The Linux Juggernaut

This is a small post on improving your productivity when working with BASH shell. BASH shell is having many inbuilt capabilities such as history, command chaining and BASH shortcut. In this post we will see what are BASH shortcuts and their usage.

Ctrl+a
Bring back the courser to start of the bash prompt


Ctrl+c
Cancel the command before executing it


Ctrl+d
Logout from the Shell


Ctrl+e
Move the courser to end of the command


Ctrl+l
Clear the screen


Ctrl+r





… Continue Reading

What is a sticky Bit and how to set it in Linux?

This is next to SGID in our ongoing File and Folder permissions in Linux. We already discussed about CHMOD, UMASK, CHOWN, CHGRP SGID and SUID File and folder permissions etc in our previous posts. In this post we will see

What is Sticky Bit?

Why we require Sticky Bit?

Where we are going to implement Sticky Bit?

How … Continue Reading

We thought of writing this post a long time back, today time has come. Recently we bought Reliance Net-connect device for browsing INTERNET on the go. As I am taking long leaves in this month. Here are the steps how we configured reliance net-connect on Ubuntu 11.04 which will be same for all the Ubuntu versions(10.10, 10.04, 9.10, 9.04)

Lets start with the configuration. I have HUAWEI MODLE NUMBER HUAWEI EC1262

Step1: Install the wvdail … Continue Reading

In our previous post we saw how to use Basic regular expression along with grep to search for words and played across different basic regular expressions. In this post we will see how to use extended regular expressions to increase the power of grep command even better than Basic regular expression.

Extended regular expressions:

+ --Match one or more occurrences of previous character.

| -- Match Either character

? – Match 0 or 1 occurrence … Continue Reading

01 Jan 1970 is epoch or Unix time or posix time start date, its similar to Before Christ(BC) and After Death(AD). This is the time elapsed from Midnight Jan 01 1970 in UTC time when Unix I is first invented.  The Unix time is zero at this time and it start ticking from that time to till date in seconds. So our Linux machines too kept this as standard time for them. Present Unix time … Continue Reading

SSH communication works on two principles
1)Communication should be done in encrypted channel
2)This encryption can be done by exchanging a PUBLIC KEY between two parties and a PRIVATE KEY for decrypting the data.
So how SSH communicate works?
When SSH package is installed on any machine a PUBLIC KEY and A PRIVATE KEY will be generated or installed by default on it.
Lets explain this with an example.
I have two machines … Continue Reading