57 lines
1.9 KiB
Groff
57 lines
1.9 KiB
Groff
.TH SERVICE 8
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.SH NAME
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service \- Start or stop an operating system server or device driver.
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.SH SYNOPSIS
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.PP
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\fBservice up\fR \fI<service>\fR [\fB-args\fR \fIargs\fR]
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[\fB-dev\fR \fIspecial\fR] [\fB-period\fR \fIticks\fR]
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.PP
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\fBservice down\fR \fI<pid>\fR
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.PP
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\fBservice refresh\fR \fI<pid>\fR
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.PP
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\fBservice shutdown\fR
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.br
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.de FL
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.TP
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\\fB\\$1\\fR
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\\$2
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..
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.de EX
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.TP
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\\fB\\$1\\fR
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\\$2
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..
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.SH DESCRIPTION
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.PP
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Tells the reincarnation server to start or stop a system service, such as a
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server or device driver. The device driver will be automatically restarted when
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it unexpectedly exits, e.g., if it is killed because of a bad pointer.
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Starting requires an absoluate path to the binary to be executed.
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.PP
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When an optional period is specified, the reincarnation server sends a status
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request to the system service after every period. If there the response does
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not arrive in time, the reincarnation server will kill the misbehaving process
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and restart a new one. The period must be specified in ticks, but can be
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appended with 'HZ' to make it seconds.
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.PP
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Stopping a system service requires the process id of a running system service.
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Issuing a kill command from the shell will not work, since the reincarnation
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server interprets this as an unexpected exit and will automatically restart
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a fresh copy of the process. The clean way to restart a process is using the
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'refresh' option of the service utility.
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.PP
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If the system is to be shutdown, the reincarnation server should know about this event to prevent it from restarting services that are killed during the shutdown
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sequence.
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.SH EXAMPLES
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.EX "service up /sbin/is -period 5HZ" "Start the IS server and check its status every 5 seconds."
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.br
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.EX "service up /usr/sbin/dp8390 -args DPETH0=pci" "Start the DP8390 ethernet driver, passing one argument."
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.br
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.EX "service down 117" "Stop the system service with process id 117."
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.br
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.SH "SEE ALSO"
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.PP
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.BR boot (8),
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.BR monitor (8)
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