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Prints a file leaving out all blank lines and comment-only lines

Terminal - Prints a file leaving out all blank lines and comment-only lines
egrep -v "^\s*(#|$)" myfile.cfg
2011-12-08 15:25:17
User: dan
Functions: egrep
Prints a file leaving out all blank lines and comment-only lines

Does not print any line that either:

- is empty

- contains only spaces or tabs

- starts with #

- starts with spaces/tabs followed by a #


There are 2 alternatives - vote for the best!

Terminal - Alternatives

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What others think

You got your useless cat award. Congratulations

Comment by zolden 229 weeks ago

This, instead of dumping only lines containing only whitespace, will dump lines containing only "s". Probably not real useful, but you never know. :-)

Comment by trapperb 229 weeks ago

Might be useful for boring configs with lots of comments, but as pointed above it needs backslash before that s because, currently it does NOT do what description says.

Comment by mwgamera 228 weeks and 4 days ago

For some reason the backslash does not show up. Here's the command:

cat boring.conf | egrep -v "^\s*(#|$)"
Comment by dan 228 weeks and 3 days ago


egrep -v "^\s*(#|$)" boring.conf

No need for cat(1).

Comment by atoponce 227 weeks and 3 days ago

Thanks @atoponce, much better. I've modified the command.

Comment by dan 227 weeks and 1 day ago

Your point of view

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