The Linux Juggernaut

Recently I have bought an USB hard-disk which is 2TB for $90 from US. And I have copied some English movies around 500GB from one of my friends Hard disk. Then when I am checking the content I found that some of the movies are repeated and that to with different names, in different folders etc. This made finding them difficult. So how to find all those files and deleted them if not required.  There … Continue Reading

Hi all,
From tomorrow on words we are planing to provide in depth knowledge base on many Howto’s related to Linux Files, folders, users and groups permissions. Some of the howto’s which we are going to present are as follows.

1. chmod (Changing file/folder permissions)
2. chgrp (Change group owner permissions)
   
3. chown(change user and group owner permissions)
4. umask(set the permission level)
5. SUID(Special UserID)
6. SGID(Special GroupID)
7. Sticky bit
8. SUID vs Sticky bit
9. SUID vs SGID.
   
10. Linux Filesystem

… Continue Reading

When you are configuring Apache-Aactive directory integration you may find this error. This is bit strange error, this type of errors will come when the LDAP URL is not mention properly. There may be a special character in the line which you coped from some file/doc/blog causing this issue.

If you see below lines both look same

AuthLDAPURL “ldap://server.example.com:3268/dc=example,dc=com?sAMAccountName?sub?(objectClass=*)”
AuthLDAPURL "ldap://server.example.com:3268/dc=example,dc=com?sAMAccountName?sub?(objectClass=*)"

But there is a hidden new line in first AuthLDAPURL line. so be careful … Continue Reading

Recently we got a requirement to configure a Sub-domain(sub-zone) record in DNS server.  Its little bit advanced concept but very much easy to configure. The most known records are as follows.

A record for Adding an IP address record

NS record for a Name Server record

PTR record for a pointer record( i.e. Reverse IP lookup record)

CNAME record for a Canonical name record(i.e. alias to a A record)

MX record for a Mail Exchange … Continue Reading

Q. I have a requirement to check whose accounts are expired in Linux machine and send a mail to root user about the accounts. How can i achieve this in Linux?

Ans : Here is the script to check the account expires of the users in Linux

#Created on:09-02-2010
#Last modified:02-05-2010
#Purpose:To check the user account status in Linux
#Author:Surendra Kumar Anne
#The below command will grep all the users in shadow file
#whose expiry … Continue Reading

Q. I have an NRG image file which is created from my nero writing software, how can i convert it to ISO formateso that I can mount it under linux?

Ans : .nrg files can be converted by using nrg2iso command. This is not installed by default in Linux, so you have to install it from repos.

In Ubuntu/Debain

#apt-get install nrg2iso

In Redhat/CentOS/Fedora

#yum install nrg2iso

Once the installation is done execute … Continue Reading