Linux Services

smartd is a daemon that monitors the Self-Monitoring, Analysis and Reporting Technology (SMART) system built into many ATA-3 and later ATA, IDE and SCSI-3 hard drives. The purpose of SMART is to monitor the reliability of the hard drive and predict drive failures, and to carry out different types of drive self-tests. This version of […]

The sshd (Secure Shell Daemon) service is part of the OpenSSH implementation for Linux that provides authenticated, end-to-end encrypted networked communication. For example, a user on one host can log in to another system without using a password because the sshd service can be configured to use alternate authentication techniques such as exchanging shared-key information. […]

This is the Name Service Cache Daemon. It takes care of group and password lookups for running programs and then caches the lookup results for the next query for services that can experience slowness in picking up changes such as NIS or LDAP. If you’re running these services, you may want to run nscd. This […]

Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Squid offers a rich access control, authorization and logging environment to develop web proxy and content serving applications.The Squid caching proxy server can also be configured as a reverse proxy to redirect http (Port 80) connections. When acting as a reverse […]

The xendomains service automatically starts, stops, and migrates Oracle VM clients (domU) as the Oracle VM server (dom0) boots or shuts down. In essence, the xendomains service automatically issues a series of xm commands to ensure the proper Oracle VM clients are started and stopped as the dom0 server is started or stopped. No daemons […]

Linux provides both server-side and client-side support for the Lightweight Directory Access Protocol (LDAP) facility. This is a standards-based facility, so it is compatible with other LDAP implementations, including Microsoft’s Active Directory. Data suitable for a directory service has low volatility as LDAP is optimized for read-mostly access; database systems are tailored for more volatile […]

The yppasswdd service executes the yppasswdd daemon. The yppasswdd is a part of NIS (Network Information Service formerly Yellow Pages) server. This server allows users to change their password on a NIS server from a NIS client. The service must be run on the NIS master server for that NIS domain in conjunction with ypserv, […]

The named service executes the DNS (Dynamic Name Service) server daemon. It converts host names to IP addresses and vice versa. There are several different kinds of DNS servers, such as primary server, slave server and cached server etc. Its data is stored in the directory /var/named. The Domain Name System (DNS) is the hierarchical, […]

HPLIP is an HP developed solution for printing, scanning, and faxing with HP inkjet and laser based printers in Linux. The HPLIP project provides printing support for 1,292 printer models, including Deskjet, Officejet, Photosmart, PSC (Print Scan Copy), Business Inkjet, LaserJet, Edgeline MFP, and LaserJet MFP. (Note: Not all models are currently supported). The Hewlett-Packard […]

Syslog is the general standard for logging system and program messages in the Linux environment. This service constitutes the system log daemon, where any program can do its logging (debug, security, normal operation) through in addition the Linux kernel messages. In principle, the logs handled by syslog are available in the /var/log/ directory on Linux […]