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"grep: invalid option -- P" when running start.sh on Mac #17

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wallacekelly-da opened this issue Jan 18, 2023 · 0 comments

wallacekelly-da commented Jan 18, 2023

I was working through this repo's example on a Mac. When I got to this step...

Use the start script for starting a ledger & the java application:

...I tried running ./start.sh examples.pingpong.grpc.PingPongGrpcMain and received this error message...

grep: invalid option -- P
usage: grep [-abcdDEFGHhIiJLlMmnOopqRSsUVvwXxZz] [-A num] [-B num] [-C[num]]
	[-e pattern] [-f file] [--binary-files=value] [--color=when]
	[--context[=num]] [--directories=action] [--label] [--line-buffered]
	[--null] [pattern] [file ...]

Googling suggests that some (but not all) versions of grep include flags -P, --perl-regexp

I suppose the regular expressions in start.sh should be converted from a Perl regex to a basic regex.

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