Fwd: Re: bug in the documentation, or ...?

[nusret]

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> Subject: 
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> Re: bug in the documentation, or ...?
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> Date: 
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> Tue, 14 Feb 2006 16:43:58 -0500
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> %% nusret <address@hidden> writes:
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>   n> I really don't have any experience with Unix(-like)
>   n> systems. Someone told in some mailing list that if we change ';' to
>   n> '&&' the change will cause problems in some unix systems. is this
>   n> true?
>
> No, that's not true.
>
>   n> Why do you say && is safer?
>
> If you use this:
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>     cd foo; blahblah
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> and the directory "foo" does not exist then it will print an error BUT
> it will still run the command "blahblah".  Consider what happens if
> "blahblah" is really a rm command, for example:
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>     cd foo; rm *
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> Now if foo doesn't exist you'll remove all the files in your current
> directory!!
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>
> On the other hand, if you use && then the second command only runs if
> the first one succeeds, so with:
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>     cd foo && blahblah
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> the command "blahblah" won't run if the cd fails.
>
> -- 
> -------------------------------------------------------------------------------
>  Paul D. Smith <address@hidden>          Find some GNU make tips at:
>  http://www.gnu.org                      http://make.paulandlesley.org
>  "Please remain calm...I may be mad, but I am a professional." --Mad Scientist
>
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