How to enable/disable services on boot up in Centos7/RHEL7

In Centos 7 and RHEL 7, the systemctl command added to manage all services.

How to install lsyncd on CentOS 7 / RHEL 7

lsyncd is an rsync-based tool that is used to sync or replicate files & directories locally and remotely.  It is sync changes or modification in a file and directory to the remote or local destination in a specific time interval.

How to install rsync utility in Centos 7

Rsync is open source software that used to synchronize files/folders from local to local computers and remote computers as well over SSH with compression and encrypted files.

How to use rsync utility in Centos 7

Rsync is open source software that used to synchronize files/folders from local to local computers and remote computers as well over SSH with compression and encrypted files.

How to analyze memory usage using SAR command

Sar command with option “-r” to generate memory usage report. %kbmemfree, %kbbuffers and %kbcached are the overall memory used including RAM & Swap. Its shows values at every interval or required time interval.

How to change default Kernel in CentOS 7

In Centos and RHEL 7 systems, the GRUB2 is the most common and default boot loader and grub2-mkconfig utility can use to make any changes in grub configuration.

How to configure proxy settings with user authentication in CentOS 7

Set the following proxy environment variables in CentOS server to use a proxy on the Linux command-line if the internet connection is behind a proxy:

How to configure proxy settings in CentOS 7

Set the following proxy environment variables in CentOS server to use a proxy on the Linux command-line if the internet connection is behind a proxy: