Tag Archive: rhcss india

Linux Kernel Numbering

How do Linux Versions Work? At any given time, there are several “stable” versions of Linux, and one “development” version. Linux kernel numbering convention. Each version has three numbers, i.e., X.Y.Z. The “X”… Continue reading

Access Control List

GEEKS !! I know you all have learned and mastered Access Control List (acl) using getfacl and setfacl during your RHCE Training days. Even those who had done RHCSS Training had also used it to great extend.… Continue reading

Udev Rule-Blocking Usb Storage

GEEKS !! Here comes a very interesting tip / hack on Linux. Here is how we can block any (read any) USB storage device connecting to your Linux Box. There are couple of… Continue reading

Useradd Command Defaults

GEEKS !! You are using useradd command since your early Red Hat Linux Training days create new user accounts on Linux machines. Using useradd command is very is simple. Just give username as its argument… Continue reading

Apache Modes

GEEKS !! You had configured Apache server during your RHCE Training and your RHCSS Training, as its a integral part of Red Hat Linux Training. I know you know Apache‬. You know the… Continue reading

Linux Processes

GEEKS !! Though you had studied about processes in your RHCE Training and RHCSS Training. Many times students ask what is a ‪daemon process and how it is different from other processes of ‪Linux. So here… Continue reading

vim editor

GEEKS !! Welcome Monday, seems to be sarcastic.  But here comes a very small tip on vim editor or ‪vi editor on ‪Linux. You all are using vim since your early days of exploration with Linux, like… Continue reading

User Profiles

GEEKS !! Though you are doing ‎RHCE and had learned this during your Red Hat Linux Training. But, here are some points to remember regarding User Profiles on Linux Box: 1. User Profiles is the… Continue reading

Deep inside /etc/resolv.conf – a video

Video by Network NUTS. Looks deep inside /etc/resolv.conf file. Explains the parameters inside the file. How different malwares can effect the file. Also specifies that how DNS applications like nslookup, dig etc uses… Continue reading

sysctl – runtime kernel options

GEEKS !! Here goes a problem. Something happened on my Linux machine and I am not able to execute … say .. #sysctl command, correctly Hope you remember this command and your #rhce training days. Now I… Continue reading