<s>
This	O
is	O
a	O
list	B-Operating_System
of	I-Operating_System
Unix	I-Operating_System
daemons	I-Operating_System
that	O
are	O
found	O
on	O
various	O
Unix-like	B-Operating_System
operating	I-Operating_System
systems	I-Operating_System
.	O
</s>
<s>
Unix	B-Operating_System
daemons	I-Operating_System
typically	O
have	O
a	O
name	O
ending	O
with	O
a	O
d	O
.	O
</s>
<s>
As	O
of	O
2016	O
,	O
for	O
major	O
Linux	O
distributions	O
,	O
it	O
has	O
been	O
replaced	O
by	O
systemd.biodWorks	O
in	O
cooperation	O
with	O
the	O
remote	O
nfsd	B-Protocol
to	O
handle	O
client	O
NFS	B-Protocol
requests.crondTime-based	O
job	B-General_Concept
scheduler	I-General_Concept
,	O
runs	O
jobs	O
in	O
the	O
background.dhcpdDynamically	O
configure	O
TCP/IP	O
information	O
for	O
clients.fingerdProvides	O
a	O
network	O
interface	O
for	O
the	O
finger	B-Application
protocol	I-Application
,	O
as	O
used	O
by	O
the	O
finger	O
command.ftpdServices	O
FTP	B-Protocol
requests	O
from	O
a	O
remote	O
system.httpdWeb	O
server	O
daemon.inetdListens	O
for	O
network	O
connection	O
requests	O
.	O
</s>
<s>
If	O
a	O
request	O
is	O
accepted	O
,	O
it	O
can	O
launch	O
a	O
background	O
daemon	B-Operating_System
to	O
handle	O
the	O
request	O
,	O
was	O
known	O
as	O
the	O
super	O
server	O
for	O
this	O
reason	O
.	O
</s>
<s>
Some	O
systems	O
use	O
the	O
replacement	O
command	O
xinetd.lpdThe	O
line	B-Protocol
printer	I-Protocol
daemon	I-Protocol
that	O
manages	O
printer	O
spooling.nfsdProcesses	O
NFS	B-Protocol
operation	O
requests	O
from	O
client	O
systems	O
.	O
</s>
<s>
Historically	O
each	O
nfsd	B-Protocol
daemon	B-Operating_System
handled	O
one	O
request	O
at	O
a	O
time	O
,	O
so	O
it	O
was	O
normal	O
to	O
start	O
multiple	O
copies.ntpdNetwork	O
Time	O
Protocol	O
daemon	B-Operating_System
that	O
manages	O
clock	O
synchronization	O
across	O
the	O
network	O
.	O
</s>
<s>
xntpd	O
implements	O
the	O
version	O
3	O
standard	O
of	O
NTP.portmap/rpcbindProvides	O
information	O
to	O
allow	O
ONC	B-Protocol
RPC	I-Protocol
clients	O
to	O
contact	O
ONC	B-Protocol
RPC	I-Protocol
serverssshdListens	O
for	O
Secure	B-Protocol
Shell	I-Protocol
requests	O
from	O
clients.sendmailSMTP	O
daemon.swapperCopies	O
process	O
regions	O
to	O
swap	B-Architecture
space	O
in	O
order	O
to	O
reclaim	O
physical	O
pages	B-Architecture
of	O
memory	B-General_Concept
for	O
the	O
kernel	B-Operating_System
.	O
</s>
<s>
Also	O
called	O
sched.syslogdSystem	O
logger	O
process	O
that	O
collects	O
various	O
system	O
messages.syncdPeriodically	O
keeps	O
the	O
file	B-Application
systems	I-Application
synchronized	O
with	O
system	O
memory.systemdReplacement	O
of	O
init	B-Operating_System
,	O
the	O
Unix	O
program	O
which	O
spawns	O
all	O
other	O
processes.xfsdServe	O
X11	B-Operating_System
fonts	O
to	O
remote	O
clients.vhandReleases	O
pages	B-Architecture
of	O
memory	B-General_Concept
for	O
use	O
by	O
other	O
processes	O
.	O
</s>
<s>
Also	O
known	O
as	O
the	O
"	O
page	O
stealing	O
daemon	B-Operating_System
"	O
ypbindFind	O
the	O
server	O
for	O
an	O
NIS	B-Operating_System
domain	O
and	O
store	O
the	O
information	O
in	O
a	O
file	O
.	O
</s>
