Linux Keybindings

Linux Keybindings   Keybinding simply means mapping of a specific key combination to some action. We are already familiar with the best ever keybinding combination ever made – Control-c: to copy selected text… Continue reading →

Controlling sudo re-authentication

GEEKS !! Here is a small trick for sudo. Enforcing and controlling that on which sudo commands user is supposed to re-authenticate and which commands can be run without re-authenticating himself. One option… Continue reading →

Linux Kernel 3.12.3

NEW Linux Kernel 3.12.3 is available. Linux kernel 3.12.3 is yet another big release that introduces numerous updated drivers, many architecture improvements (AMR, PowerPC, s390, parisc, ARM64, avr32), some fixes for the CIFS… Continue reading →

Linux Interview Question

File required to modify for setting up kernel parameters permanent. Ans > /etc/sysctl.conf

Chage Command

GEEKS !! Here comes a small hack with date command and its excellent in applying password aging policies with chage command. Suppose you had been asked to enforce a account expiration date for a… Continue reading →

Linux Interview Question – uid#3

What is inode number? An inode is a data structure on a traditional Unix-style file system such as UFS or ext3 / ext4. An inode stores basic information about a regular file, directory, or… Continue reading →

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 →

Controlling mailbox and message size in postfix

GEEKS !! Here is today’s incident. Interesting one. So thought of sharing it. Its related to postfix mail server. I hope you still remember how to configure a basix postfix mail server from… Continue reading →

Top 5 female hackers

Recent Linux Placements