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Thanks @sourcejedi . What does "...if a line is selected" mean exactly, and how does it interact with -c? The best I can tell, there are no errors, and either 0 or 1 shows up as expected.

user56041
– user56041

2016-11-09 19:36:50 +00:00
Commented Nov 9, 2016 at 19:36
2

selected = matches the regular expression; -c is just counting the matches -- it doesn't change the return code

Jeff Schaller
– Jeff Schaller ♦

2016-11-09 19:58:27 +00:00
Commented Nov 9, 2016 at 19:58
OK, thanks @sourcejedi. I have to be careful about how I proceed because I work on a lot of systems, like BSDs, Solaris, Linux, OS X, etc. I need to try to stay very close to Posix. Is it possible to disable regular expression matching, and just match the token as a substring like 'Darwin'? It looks like -F is Posix and may do that, but I get the same result. I also dropped the -i and performed a comparison for Darwin and SunOS with no joy.

user56041
– user56041

2016-11-09 20:27:34 +00:00
Commented Nov 9, 2016 at 20:27
sorry, you're not making any sense to me. the example solution should be fully portable, right?

sourcejedi
– sourcejedi

2016-11-09 20:52:31 +00:00
Commented Nov 9, 2016 at 20:52
@sourcejedi - "you're not making any sense to me" - Sorry about that. " the example solution should be fully portable, right..." - I don't know. I'm a C/C++ guy. I struggle with scripting at times.

user56041
– user56041

2016-11-10 12:53:49 +00:00
Commented Nov 10, 2016 at 12:53

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