功能中的命令不适用于在终端中手动键入的命令

Question

I need to parse document for stuff like this:

#00 service.
log: servicelogin
pass: password

Don't worry, file is encrypted and separated from system :) So you see there are 'service' in first line and second, so doing it like this:

cat /path | grep -A 3 service

Returns 4 lines as it finds service two times.

However, typing in terminal this command:

cat /path | grep -A 3 service | grep -A 3 -m 1 "/."

Works like a charm.

But! As I need to type 'service' in the end alias isn't good enough. So I created a function:

function do-stuff {
    cat /path | grep -A 3 $1 | grep -A 3 -m 1 "/."
}

And it works like first one without parsing it again.

That's it. Thank you!

=== edit ===

Sure I've tried to combine it like

cat /path | grep -A 3 -m 1 service

But it's also won't work. Returns only one line.

=== edit ===

I need to get only 3 lines, not 4 as it finds it again next line.

Answer 1

Your regular expression isn't specific enough. Perhaps something like

grep -A 3 '#.* service\.' /path