netdev - Re: [PATCH net-next 1/3] selftests: mptcp: fix a mp

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Message-ID: <20220516131346.1f1f95d9@kernel.org>
Date:   Mon, 16 May 2022 13:13:46 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Mat Martineau <mathew.j.martineau@...ux.intel.com>
Cc:     netdev@...r.kernel.org, Geliang Tang <geliang.tang@...e.com>,
        davem@...emloft.net, pabeni@...hat.com, edumazet@...gle.com,
        matthieu.baerts@...sares.net, mptcp@...ts.linux.dev
Subject: Re: [PATCH net-next 1/3] selftests: mptcp: fix a mp_fail test
 warning

On Fri, 13 May 2022 17:21:13 -0700 Mat Martineau wrote:
>  	tc -n $ns2 -j -s action show action pedit index 100 | \
> +		grep "packets" | \
>  		sed 's/.*"packets":\([0-9]\+\),.*/\1/'

sed can do the grepping for you:

sed -n 's/.*"packets":\([0-9]\+\),.*/\1/p'

But really grepping JSON output seems weird. Why not use jq?