Hi there
With shell script I'm trying to split the string into two parts. One is alphanumeric part, the other one is a numeric part.
dummy_postcode_1 = 'SL1'
--> res_alpha = 'SL' and res_numeric = '1'
dummy_postcode_2 = 'S053'
--> res_alpha = 'S' and res_numeric = '053' ... (1 Reply)
Can someone tell me how to change the first column in a very large 17k line file from a random 10 digit numeric value to a non numeric value. The format of lines in the file is:
1702938475,SNU022,201004
the first 10 numbers always begin with 170 (6 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)
I am familiar with using tar and exclude/include files:
tar zcf backup.dirs.tgz --files-from=include.mydirs --exclude-from=exclude.mydirs --no-recursion
but was wondering if I could use find in the same way. I know that you can just specify the directories to exclude but my list is... (2 Replies)
I have a file of protein sequences with headers (my source file). Based on a list of IDs (which are included in some of the headers), I'd like to print out only the specified sequences, with only the ID as header.
In other words, I'd like to search source.txt for the terms in IDs.txt, and print... (3 Replies)
hi all,
Say i have a range like 0 - 1000 and i need to split into diffrent files the lines which are within a specific fixed sub-range. I can achieve this manually but is not scalable if the range increase.
E.g
cat file1.txt
Response time 2 ms
Response time 15 ms
Response time 101... (12 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)
Hi all,
I have the following entries in a file:
Cause Indicators=80 90
Cause Indicators=80 90
Cause Indicators=82 90
Cause Indicators=82 90
Cause Indicators=82 90
The first 2 digits might change so I am after a sort of grep which could find any first 2 digits + the second 2,... (3 Replies)
I'm trying to get some exclusions into our sendmail regular expression for the K command. The following configuration & regex works:
LOCAL_CONFIG
#
Kcheckaddress regex -a@MATCH
+<@+?\.++?\.(us|info|to|br|bid|cn|ru)
LOCAL_RULESETS
SLocal_check_mail
# check address against various regex... (0 Replies)
Discussion started by: RobbieTheK
0 Replies
LEARN ABOUT DEBIAN
graphviz::regex
GraphViz::Regex(3pm) User Contributed Perl Documentation GraphViz::Regex(3pm)NAME
GraphViz::Regex - Visualise a regular expression
SYNOPSIS
use GraphViz::Regex;
my $regex = '(([abcd0-9])|(foo))';
my $graph = GraphViz::Regex->new($regex);
print $graph->as_png;
DESCRIPTION
This module attempts to visualise a Perl regular expression. Understanding regular expressions is tricky at the best of times, and regexess
almost always evolve in ways unforseen at the start. This module aims to visualise a regex as a graph in order to make the structure clear
and aid in understanding the regex.
The graph visualises how the Perl regular expression engine attempts to match the regex. Simple text matches or character classes are
represented by.box-shaped nodes. Alternations are represented by a diamond-shaped node which points to the alternations. Repetitions are
represented by self-edges with a label of the repetition type (the nodes being repeated are pointed to be a full edge, a dotted edge points
to what to match after the repetition). Matched patterns (such as $1, $2, etc.) are represented by a 'START $1' .. 'END $1' node pair.
This uses the GraphViz module to draw the graph.
METHODS
new
This is the constructor. It takes one mandatory argument, which is a string of the regular expression to be visualised. A GraphViz object
is returned.
my $graph = GraphViz::Regex->new($regex);
as_*
The regex can be visualised in a number of different graphical formats. Methods include as_ps, as_hpgl, as_pcl, as_mif, as_pic, as_gd,
as_gd2, as_gif, as_jpeg, as_png, as_wbmp, as_ismap, as_imap, as_vrml, as_vtx, as_mp, as_fig, as_svg. See the GraphViz documentation for
more information. The two most common methods are:
# Print out a PNG-format file
print $g->as_png;
# Print out a PostScript-format file
print $g->as_ps;
BUGS
Note that this module relies on debugging information provided by Perl, and is known to fail on at least two versions of Perl: 5.005_03 and
5.7.1. Sorry about that - please use a more recent version of Perl if you want to use this module.
AUTHOR
Leon Brocard <acme@astray.com>
COPYRIGHT
Copyright (C) 2000-1, Leon Brocard
This module is free software; you can redistribute it or modify it under the same terms as Perl itself.
perl v5.14.2 2012-04-02 GraphViz::Regex(3pm)