.TH svscan 8
.SH NAME
svscan \- starts and monitors a collection of services
.SH SYNOPSIS
.B svscan
[
.I directory
]
.SH DESCRIPTION
.B svscan
starts one
.BR supervise (8)
process for each subdirectory of the current directory, up to a limit of 1000
subdirectories.
.B svscan
skips subdirectory names starting with dots.
.BR supervise (8)
must be in
.BR svscan 's
path.

.B svscan
optionally starts a pair of
.BR supervise (8)
processes, one for a subdirectory
.IR s ,
one for
.IR s\fR/\fBlog ,
with a pipe between them. It does this if the name
.I s
is at most 255 bytes long and
.I s\fR/\fBlog
exists. (In versions 0.70 and below, it does this if
.I s
is sticky.)
.B svscan
needs two free descriptors for each pipe.

Every five seconds,
.B svscan
checks for subdirectories again. If it sees a new subdirectory, it starts a
new
.BR supervise (8)
process. If it sees an old subdirectory where a
.BR supervise (8)
process has exited, it restarts the
.BR supervise (8)
process. In the
.B log
case it reuses the same pipe so that no data is lost.

.B svscan
is designed to run forever. If it has trouble creating a pipe or running
.BR supervise (8),
it prints a message to stderr; it will try again five seconds later.

If
.B svscan
is given a command-line argument
.IR directory ,
it switches to that
.I directory
when it starts.
.SH SEE ALSO
supervise(8),
svc(8),
svok(8),
svstat(8),
svscanboot(8),
readproctitle(8),
fghack(8),  
pgrphack(8),
multilog(8),
tai64n(8),
tai64nlocal(8),
setuidgid(8),
envuidgid(8),
envdir(8),
softlimit(8),
setlock(8)

http://cr.yp.to/daemontools.html