Most of the peoples are familiar with the top command line utility to cross-verify the core information of CPU or memory, but htop linux command is smart alternative for top linux command.

Htop offers you:

• Shows you usage per CPU. ( Multi-core layout )
• User friendly text graphical look of all CPU’s in terms of percentage.
• User friendly text graphical look of memory & swap size along with used/available size.. Continue reading →

Steps to configure VNC server on CentOS:

//First verify version & redhat-release by following command:

[root@centos ~]# cat /proc/version
[root@centos ~]# cat /etc/redhat-release

 

//Install required packages: Continue reading →

Steps to configure VNC server on CentOS:

//First verify version & redhat-release by following command:
[root@centos ~]# cat /proc/version
[root@centos ~]# cat /etc/redhat-release

//Install required packages:

[root@centos ~]# yum -y install tigervnc-server xorg*
[root@centos ~]# yum groupinstall "General Purpose Desktop" –y Continue reading →

Steps to increase swap memory size:

Ensure swap memory size by issuing the following command.
[root@centos ~]# free -m
total used free shared buffers cached
Mem: 483 475 7 0 1 283
-/+ buffers/cache: 190 292
Swap: 511 242 269 Continue reading →

For that you need to install “screen” by issuing following command:

[root@centos ~]# yum install screen* -y
OR
Install “screen” via rpm package according to your linux version.

 

Create new screen by issuing following command:
[root@centos ~]# screen -S Terminal_Share_demo Continue reading →

We can manually free up the memory cache with the following simple command:

//Find exact memory utilization by issuing following command:

[root@demoServer ~]# free -m
total used free shared buffers cached
Mem: 7827 7566 261 0 97 6585
-/+ buffers/cache: 883 6944
Swap: 4999 12 4987 Continue reading →