The Linux Juggernaut

If you are preparing for interviews for linux admin jobs you should be familiar with below concepts..

1) Port number of different servers {cat /etc/services}
2) Linux Installation(through FTP,HTTP,NFS)
3) Boot process
4) Diff b/w ext3 and ext2
5) RAID LEVELS and Selection of raid
6) backup methods
7) Package management such as Yum server
Kernel Tuning
9) IPTABLES
10) TCP WRAPPERS
11) DIFFERENT RUN LEVELS
12) USER AND GROUP MANAGEMENT
13) QUOTA SETTING(user and … Continue Reading

SAMBA(SMB server) is a file sharing server. Which is used to share files between Windows, Linux and Unix Systems. SMB(Server Message Block) is a proprietary protocol which is developed by Microsoft

Lets see how we can configure SAMBA in Linux.

Step1 : Create a directory where you want to keep data and share with other remote systems(either windows/Solaris/in fact any unix flavor etc).
#mkdir /share1

Step2 : Installing Samba server
#yum install samba… Continue Reading

This is a long time question in my mind. I used to try all sorts of commands to find what process are running by a service/user. The commands are as follows.

1.#ps -ef
2.#top

But none of these tools gives number of process run for an Application/User.

To serve this purpose there is a built-in command in Linux called pgrep(process grep). Let us have a look in to pgrep usage.

Syntax:
#pgrep application-name

Example:
# … Continue Reading

In this post I am going to teach How to use DIG and with examples.

DIG is one of the most important tool in debugging DNS server related issues.

Some points to be noted about DIG.

1.DIG full-form/abbreviation is Domain Information Groper

2.DIG can work on command line or as well in batch mode

3.DIG supports Internationalized Domain Name(IDN) convections too.

4.DIG is more advanced than older tools such as nslookup and … Continue Reading