djbdnscurve6:
Section: Misc. Reference Manual Pages (dnsfilter)
Updated: 1
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NAME
dnsfilter - resolves IP addresses to host names
SYNOPSIS
dnsfilter
[
opts
]
DESCRIPTION
dnsfilter
reads a series of lines from stdin,
converts an IP address to a host name at the beginning of each line,
and prints the results to stdout.
If a line does not begin with an IP address,
dnsfilter
leaves the line alone.
If an IP address does not have a host name listed in DNS,
dnsfilter
leaves the line alone.
If an IP address has a host name listed in DNS,
dnsfilter
inserts an equals sign and the host name
before the first space or tab in the line.
If a DNS lookup fails temporarily,
dnsfilter
inserts a colon and a dash-separated error message
before the first space or tab in the line.
While
dnsfilter
is looking up an address in DNS,
it reads ahead in the input and looks for more addresses to look up in parallel.
OPTIONS
opts
is a series of getopt-style options:
- -c n
-
Do at most
n
DNS queries in parallel.
Default: 10.
- -l n
-
Read ahead at most
n
lines.
Default: 1000.
SEE ALSO
dnsip(1),
dnsipq(1),
dnsname(1),
dnsmx(1),
dnstxt(1),
dnsqr(1),
dnsq(1),
dnstrace(1)
REFEENCE
http://cr.yp.to/djbdns.html
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- OPTIONS
-
- SEE ALSO
-
- REFEENCE
-
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