GNU bug report logs - #36960
mistake with v param

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Daniele Grassini <danielegrassini <at> libero.it>
To: bug-grep <at> gnu.org
Subject: mistake with v param
Date: Wed, 7 Aug 2019 17:45:32 +0200

hi to all.

for first i'm very sorry for my english..

when i'm using grep in this way to get the module path:

    cd $(sudo modprobe -v --show-depends r8168 | grep -Eoi 
"(\/[[:alnum:]\.\-]+){1,}" | grep -ivE "[a-z]{1}[0-9]+\.ko$")

...it return nothing

but if i switch '-v' to '-o' to test the command, it will print the right :

    $ sudo modprobe -v --show-depends r8168 | grep -Eoi 
"(\/[[:alnum:]\.\-]+){1,}" | grep -ioE "[a-z]{1}[0-9]+\.ko$"

    $ r8168.ko

so why the '-o' option check the regular exp, but the '-v' don't do his 
job??

Many Thanks

Regards

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