Date: Sun, 16 Oct 2005 10:50:04 -0700 From: Drew Tomlinson <drew@mykitchentable.net> To: f-q <freebsd-questions@freebsd.org> Cc: David Kirchner <dpk@dpk.net> Subject: Re: Help Understanding While Loop Message-ID: <435292CC.1080008@mykitchentable.net> In-Reply-To: <20051016063306.GB2152@holestein.holy.cow> References: <435027A3.8000908@mykitchentable.net> <35c231bf0510141524u133f2d1bkeb46d60e112ee413@mail.gmail.com> <435189CD.8080606@mykitchentable.net> <20051016063306.GB2152@holestein.holy.cow>
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On 10/15/2005 11:33 PM Parv wrote:
>in message <435189CD.8080606@mykitchentable.net>,
>wrote Drew Tomlinson thusly...
>
>
>>Thus I set the following variables:
>>
>>remote_pictures_dir="/multimedia/Pictures"
>>local_pictures_dir="/tv/pictures"
>>find_args="-iname '*.jpg' -or -iname '*.gif'"
>>
>>Then I called the 'find' command as follows:
>>
>>for original in $(/usr/bin/find $remote_pictures_dir $find_args -print)
>>
>>But when I run my script, I get "/usr/bin/find: invalid predicate
>>`-iname '*.jpg' -or -iname '*.gif''".
>>
>>
>
>I don't get the "invalid predicate"; i get nothing printed at all
>(bash3 & sh).
>
>
>
>
>>However if I don't try and
>>use $find_args and type the arguments in specifically, the script
>>runs fine.
>>
>>
>
>Are you really sure about the "runs fine" part? Here, when the
>"-iname" options were not surrounded by '\(' & '\)', find searched
>only for the last option, in this case "-iname '*.gif'", ignoring
>all the '*.jpg' files.
>
>
I thought I was but then after continuing to play around with it I
noticed the phenomena you describe above. That's when I added the '\('
as you mention. Good catch!
>>I tried various combinations of quoting and escaping
>>those quotes but can't come up with a combination that works.
>>
>>
>
>Add "eval" before "find" so that find recognizes $find_args as
>separate options not one long string, and group $find_args to make
>it work what you actually wanted ...
>
> for f in $( eval "find $dir \( $find_args \) -print" )
> do
> echo "$f"
> done
>
>
Thank you very much!!! This works great.
Drew
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