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Checking return value of commands in pipe

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#1 (permalink)

04-23-2007

btherl

Registered User

Join Date: Apr 2007

Posts: 3

Checking return value of commands in pipe

Hi,

I am wondering how I can check the return value of all commands in a pipe such as

gzip -dc file.gz | sort -u > output.txt

If I run this sequence in bash and check $?, I get the return status from sort. But I want to know if the initial gzip failed.

Similarly for longer pipe chains, I want to know if any of the components returned an error status.

I don't mind if you give a solution for another shell such as tcsh. Any solution is great!

Thanks!

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