February 2006

The Ruby on Rails web application framework got lots of buzz in last year. Apple has just posted very nice and easy to follow tutorial on Ruby On Rails for web development on Mac OS X. According to apple it is no surprise that Mac OS X is a favored platform for Rails development. Rails […]

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Almost all Linux distribution comes with its own set of GUI tools to manage users and groups. For example: * Red Hat comes with redhat-config-user * Suse comes with Yast * Debian Linux and other distro come with users-admin GUI tool set * FreeBSD with sysinstall * Solaris comes with Solaris Management Centre (SMC) However, […]

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The best way to edit /etc/passwd, or shadow or group file is to use vipw command. Traditionally (under UNIX and Linux) if you use vi to edit /etc/passwd file and same time a user try to change a password while root editing file, then the user’s change will not entered into file. To avoid this […]

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You need to use the sudo command to grant a permission to other users to shutdown your server. The sudo command allows a permitted user to execute a command as the superuser or another user, as specified in the /etc/sudoers file. Login as a root user and type the visudo command to edit the sudoers file.

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One of my friend installed Oracle first time. After installation, he just wants to make sure everything is working fine so he called me. If you are installing oracle for Unix/Linux oses first time then it will confuse you. He wanted to know how to start oracle service and test it. He emailed me the […]

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If you have, a password protected grub boot loader and you forgot both root and grub password, then you can recover grub-boot loader password using the following method/procedure:

* Use Knoppix cd
* Remove the password from Grub configuration file
* Reboot the system
* Change the root password
* Setup new Grub password if required (optional)

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