How to log iptables messages in a different log file
Follow below link to send your log messages to remote server using tcp or udp ports [How to send log messages using rsyslog to remote server using tcp and udp
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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
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 ``` #
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
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
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
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
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
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]({{< relref "how-to-redirect-specific-log-messages/index.md" >}}) from /var/log/messages so that your messages file is not filled up
Linux Interview General Questions with Answers
**Explain in detail the Linux booting procedure** * When a Linux machine is powered on BIOS loads up first. It will prompt you to select boot device which can be