What is swappiness and how do we change its value?
It is a feature in Linux which controls the degree to which the kernel prefers to swap in the procedure of freeing memory. It can be set to values on a scale from 0 to
Linux
What are the s and k scripts in the etc rcx.d directories?
To understand this you need to have a brief knowledge on the booting procedure of Linux machine. Running all the scripts under /etc/rc.d is the last step of successful booting a Linux OS. As per
How to check all the currently running services in Linux
To find the status of any single service # service vsftpd status vsftpd (pid 5909) is running... To get the status of all the running services # service --status-all | grep running acpid (pid 5310)
How to auto start service after reboot in Red Hat Linux?
You can run the below command to auto start the service after reboot # chkconfig service_name on But the above command will enable the service only for the current run level so I always prefer
What is Virtual memory, paging and swap space ?
Swapping A process normally runs on physical memory where the memory is divided into sets of pages. A page is a 4kb area of memory and is the basic unit of memory with which both
Interview Questions on Linux Servers with Answers
How can you create a password less connection between multiple Linux machine? To create a password less authentication we need to use RSA or DSA key authentication. RSA and DSA are used as an algorithm
What is the difference between DNS A record and CNAME record ?
A record It is the Address records also known as host records Points to the IP address reflecting the domain Used for forward lookup of any domain name For example: Our website is configured on
Tutorial for SYSLOG with Examples in Red Hat Linux
I have written another article with step by step instructions to redirect specific messages to different a log file from /var/log/messages so that your messages file is not filled up with unwanted eventsSyslog is one