32 FAQ tagged "root user"
Viewing 21-30 of 32 FAQ -- Freebsd changing password
Q. How do I change a password under FreeBSD or Linux (UNIX) operating systems?
A. The FreeBSD passwd utility changes the user’s local, Kerberos, or NIS password. If the user is not the super-user, passwd first prompts for the current password and will not continue unless the correct password is entered.
Choosing a good password
It is [...] - Linux: Openssh (ssh server) deny root user access
Q. How do I block access to root user over ssh session?
A.. sshd (OpenSSH Daemon) is the daemon program for ssh. Server side ssh configuration is defined in /etc/ssh/sshd_config file.
You need to use DenyUsers option to block access to root user.
This option can be followed by a list of user name patterns, separated by [...] - Patch and Update Redhat Enterprise Linux / CentOS 5 server
Q. Can you tell me how do I patch and update everything on my Redhat Enterprise Linux server 5?
A. Both RHEL 5 and CentOS 5 use yum command, which is an interactive, automated update program which can be used for maintaining systems using rpm.
To upgrade server and apply all security patches, pass update option [...] - Howto: Linux Write protect a file
Q. How do I write protect a file under Linux? I’m using CentOS 5 server Linux operating system. I need prevent accidental changes to my files.
A. There are two ways to write protect a file under Linux.
Method #1: You can make file readonly by removing users’ write permission for a file. Under Linux and [...] - Howto disable the iptables firewall in Linux
Q. Quick question: I need to disable firewall in Linux for testing purpose. I’m using CentOS 4.4. How do I disable the firewall in Linux?
A. A Linux firewall is software based firewall that provides protection between your server (workstation) and damaging content on the Internet or network.
It will try to guard your computer [...] - Ubuntu Linux root password - default password
Q. I have just installed Ubuntu Linux. But, what is the default root password? I can only login as a normal user.
A. This is the mystery for most users - you didn’t set a root password, so what is it?
The root user can do anything as this a/c has full access to system. So [...] - How to make a Linux File unchangeable ( unalterable ) so that no one can modify it
Q. How do I write protect file under Linux so that no one can modify it?
A. You need to use chattr command, which changes the file attributes on a Linux second extended file system. The chattr command supports various attributes.
A file with the i attribute cannot be modified: it cannot be deleted or [...] - How do I Telnet as the Root User?
Q. How do I telnet as the root user?
- Linux - What defines a user account?
Explains Linux user account concept and related files with an example.
- Linux: Delete user password
Q. How do I delete user Password under Linux? I’d like to disable a password for an account.
A. All user encrypted passwords are stored in /etc/shadow file. The quick way to remove/delete a user password is pass –delete option to passwd command. First, login in as a root user.
Command to delete [...]
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