List of Unix daemons
This is a list of Unix daemons that are found on various Unix-like operating systems. Unix daemons typically have a name ending with a d.
| Process | Description |
|---|---|
| init[1] | The Unix program which spawns all other processes. As of 2016, for major Linux distributions, it has been replaced by systemd.[2] |
| biod[3] | Works in cooperation with the remote nfsd to handle client NFS requests. |
| crond[1] | Time-based job scheduler, runs jobs in the background. |
| dhcpd | Dynamically configure TCP/IP information for clients. |
| fingerd | Provides a network interface for the finger protocol, as used by the finger command. |
| ftpd[1] | Services FTP requests from a remote system. |
| httpd | Web server daemon. |
| inetd[4] | Listens for network connection requests. If a request is accepted, it can launch a background daemon to handle the request, was known as the super server for this reason. Some systems use the replacement command xinetd. |
| lpd | The line printer daemon that manages printer spooling. |
| nfsd[3] | Processes NFS operation requests from client systems. Historically each nfsd daemon handled one request at a time, so it was normal to start multiple copies. |
| ntpd | Network Time Protocol daemon that manages clock synchronization across the network. xntpd implements the version 3 standard of NTP. |
| portmap/rpcbind | Provides information to allow ONC RPC clients to contact ONC RPC servers |
| sshd | Listens for Secure Shell requests from clients. |
| sendmail | SMTP daemon. |
| swapper | Copies process regions to swap space in order to reclaim physical pages of memory for the kernel. Also called sched. |
| syslogd | System logger process that collects various system messages. |
| syncd | Periodically keeps the file systems synchronized with system memory. |
| systemd | Replacement of init, the Unix program which spawns all other processes. |
| xfsd | Serve X11 fonts to remote clients. |
| vhand | Releases pages of memory for use by other processes. Also known as the "page stealing daemon" |
| ypbind | Find the server for an NIS domain and store the information in a file. |
See also
References
- Verma, Archna (2006), Unix and Shell Programming, Laxmi Publications, p. 84, ISBN 81-7008-958-1
- Saunders, Mike (11 November 2015). "Linux 101: Get the most out of systemd". Linux Voice. Archived from the original on 29 May 2016. Retrieved 28 January 2016.
- Rosen, Kenneth H.; Host, Douglas A.; Klee, Rachel (2006), UNIX: the complete reference, Complete Reference Series (2nd ed.), McGraw-Hill Professional, p. 514, ISBN 0-07-226336-9
- Stevens, W. Richard; Fenner, Bill; Rudoff, Andrew M. (2004), UNIX Network Programming: The sockets networking API, Addison-Wesley professional computing series (3rd ed.), Addison-Wesley Professional, p. 372, ISBN 0-13-141155-1
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