<div>
the \s* makes no difference at all to the results of $line =~ m/\s*([A-Z_]+):/<br />

</div>


the \s* makes no difference at all to the results of $line =~ m/\s*([A-Z_]+):/


<div>
<div class="content wysiwyg-content">
Hi there,<br />
<br />
If a line is in the form:<br />
<br />
something here IDLE_THREAD: time in 23.2 s<br />
<br />
I want to find out the word IDLE_THREAD<br />
Thanks,<br />

</div>
</div>


Hi there,

If a line is in the form:

something here IDLE_THREAD: time in 23.2 s

I want to find out the word IDLE_THREAD
Thanks,


Perl: find a word in a line that precedes :

Perl is a high-level, general-purpose, interpreted, dynamic programming languages with over 25 years of development. Perl 5 runs on over 100 platforms from portables to mainframes and is suitable for both rapid prototyping and large-scale development projects.  Perl gained widespread popularity as a Common Gateway Interface (CGI) scripting language, in part due to its regular expression and string parsing abilities. In addition to CGI, Perl is used for graphics programming, system administration, network programming, finance, bioinformatics, and other applications.