Here's a small irritation with Unix wildcards: there's no generallyrecognized wildcard (or small set of wildcards) that matches all of thefiles in a directory, including dotfiles but excluding . and .. ,so that you could easily match all of a directory's real contents.

A plain * doesn't match dotfiles; * .* matches dotfiles, butincludes . and .. too. About the best you can do is

* .??* .[^.]

However this

A while back a co-worker asked me why SSH (sometimes) uses a secondtemporary host key in addition to the main host key. I had to thinkabout it for a bit: it's to keep the session private even if theserver's host key is later compromised.

(The clever person will notice I could have found this out just byreading the description of the KeyRegenerationInterval sshd parameter.I observe that one rarely pauses to grovel through manpages whendiscussing half-remembered things with co-

Python's indentation rules apply only to logicallines (as the documentation is careful to spell out), although theindentation level only comes from the first physical line. This opens upvarious sorts of peculiarity and evil, some of which I mentioned lasttime .

There are two ways for multiple physical lines to be joinedinto one logical lines: being explicitly continued witha \ at the end of the line ( explicit line joining ), orbeing inside a ( , { , or [ ( implicit line joining )