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This. I use:

tail -f /var/log/x.log | grep foo -A 20 -B 20

Most of the time.

You know you can also do -C 40 for 40 lines of context instead of -A 20 -B 20

Note that -C is in each direction, not total; -C20 is equivalent to -A20 -B20.

Thank you,

This is the reason I always share how I do it in hn! LOL