Filter the output of a file continously using tail and grep

tail -f $FILENAME | grep --line-buffered $PATTERN
The OPs solution will work, however on some systems (bsd), grep will not filter the data, unless the --line-buffered option is enabled.

2
2019-05-30 21:01:59

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What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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