Redhat Linux User Administration (RHEL 4)
User ID = uid. The uid of root is 0. UID from 1 to 499 is reserved for system services such as the user apache, nagios, etc The first user created by root will always…
Linux
Redhat Package Manager (RPM)
Set of binary files, which are compiled programs. This is similar to add/remove programs in windows. RPM is used to manage installation packages including installation and un-installation. The database that contains information of all rpms…
Linux File Attributes
Listed below are few attributes that can be assigned to a file: # chattr +i /etc/passwd : i = immutable (cannot remove, edit, rename or move) # chattr -i /etc/passwd : Remove the above…
RedHat Linux FSTAB
Syntax: Mount options: rw x ro : Read only / Read & write exec x noexec suid x nosuid auto x noauto : Should this device be mounted in boot-up automatically or not user…
Linux File System Management
Disk Druid: The only tool used for partitioning management at the time of installation Partitioning management utilities available after installation: fdisk parted sfdisk Total partitions allowed is 63. From the fifth, it will be extended…
Installing and Configuring Spamassassin to work with Postfix SMTP server
Email spam, which is also know as junk email, are identical email messages sent to several email recipients. This could be emails sent by companies for marketing purposes, email sent bring user to phishing web…
Enabling postfix SMTP authentication using Dovecot
If you configure postfix in a default manner as posted in my previous posts, mail relay will be disabled. This is a security feature since you will not want people to misuse your SMTP server…
Configuring pop3 server Dovecot to access postfix virtual domains
This is a continuation of “Configuring postfix virtual mail domain” We need to update dovecot configuration files so that the pop3 server can locate the mailbox files and the password files. Edit the following files,…
Configuring postfix virtual mail domain
This is part of the Postfix documents series, continuation of “Accessing a dovecot imap server using SquirrelMail”. One should complete the initial steps in these docuemtns to make this work. Create a user to manage…
How to install and configure SuPHP
The SuPHP is Developed by Sebastian Marsching . The source package is available licensed under the GNU GPLv2. Even though there are several binary installation packages (rpm) from several third-party repositories, for best compatibility and…