== The sort of command line I can wind up typing

Here's the sort of command line I can wind up typing:

> _spam/wtd daemon | expsyslog.pl | tcpwrhits -i | sed 10q |
> while (read foo) { n=`{echo $foo}; echo '| '^$n '|' `{checksmtp $n(2)}; }_

(This will probably be wrapped in your browser, but it is all one line.)

I wrote that on the fly, in one pass, although I had to think it through
a bit. I'm not going to claim that this is a typical Unix command line,
but I do think it's the sort of thing experienced Unix users wind up
doing every so often. It's also a good illustration of the density of
little custom scripts in real environments.

What it produces is more or less the 'count / IP address / why'
table from [[this week's spam summary ../spam/SpamSummary-2006-04-22]],
in DWikiText form ready to be dumped into place.

(The shell syntax will look a bit strange, since [[I use _rc_
NonstandardShellAdvantage]].)

=== Sidebar: an index of commands

|_. _spam/wtd_	| Spits out the last week's worth of some sort of log,
		  in this case the _daemon_ syslogs.
| _[[expsyslog.pl SyslogGotcha]]_ | expand 'last message repeated N times' in
				    syslog logs
| _tcpwrhits_	| Generate a report of IP addresses rejected at
		  connection time by our SMTP frontend (and how many times
		  each was rejected)
| _checksmtp_	| Tell me what our SMTP frontend would do for a connection
		  from a given IP address.

(Except for _expsyslog.pl_, all of these are completely specific to
our environment and thus pretty uninteresting.)