81 lines
2.3 KiB
Groff
81 lines
2.3 KiB
Groff
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.TH CheckResolv 1 "2005 September" "various OS" "Tonton Th"
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.SH NAME
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checkresolv \- quick & dirty tool for checking sanity of resolver.
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.SH SYNOPSIS
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\fBcheckresolv\fP -V
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.br
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\fBcheckresolv\fP [options] host.name
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.br
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\fBcheckresolv\fP [options] 42.51.69.406
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.SH DESCRIPTION
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CheckResolv is a (not so) q'n'd tool for checking basic capacities and
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potentials bugs of your resolver configuration.
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I have started the dev of this thing when I was working hard on a remote
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nasty printing problems.
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It use only \fBgethostbyname\fP and \fBgethostbyaddr\fP functions,
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like any lambda applications.
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CheckResolv can also display environment variables who can modify the behaviour
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of this damned resolver, or give you some problems.
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.SH OPTIONS
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.B -V
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display version number and exit.
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.br
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.B -h
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brief help on the command-line options.
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.br
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.B -v
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display various useless messages.
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.br
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.B -r
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do reverse lookup on IP address discovered.
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.br
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.B -e
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show content of a few environment vars resolver-related.
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.br
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.B -t
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compute elapsed time of operation, not really accurate.
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.SH TIPS
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If you have a strange problem between two hosts, "don't panic". Take the time
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to compil CheckResolv on the two hosts, and run it with the -r option, first
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with the hostname, and after that, with the IP address.
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And do this two runs on the two hosts. So, you get four results.
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Now, use your brain...
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.SH CONFIG FILE
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All your config files are belong to us. In the futur, may be you can
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put a list of env vars to display in a file.
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.SH ENV VARS
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If the environment variable CHECKRESOLV is set to "tech", reverse lookup
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and timing are activated, very nice when your pop3 server take 42 seconds
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before you can get some silly answer.
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And "all" give you all the bells & whistles.
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This variable override command lines options.
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.SH SEE ALSO
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.BR resolver (5),
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.BR host (1),
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.BR dig (1),
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.BR nslookup (1)
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.SH BUGS
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Some are here, some are waiting in the dark. Hidden static storage is a pain.
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No IPv6 support. No Slackware package, no Debian package...
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.SH COMPILATION
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Currently (2005 march), this software was only tested on Slackware 10.0 and
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Debian Sarge, but it can
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compile 'fine' on others Linux or *BSD flavors. IRIX is also a valuable target,
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because my troll-master use it...
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.SH AUTHOR(S)
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Thierry (aka tth) Boudet, with help from @donis, Miod, Reynerie...
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