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- backup
-
- This program should be run set-uid root. At genentech, we set the
- permissions to 4550 with group operator. Backup was originally a
- simple experiment to play around with yacc, it has proven to be
- a very useful tool. Daily backups are normally performed using
- the "-m" option, which allows the system to continue running. Without
- this option, all running processes are sent "SIGHUP", any processes
- remaining after the SIGHUP are SIGSTOPped for the duration of the
- backup. After backup is complete, a SIGCONT is sent to all of the
- stopped processes.
-
- Some notes about exclusions and special cases:
- There is a list of processes to be excluded from either HUP or
- STOP in proclist.c. In addition, some programs such as daemons,
- etc. require special restarting. The table for this is in
- proclist.c also.
-
- 10/2/87
-