comment on

Use the modifier notation might be of great style as well,

perl -nle 'print $1 while /constant=(.*)\s/g' /home/jamie/txt
[download]

But I remark the association of -l and \s vs. a more explicite regexp does not behave well in case of many matches on the same line!

Try it for example with a txt file as follow,

xxxxxxxxx constant=foo@bar.com xxxxxxxxxxx
xxxxxx constant=baz@huux.org xxxxxxx contant=hello@world.bye xxxxxxxxx
xxxxxxxxxxxxxxxxxxx
[download]

will print,

foo@bar.com
baz@huux.org xxxxxxx contant=hello@world.bye
[download]

I think the problem comes from (.*) that is greedy and matches even spaces at the condition there is at least one space remaining to satisfie \s. But I try (.*?) and the /g flag does not seem ok?

In reply to Re^2: grep question using multiple lines by backstab
in thread grep question using multiple lines by bradcathey

Are you posting in the right place? Check out Where do I post X? to know for sure.
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
Want more info? How to link or How to display code and escape characters are good places to start.


Just another Perl shrine
	PerlMonks