Need some help with a regex if loop problem.
File1:
I want to print "Zero" if the number ends with a zero, but print "number" if it does not!
this code just prints out "Number" for each line! Help!
Hi,
I am trying to do something with grep, but for some reason I just can't get it to to work.
I am looking for find a match in the second field, the length must be 10 characters and end with 'abc'.
The file is in this format:
<int><tab><field2>
I've tried a few patterns, some work,... (2 Replies)
Hi,
Can someone tell me why the first regular expression with the + fails to match the input string?
SUN /web>echo cat | grep '+'
SUN /web>echo cat | grep ''
cat
I'm running SunOS 5.10
Thanks.
Chris (2 Replies)
Hi there,
How can we use regex in perl to store the Route Distinguisher (the bold field) and also the underlined and bold lines in the below file?
Note:
These highlighted pattern is redundant through the whole input file. Basically, we just need to extract these fields at least to store them... (4 Replies)
Hi,
I tried to extract the time from `date` with sed.
(I know it works with `date +%H:%M:%S` as well)
I got three solutions of which just one worked. I thought "+" should repeat the previous expression 1 or more times and {n} should repeat the previous expression n times.
$ date
Thu... (9 Replies)
hi everyone
suppose my input file is
ABC-12345
ABCD-12345
BCD-123456
i want to search the specific pattern which looks like
-
in a file so i used this command
cat $file | awk ' { if ($0 ~ /-/) { print } }'
so it gives me the result as
ABCD-12345
BCD-12345
BCD-12345
... (31 Replies)
Hi,
I am looking for regex to extract following words from text:
The word which comes after "Replaced" means
Replaced disk
Replaced floppy
Replaced memory
Please suggest the regex for it.
Thanks! (4 Replies)
I have a file1.txt with several 100k lines, each of which has a column 9 containing one of 60 "label" identifiers. Using an labels.txt file containing a list of labels, I'd like to extract 200 random lines from file1.txt for each of the labels in index.txt.
Using a contrived mini-example:
$ cat... (8 Replies)
I am trying to do in a single line to take a list of paths separated by whitespace and then loop thru all the paths that were wrote but my regex is not working,
I have
echo {3} | sed 's/ //g' | while read EACHFILE
do
.....
But for some reason is only taking always the first path that I... (7 Replies)
Script logs into switches on my list but nothing seems to happen.
Following error:
tr nope, doesn't (yet) match (?-xism:-]+ ?(?:\(config*\))? ? ?$)
du SEEN:
Here is code in question:
@version_info = $session_obj->cmd('term length 0');
$session_obj->cmd('show int | i... (5 Replies)
Discussion started by: mrlayance
5 Replies
LEARN ABOUT DEBIAN
acme::brainfuck
Acme::Brainfuck(3) User Contributed Perl Documentation Acme::Brainfuck(3)NAME
Acme::Brainfuck - Embed Brainfuck in your perl code
SYNOPSIS
#!/usr/bin/env perl
use Acme::Brainfuck;
print 'Hello world!', chr ++++++++++. ;
DESCRIPTION
Brainfuck is about the tiniest Turing-complete programming language you can get. A language is Turing-complete if it can model the opera-
tions of a Turing machine--an abstract model of a computer defined by the British mathematician Alan Turing in 1936. A Turing machine con-
sists only of an endless sequence of memory cells and a pointer to one particular memory cell. Yet it is theoretically capable of perform-
ing any computation. With this module, you can embed Brainfuck instructions delimited by whitespace into your perl code. It will be trans-
lated into Perl as parsed. Brainfuck has just just 8 instructions (well more in this implementation, see "Extensions to ANSI Brainfuck"
below.) which are as follows
Instructions
+ Increment
Increase the value of the current memory cell by one.
- Decrement
Decrease the value of the current memory cell by one.
> Forward
Move the pointer to the next memory cell.
< Back
Move the pointer to the previous memory cell.
, Input
Read a byte from Standard Input and store it in the current memory cell.
. Output
Write the value of the current memory cell to standard output.
[ Loop
If the value of the current memory cell is 0, continue to the cell after the next ']'.
] Next
Go back to the last previous '['.
Extensions to ANSI Brainfuck
This implementation has extra instructions available. In order to avoid such terrible bloat, they are only available if you use the ver-
bose pragma like so:
use Acme::Brainfuck qw/verbose/;
The extra instructions are:
~ Reset
Resets the pointer to the first memory cell and clear all memory cells.
# Peek
Prints the values of the memory pointer and the current memory cell to STDERR. See also "Debugging" below.
Debugging
By using the debug pragma like this:
use Acme::Brainfuck qw/debug/;
you can dump out the generated perl code. (Caution: it is not pretty.) The key to understanding it is that the memory pointer is repre-
sented by $p, and the memory array by @m Therefore the value of the current memory cell is $m[$p].
RETURN VALUE
Each sequence of Brainfuck instructions becomes a Perl block and returns the value of the current memory cell.
EXAMPLES
JABH
#!/usr/bin/env perl
use Acme::Brainfuck;
print "Just another ";
++++++[>++++++++++++++++<-]>
++.--
>+++[<++++++>-]<.>[-]+++[<------>-]<
+.-
+++++++++.---------
++++++++++++++.--------------
++++++.------
>+++[<+++++++>-]<.>[-]+++[<------->-]<
+++.---
+++++++++++.-----------
print " hacker.
";
Countdown
#!/usr/bin/env perl
use strict;
use Acme::Brainfuck qw/verbose/;
print "Countdown commencing...
";
++++++++++[>+>+<<-]
>>+++++++++++++++++++++++++++++++++++++++++++++++<<
++++++++++[>>.-<.<-]
print "We have liftoff!
";
Reverse
#!/usr/bin/env perl
use Acme::Brainfuck qw/verbose/;
while(1)
{
print "Say something to Backwards Man and then press enter: ";
+[->,----------]<
print 'Backwards Man says, "';
[+++++++++++.<]<
print "" to you too.
";
~
}
Math
#!/usr/bin/env perl
use Acme::Brainfuck;
use strict;
use warnings;
my $answer = +++[>++++++<-]> ;
print "3 * 6 = $answer
";
VERSION
1.1.1 Apr 06, 2004
AUTHOR
Jaldhar H. Vyas E<lt>jaldhar@braincells.comE<gt>
THANKS
Urban Mueller - The inventor of Brainfuck.
Damian Conway - For twisting perl to hitherto unimaginable heights of weirdness.
Marco Nippula <http://www.hut.fi/~mnippula/> - Some code in this module comes from his brainfuck.pl
Mr. Rock - Who has a nice Brainfuck tutorial at <http://www.cydathria.com/bf/>. Some of the example code comes from there.
COPYRIGHT AND LICENSE
Copyright (c) 2004, Consolidated Braincells Inc.
Licensed with no warranties under the Crowley Public License:
"Do what thou wilt shall be the whole of the license."
perl v5.8.3 2004-04-06 Acme::Brainfuck(3)