Need help with tcsh shell script

[ddm at pizzashack.org (Derek Martin)]

On Mon, May 28, 2001 at 09:44:31AM -0400, Scott Ehrlich wrote:
> Hello to all:

Hi there!

> Five or more years ago, the following piece of shell code worked fine. Now
> that I have a need to use it again, OS upgrades/enhancements has broken it
> and I am hoping you can help fix it.

The line you gave should work fine under sh/bash except that you have a
small type-o:

> The code is:
> 
> if [ `diff /home/scott/old-file /home/scott/new-file | wc -c` -ne 0]
                                                                    ^^
                                                                    0 ]

The space after the zero is required.  And to make sure that the rest
of the if clause is not your problem, in sh/bash, you would then
follow it with a then (on a seperate line, or after a ';') like this:

  then
       ...
       <if block code>
       ...
  fi

Also note that while diff and wc are usually in a user's $PATH, if
they are not you should specify the full path to them.  I don't know
csh very well but I believe the equivalent of your line would be this:

  if (`diff /home/scott/old-file /home/scott/new-file | wc -c` != 0)

Hope that helps.


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Derek Martin          |   Unix/Linux geek
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