Date: Sun, 11 Oct 1998 18:25:04 +1000 From: Bruce Evans <bde@zeta.org.au> To: bde@zeta.org.au, mark@grondar.za Cc: current@FreeBSD.ORG, garbanzo@hooked.net, perlsta@fs3.ny.genx.net Subject: Re: /usr/include/sys/cam/scsi... Message-ID: <199810110825.SAA19450@godzilla.zeta.org.au>
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>> >cd /usr/include; find . -type f -ctime +N -delete >> > >> >Where N (in days) is chosen to be a bit longer than the number of days >> >between now and your last "make world". >> >> Don't do that. Includes are installed by `install -C', so most of them >> should be very old. > >Huh!!?? Why does it work, then? Oops. It does work. `install -C' should attempt to avoid modifying ctimes, since incremental backups should be based on ctimes, so modifying ctimes mainly bloats such backups. I forgot that it doesn't actually avoid modifying them. It always does the following operations on the target file: fchown(), fchmod(), fchflags(); and at least some of these are required to clobber the ctime even when nothing has changed. Bruce To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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