How to print Number of Processing Units - nproc

The nproc command just prints out the number of processing units available. Note that the number of processing units might not always be the same as number of cores.

How to change the SSH Port in Linux distribution

We can change the default SSH port in Linux distribution as an added security concerns.

How to install and use tcpdump command on Centos7/RHEL7

TCPDump is a command line packet sniffer/ packet analyzer tool which used to capture or filter TCP/IP packets that received or transferred over a network on a specific interface.

Nagios Plugins: Can’t locate utils.pm in @INC

In nagios plugins written in perl, you got the following error while trying to use a nagios.

Error: Table is marked as crashed and should be repaired

If you are getting the following error message:

How to Install SeedDMS on RHEL/Centos 7

SeedDMS is a very useful open source document management system. Its features are quite powerful, easy to use, but unfortunately lack of documentation. To install SeedDMS we need to install first a couple of packages in our RHEL/Centos 7.

How to create new SVN repository

SVN repository creation is a simple task. The svnadmin utility that comes with subversion provides a subcommand svnadmin create for creating the new SVN repository.

Environment:

 The Subversion repository is already configured and the SVNParentPath is /var/www/html/

Create a Repository:

[root@ linuxcnf ~]# cd /var/www/html/ [root@ linuxcnf html]# mkdir testrepo [root@ linuxcnf html]# svnadmin create testrepo [root@ linuxcnf html]# chown apache.apache -R testrepo

Now you can access the new created repository using server URL.

netstat Command not found on CentOS 7 / RHEL 7

netstat is a command line utility to check the network connection, configuration and activity on a Linux machines.