Perl script search | Perl programming | Perl Tutorial» regular expression perl http://www.perlscriptsearch.com Mon, 06 Jun 2011 13:22:29 +0000 en hourly 1 http://wordpress.org/?v=3.2.1 perl expression statement? http://www.perlscriptsearch.com/perl-script/regular-expression-perl-perl-script/perl-expression-statement/ http://www.perlscriptsearch.com/perl-script/regular-expression-perl-perl-script/perl-expression-statement/#comments Mon, 26 Apr 2010 00:10:55 +0000 Admin http://www.perlscriptsearch.com/perl-script/regular-expression-perl-perl-script/perl-expression-statement/ I’m teaching myself perl on the fly, and I can’t find any good documentation on regular expressions and delimiters that don’t involve "Hello World."

Can you help me decipher what this expression is doing?

if (/^WAIT #(\d+): nam=’([^']*)’ ela=\s*(\d+)/i)

the input is a oracle trace file, and this line is looking for lines anchored with WAIT. But I’m not following the rest of the line
is there a way to make WAIT = ?

]]> http://www.perlscriptsearch.com/perl-script/regular-expression-perl-perl-script/perl-expression-statement/feed/ 0 Perl – Regular Expressions – $value =~ s/~!/ ~!/g;? http://www.perlscriptsearch.com/perl-script/regular-expression-perl-perl-script/perl-regular-expressions-value-s-g/ http://www.perlscriptsearch.com/perl-script/regular-expression-perl-perl-script/perl-regular-expressions-value-s-g/#comments Sat, 24 Apr 2010 20:51:54 +0000 Admin http://www.perlscriptsearch.com/perl-script/regular-expression-perl-perl-script/perl-regular-expressions-value-s-g/ This line is from the classic formmail.cgi script:
$value =~ s/~!/ ~!/g;

It’s to stop people from using subshells. But, does anyone know what this line is actually doing and how it’s doing it?

Thanks.

]]> http://www.perlscriptsearch.com/perl-script/regular-expression-perl-perl-script/perl-regular-expressions-value-s-g/feed/ 1 Extracting data in Perl with regular expressions…? http://www.perlscriptsearch.com/perl-script/regular-expression-perl-perl-script/extracting-data-in-perl-with-regular-expressions/ http://www.perlscriptsearch.com/perl-script/regular-expression-perl-perl-script/extracting-data-in-perl-with-regular-expressions/#comments Fri, 23 Apr 2010 22:33:13 +0000 Admin http://www.perlscriptsearch.com/perl-script/regular-expression-perl-perl-script/extracting-data-in-perl-with-regular-expressions/ I am trying to read all latitude and longitude values from NWS warning files like this: http://www.weather.gov/data/SGF/SVRSGF

The latitude/longitude values always appear at the bottom of the warning, between "LON" and "TIME". I had been using the regular expression: $stwarn =~ m/LON(.*)\nTIME/ but it doesn’t seem to work for all warnings.

Can anyone offer any better suggestions? Thanks!

]]> http://www.perlscriptsearch.com/perl-script/regular-expression-perl-perl-script/extracting-data-in-perl-with-regular-expressions/feed/ 1 How do I remove commas in a CSV value field with Perl regular expressions? http://www.perlscriptsearch.com/perl-script/regular-expression-perl-perl-script/how-do-i-remove-commas-in-a-csv-value-field-with-perl-regular-expressions/ http://www.perlscriptsearch.com/perl-script/regular-expression-perl-perl-script/how-do-i-remove-commas-in-a-csv-value-field-with-perl-regular-expressions/#comments Fri, 23 Apr 2010 00:21:17 +0000 Admin http://www.perlscriptsearch.com/perl-script/regular-expression-perl-perl-script/how-do-i-remove-commas-in-a-csv-value-field-with-perl-regular-expressions/ Record Line:

1,2,3,"four,for",5,"six,ssiixx","seven"

I want to remove the comma in "four,for" and "six,ssiixx". I tried using the $myValue =~ s/<regular_exp>/<replace_value>/g but I just end up replacing the string starting from the bad field to the last instance of a comma on the record.
Yahoo cut off my record string. Here it is again:

1,2,3,"four,for",5,"six,ssiixx","seven"
Once again, here is the full string with comma plus spacing afterwards:

1, 2, 3, "four, for", 5, "six, ssiixx", "seven"
I’m satisfied with raymanrevo’s answer but how do I choose "Best Answer"?

Here is a modified version of raymanrevo’s suggestion incorporating possible spacing:

$myValue =~ s/("[\w\ ]*),([\w\ ]*")//g;

Thank you raymanrevo! :)

]]> http://www.perlscriptsearch.com/perl-script/regular-expression-perl-perl-script/how-do-i-remove-commas-in-a-csv-value-field-with-perl-regular-expressions/feed/ 1 Perl – Regular expressions? http://www.perlscriptsearch.com/perl-script/regular-expression-perl-perl-script/perl-regular-expressions/ http://www.perlscriptsearch.com/perl-script/regular-expression-perl-perl-script/perl-regular-expressions/#comments Wed, 21 Apr 2010 23:15:20 +0000 Admin http://www.perlscriptsearch.com/perl-script/regular-expression-perl-perl-script/perl-regular-expressions/ I am asking about is that:
I want to save Regex rules in a file
and from the script(perl script) I want to match URL content with the rules in the file:S
Note:the file doesn’t content normal words, it content Regex rules
and i want to match the URL with each regex rule saved in the file
it’s like htaccess idea? is that possible?

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