Perl regexes from a file -- how to use $1?
38175
How can I use a variable in the replacement side of the Perl substitution operator?
155330
In Perl, how can I read an entire file into a string?
88254
How do I perform a Perl substitution on a string while keeping the original?
136673
How to print file content only if the first line matches a certain pattern?
63295
How do you round a floating point number in Perl?
52424
Using regex inside if clause in bash
1805
Do Python regexes support something like Perl's \G?
96849
What does =~ do in Perl?
94082
Is it possible to pad integers with zeros using regular expressions?
83564
How to grep lines which does not begin with "#" or ";"?
97025
Can I get $$...$$ to behave like \[...\]?
10632
sed regular expression behaving differently than in vim and perl?
28459
How do regular expressions differ from wildcards used to filter files
153817
Shell, howto extract letters from $line1="Test this... test this!", and print one by one
93769
What is //= in Perl?
40057
Grabbing the first [x] characters for a string from a pipe
76849
Why doesn't this Perl one-liner work on Windows?