svscan 1 user commands djbwares svscan starts and monitors a collection of services svscan directory svscan starts one supervise1 process for each subdirectory of the current directory, up to a limit of 1000 subdirectories. svscan skips subdirectory names starting with dots. supervise1 must be in svscan's path. svscan optionally starts a pair of supervise1 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 supervise1 process. If it sees an old subdirectory where a supervise1 process has exited, it restarts the supervise1 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 supervise1, 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. supervise1 svc1 svok1 svstat1 svscanboot1 readproctitle1 fghack1 pgrphack1 multilog1 tai64n1 tai64nlocal1 setuidgid1 envuidgid1 envdir1 softlimit1 setlock1 Original code and documentation by Daniel J. Bernstein. Converted to manual pages and updated by Gerrit Pape in 2000, 2001, and 2002. Converted to DocBook XML by Jonathan de Boyne Pollard.