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[20130216] Playing with ansible playbooks on NetBSD
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< TASK: [Install tcsh] >
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changed: [10.0.0.181]


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[20101203] Hey NetBSD, got a match?
Here's one from the "get to know your shell" department. And of course I'm talking about the only real shell, (t)csh. So... let's first make sure we are in (t)csh. Of course the '%' prompt tells that, but just to be sure:
% echo $SHELL
/bin/csh 
Now...
% hey netbsd, got a match?
hey: No match. 
Funny? Well. We all know that joke - it originates in the One True Shell trying to expand the '?' wildcard, and fails to find any files in the current directory that match any file that starts with the string "match", followed by a single random character. As a result: "No match".

This joke doesn't work in (ba)sh as those do return the unexpanded pattern by default (try it: echo foo?bar*baz). To get the same behaviour in interactive (t)csh, Christos gave this hint on one of the mailing lists: "set nonomatch" will stop complaints if there's no wildcard match, and the shell will then just return the input string as expanded result:

% set nonomatch
% hey netbsd, got a match?
hey: Command not found.
% 
% echo foo?bar*baz
foo?bar*baz 
Neat, hu?

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[20051105] Found a bug in tcsh
wget made me a directory "~foo" today. When trying to change into it, I used tab completion to not need to type the name. It seems that tcsh forgot that ~ has a special meaning and didn't escape it properly:

      % ls
      ~foo
      % cd <TAB>
      % cd ~foo
      Unknown user: foo.  
I guess fixing this is trivial, given that tab expansion already DTRT for wildcard characters and whitespaces in filenames. I even started looking at the tcsh source, but couldn't really find the right spot. :(

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