots up, it queries for the default runlevel, which is defined in  the /etc/inittab file. When that default runlevel is located, the system boots into that particular runlevel. The different runlevels are essentially “states,” which allow services to be started or stopped depending...

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Configruing NTP Services in Linux ( RHEL5/6)

The NTP service is responsible for maintaining the system time, which is highly important in any  environment because so many things rely on time (logs, error messages, applications, and so on). There are a few different roles that your system can have when using NTP. They...

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How to add Linux hosts to Nagios server for monitoring

Nagios is free and open source application that is used for monitoring the complete It infrastructure i.e. computers, firewalls, printers, networks etc. It provides real time updates of usage of various resources like ram, hdd or cpu usage of the systems & also provides alerts when...

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