Linux Tutorials (12)

Password less SSH login to another server can be very useful when you want to configure a remote backup server or when migrating servers. For enabling this you need to have openSSH installed on the server. Here is a tutorial on how to configure password less SSH login to server ‘mars’ from server ‘earth’

1. Login to earth as root.

2. Run the command ssh-keygen -t rsa
If the key already exists you can either go to step 3 or you can generate a new key by overwriting existing key (see image). It would be better to overwrite the existing key if you did not generate it.




3. Change directory to /root/.ssh/

[email protected]:~# cd /root/.ssh/
[email protected]:~/.ssh#

4. Copy the contents of the file id_rsa.pub to the directory /root/.ssh/authorized_keys
scp -P id_rsa.pub [email protected]_server_IP:/root/.ssh/authorized_keys

5. You will be able to login to the remote server ‘mars’ by typing ssh [email protected]_server_IP -p without password nowRead more..

Your rating: None Average: 3.8 (13 votes)


Linux files systems work great. Especially ext3 is a mature file system and very robust. With journaling turned the filesystems stays consistent also on an unexpected power loss or system crash (wich normally never happens on linux  ) and you don’t need long disk checks to repair the file system in such a case. There is almost no disk fragmentation and a lot of more cool features … But the best linux feature is: if you remove a file or directory it’s gone. It’s not moved to trash, its not marked as deleted, there are no annoying messageboxes, it just does what you say. I love that!
But from time to time also experienced users make mistakes and you delete something wrong. As Murphy’s law says: “if anything can go wrong it will” and so you will not have a copy of the deleted files and the backup will be outdated. So what to do now?
I want to explain the procedure by using the problem I had as example.

How the trouble came up for me

As usual I was working on my Gentoo Linux laptop. I just wanted to add a new folder with sources to my subversion repository. I wanted to add first the folder, then some files within the folder…Read more..

Your rating: None Average: 3.3 (6 votes)

This is  a simple article to setup a DNS Server in Ubuntu. Please follow the steps to make this.  Setting up DNS Server is used to serve the new domain names using your IP. This is kind of providing webhosting.

Step1: We need to install bind 9 for this

Read more..

Your rating: None Average: 3.3 (4 votes)


Creating your own OS can be quite a daunting task that requires a lot of computer knowledge. I found a site that may interest you, Custom NimbleX2 is an open-source project that allows even novices in computing to create their own Linux OS.

Check it Out

Follow the on screen instructions to select background, software and so on. When you have finished designing your Linux, a live CD .iso file will be generated for you, just download it and burn it to disc. Boot from the disc and install your personal, newly created custom Linux OS.

Enjoy Your Linux!

Your rating: None Average: 4.5 (8 votes)

PeerGuardian is a free, open source, IP address blocking software programs capable of blocking incoming and outgoing addresses. The application uses a blocklist of IP addresses to filter the computers of several organisations.Read more..
Your rating: None Average: 2 (1 vote)

Is your security worth its salt? Try this assessment strategy to find out.
Read more..
Your rating: None Average: 2 (1 vote)

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