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Welcome to gnulinuxclub
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Welcome to the gnulinux club!
This space will provide you all that you need to know regarding Gnu/Linux and free software. The aim is to cater to the needs of all GNU/Linux users ranging from Newbies to Experts.
There are many sections; but the noticeable features are sections for Newbies and Corporates apart from common help and news !

  This shows the seriousness of the gnulinuxclub to deal with practical, implementational as well as theoretical issues that intrigue and amuse users.

Below you can get the intro to help articles/tips from gnulinuxclub

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How to comment all lines in VI editor ?
Aaj Ka Tip
How to comment all lines in VI editor ?

This can be done with a using a command like 'search and replace'

1.Open the file in 'vi' editor.
2.Press Escape and type :1,$s/^/##/g
3.Press Enter

1,$s/^/##/g can be broken down as
1: To start from 1st line
$s :To end at the last line
/^ : Search for the start of the line
/##:Replace with ##
/g: Replace all occurrences

contributed by : Pratik Shah
Search and delete files in Unix
Aaj Ka Tip
This is a useful tip to find and remove some files by searching recursively in a directory and sub directories

This will list down all the *.tmp/*.log files
 find . -type f -name "*.tmp" -exec echo {} \;
 find . -type f -name "*.log" -exec echo {} \;


This will delete down all the *.tmp/*.log files
 find . -type f -name "*.tmp" -exec rm {} \;
 find . -type f -name "*.log" -exec rm {} \;


It will be better to list the files first and then delete them, so that we do not miss out any important file
Monitoring Servers over Network
Aaj Ka Tip
Monitoring Network servers becomes a tiresome job.To ease out the process a software can be deployed on the servers to monitor them.

Nagios (http://www.nagios.org/) is a usefull monitoring tool , the features include
  • Monitoring of network services (SMTP, POP3, HTTP, NNTP, PING, etc.)
  • Monitoring of host resources (processor load, disk usage, etc.)
  • Simple plugin design that allows users to easily develop their own service checks
  • Parallelized service checks
Checkout the site:http://www.nagios.org/ for more details

Get Hostname from IP address.
Aaj Ka Tip

To get the hostname from the IP address.

The simplest way is to use the "host" utility provided by Gnu/Linux.

Just run

host <IP address> <nameserver>

This will query the name server and provide you with the hostname of the IP address.By default it will query the nameserver listed in the /etc/resolv.conf file.

Starting with Ubuntu Linux 7.10
Aaj Ka Tip
Starting with Ubuntu Linux 7.10

Its advisable to get a proper internet connection as this will save you from lot of hassles.
Once ubuntu is installed,work on the following points

1. gstreamer plugins for support of mp3/mpeg and other multimedia files
2. icedtea-java7-plugin package to have support for Java in browsers like firefox and mozilla
3. vlc player to play all kind of files
Read more...
: bad interpreter: No such file or directory
Aaj Ka Tip
: bad interpreter: No such file or directory

The above error is reported when trying to execute some script at the Unix/Linux shell.

If the file has been edited on a Windows machine it can sometimes Add CR/LF (VM) characters on the end of each line, so #!/bin/sh becomes #!/bin/shVM and as the ctrl-v/ctrl-m characters are special, and hidden by default on most editors,
Read more...



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