Re: 808ercise: Shell Golf

[Weiqi Gao <weiqigao@networkusa.net>]

On Fri, 2003-04-18 at 23:53, mike808@users.sourceforge.net wrote:
> Bzzzzzzzzzt.

:(

> Weiqi tried and failed (sorry about the line wrap):
> > echo "for x in *;do file \$x|grep -q script&&[ -x \$x ]&&grep -H \
> > that\ pays \$x;done"|sh
> > 
> > 88!
> 
> > On Fri, 2003-04-18 at 15:15, mike808@users.sourceforge.net wrote:
> > > A solution is disqualified if a test case can demonstrate any of:
> > > 1. The command produces any output other than the matching grep output.
> > > 2. Performs grep searches of any file other than script files.
> > > 3. Does not perform a grep search of all script files.
> > > 4. Does not locate an instance of the phrase 'that pays' in a script file.
> 
> Your solution will fail for a binary executable containing the phrase that
> just happens to be named 'this is not a script'.(#2)

Using the -b switch on the file command will fix this.  Three more
characters.

> Your solution may also fail for files containing spaces in their names.(#1,#2)

Quoting all the $x's correctly will cost me 12 characters.  We should
ban file names that contain spaces!

> Very close, though.

Now that I think about it, I need to handle hidden files.  And other
808ish stuff that I don't know that I don't know.

> After two more worthy attempts, I'll post my solution. 

I give up.

-- 
Weiqi Gao
weiqigao@networkusa.net


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