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Ray,

On 11/8/17 3:51 PM, Ray Holme wrote:
> this makes it easy in linux or mac land for i in *.jar; do echo
> scanning $i; jar tf $i | grep "\.tld"; sleep 1; done

I'd change that to:

$ for i in *.jar; do echo scanning $i; unzip -l "$i" | grep -i "\.tld"
; done

Changes:

1. Use unzip instead of jar. It's much faster.
2. Quote "$i", in case the filename contain (*shudder*) spaces
3. Use -i switch with grep, in case the filename happens to be TAGLIB.TL
D

- -chris

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> Ray,
> 
> On 11/8/17 11:24 AM, Ray Holme wrote:
>> In a prior post, I asked if there was a way to see if a jar uses
>> a tag library. Chris responded - look for ".tld" in the files.
> 
> To clarify, I was responding to a question as to whether a JAR
> file *contained* a tag library, not that it used one. Big
> difference.
> 
>> So I looked (turns out ecj.. has no ".tld": $ grep "tld" 
>> *.jarBinary file catalina-storeconfig.jar matches Binary file 
>> ecj-4.6.1.jar matches Binary file tomcat-util-scan.jar matches
> 
> I agree with Chris Cheshire: check the ZIP contents list and not a 
> binary check. Though the ZIP filenames are stored (mostly) in the 
> clear, it's possible that you might get unlucky. Also make sure
> you use a case-insensitive check.
> 
>> I am just trying to find a reliable way to see if there is TAG 
>> library.
> 
> Searching for .tld files ought to do it.
> 
> Have you found a case where this *didn't* work?
> 
> - -chris -----BEGIN PGP SIGNATURE----- Comment: GPGTools -
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