svscan(8)                                               svscan(8)


NAME
       svscan - starts and monitors a collection of services

SYNOPSIS
       svscan [ directory ]

DESCRIPTION
       svscan  starts one supervise(8) process for each subdirec-
       tory of the current directory, up to a limit of 1000  sub-
       directories.   svscan  skips  subdirectory  names starting
       with dots.  supervise(8) must be in svscan'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  super-
       vise(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  cre-
       ating  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 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

















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