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This is a list of daemons that are commonly found on a Unix-like operating system. A common convention is to name a daemon with a d suffix.
| Name
|
Description
|
| init[1]
|
The 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 As of 2016, for major Linux distributions, it has been replaced by systemd.[2]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.
|
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