NIS : Network Information Service
An NIS system maintains and distributes a central directory of user and group information, hostnames, e-mail aliases and other text-based information in a network. Though […]
NFS : Network File System
A network file system is a computer file system that supports sharing of files, printers, etc over a computer network. Package : nfs-utils.rpm Configuration file […]
Linux SSH (Secure Shell)
SSH is a network protocol. It allows data to be exchanged using a secure channel between two networked devices. Same protocol is used for: ssh […]
File Transfer Protocol (FTP)
Package: vsftpd—-.rpm Configuration file: /etc/vsftpd/vsftpd.conf Package: ftp (client) Two types of login: (a) Anonymous login: Anyone can login using the username “anonymous” or “ftp”, with […]
Bind DNS Service
DNS is a structured database system that maps a computer’s fully qualified domain name into an IP address. Computers in a network use IP addresses […]
Linux SWAP Memory
Listed delow is the procedure to create a swap space in Linux: # fdisk /dev/sda : Create a partition in Linux # mkswap -v1 /dev/sda10 […]
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, […]
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 […]
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 […]
RedHat Linux FSTAB
Syntax: Mount options: rw x ro : Read only / Read & write exec x noexec suid x nosuid auto x noauto : Should […]