expire~1.1

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.TH EXPIRE-IP-DB 1 "August 1999" Fastresolve
.SH NAME
expire-ip-db \- remove old entries from a dns-terror DB file
.SH SYNOPSIS
.B expire-ip-db
[\-v] [\-d days] [\-m mark-size] [ip2host.db]
.SH DESCRIPTION
.B expire-ip-db
removes entries older than a given time from
a DB file produced by
.BR dns-terror .
This keeps the DB file from growing without bounds.  If this were not
done, then eventually the overhead of storing months' worth of IP
address to hostname mappings could become greater than the speed
benefit from having them available, and the memory image of
.B dns-terror
could become unworkably large.
.SH OPTIONS
.IP "\-d days"
Remove entries older than days.  Default is 35 days, which is long
enough for daily entries to last to the next monthly report.
.IP "\-m marksize"
Print a notice every marksize entries.
.IP \-v
Verbose: print progress messages.
.SH FILES
.IP ip2host.db
Default DB file to process.
.SH "SEE ALSO"
convert-ip-db(1), dns-terror(1), db_intro(3)
.SH AUTHORS
David MacKenzie <[e-mail]>.
Please send comments and bug reports to [e-mail].