svscan(8)svscan(8)NAMEsvscan - starts and monitors a collection of services
SYNOPSISsvscan [ directory ]
DESCRIPTIONsvscan starts one supervise(8) process for each subdirectory of the
current directory, up to a limit of 1000 subdirectories. svscan skips
subdirectory names starting with dots. supervise(8) must be in svs‐
can's path.
svscan optionally starts a pair of supervise(8) processes, one for a
subdirectory s, one for s/log, with a pipe between them. It does this
if the name s is at most 255 bytes long and s/log exists. (In versions
0.70 and below, it does this if s is sticky.) svscan needs two free
descriptors for each pipe.
Every five seconds, svscan checks for subdirectories again. If it sees
a new subdirectory, it starts a new supervise(8) process. If it sees an
old subdirectory where a supervise(8) process has exited, it restarts
the supervise(8) process. In the log case it reuses the same pipe so
that no data is lost.
svscan is designed to run forever. If it has trouble creating a pipe or
running supervise(8), it prints a message to stderr; it will try again
five seconds later.
If svscan is given a command-line argument directory, it switches to
that directory when it starts.
SEE ALSOsupervise(8), svc(8), svok(8), svstat(8), svscanboot(8), readprocti‐
tle(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
svscan(8)
