For a programming exercise, I am mean to design a Perl script that detects double letters in a text file.
I tried the following expressions
# Check for any double letter within the alphabet
/+/
# Check for any repetition of an alphanumeric character
/\w+/
Im aware that the... (8 Replies)
Hi,
Can anyone help me to find regular expression for the following in Perl?
"The string can only contain lower case letters (a-z) and no more than one of any letter."
For example: "table" is accepted, whether "dude" is not.
I have coded like this:
$str = "table";
if ($str =~ m/\b()\b/) {... (4 Replies)
I have got numbers like
l255677
l376039
l188144
l340482
l440700
l254113
to match the numbers starting with '13' what would be the regex
=~/13(.*)/ =======>This is not working ....
But for user123,user657
regex =~/user(.*)/ ========>works
Thanks for help..!! (7 Replies)
I am having trouble parsing rpm filenames in a shell script.. I found a snippet of perl code that will perform the task but I really don't have time to rewrite the entire script in perl. I cannot for the life of me convert this code into something sed-friendly:
if ($rpm =~ /(*)-(*)-(*)\.(.*)/)... (1 Reply)
Hi,
I get the following when I cat a file *.log
xxxxx
=====
dasdas gwdgsg fdsagfsag agsdfag
=====
random data
=====
My output should look like :
If the random data after the 2nd ==== is null then OK should be printed else
the random data should be printed.
How do I go about this... (5 Replies)
HI,
I'm new to perl and need simple regex for reading a file using my perl script.
The text file reads as -
filename=/pot/uio/current/myremificates.txt
certificates=/pot/uio/current/userdir/conf/user/gamma/settings/security/... (3 Replies)
Hi Guys
I have the following regex
$OSRELEASE = $1 if ($output =~ /(Mac OS X (Server )?10.\d)/);
output is currently
Mac OS X 10.7.5
when the introduction of Mac 10.8 output changes to
OS X 10.8.2
they have dropped the Mac bit so i changed the regex to be (2 Replies)
Could anyone please make me understand how the ?= works below ..
After executing this I am getting the same output.
$string="I love chocolate.";
$string =~ s/chocolate(?= ice)/vanilla/;
print "$string\n"; (2 Replies)
I am not a big expert in regex and have just little understanding of that language.
Could you help me to understand the regular Perl expression:
^(?!if\b|else\b|while\b|)(?:+?\s+){1,6}(+\s*)\(*\) *?(?:^*;?+){0,10}\{
------
This is regex to select functions from a C/C++ source and defined in... (2 Replies)
Experts -
I found a script on one of the servers that I work on and I need help understanding
one of the lines.
I know what the script does, but I'm having a hard time understanding the grouping.
Can someone help me with this?
Here's the script...
#!/usr/bin/perl
use strict;
use... (2 Replies)
Discussion started by: timj123
2 Replies
LEARN ABOUT SUSE
net::server::proto::ssl
Net::Server::Proto::SSL(3) User Contributed Perl Documentation Net::Server::Proto::SSL(3)NAME
Net::Server::Proto::SSL - Net::Server SSL protocol.
SYNOPSIS
See Net::Server::Proto.
DESCRIPTION
Experimental. If anybody has any successes or ideas for improvment under SSL, please email <paul@seamons.com>.
Protocol module for Net::Server. This module implements a secure socket layer over tcp (also known as SSL). See Net::Server::Proto.
There is a limit inherent from using IO::Socket::SSL, namely that only one SSL connection can be maintained by Net::Server. However,
Net::Server should also be able to maintain any number of TCP, UDP, or UNIX connections in addition to the one SSL connection.
Additionally, getline support is very limited and writing directly to STDOUT will not work. This is entirely dependent upon the
implementation of IO::Socket::SSL. getline may work but the client is not copied to STDOUT under SSL. It is suggested that clients
sysread and syswrite to the client handle (located in $self->{server}->{client} or passed to the process_request subroutine as the first
argument).
PARAMETERS
In addition to the normal Net::Server parameters, any of the SSL parameters from IO::Socket::SSL may also be specified. See
IO::Socket::SSL for information on setting this up.
BUGS
Christopher A Bongaarts pointed out that if the SSL negotiation is slow then the server won't be accepting for that period of time (because
the locking of accept is around both the socket accept and the SSL negotiation). This means that as it stands now the SSL implementation
is susceptible to DOS attacks. To fix this will require deviding up the accept call a little bit more finely which may not yet be possible
with IO::Socket::SSL. Any ideas or patches on this bug are welcome.
LICENCE
Distributed under the same terms as Net::Server
THANKS
Thanks to Vadim for pointing out the IO::Socket::SSL accept was returning objects blessed into the wrong class.
perl v5.12.1 2007-02-03 Net::Server::Proto::SSL(3)