How do you negate a literal hyphen/dash in a regex? If it's the first character inside the brackets, then it is read literally.
But if you stick a caret to the left of it, to negate it, then it seems it is no longer read literally. Or whatever, it doesn't work.
Nor does escaping it seem to work.
I can't figure this out, and surprisingly, I couldn't come up with anything online. It seems most people are trying to accept hyphens in their regexes, but I am trying to eliminate hyphenated words from my results. No doubt I am missing something obvious and simple.
I want to search a heap of files but using an either OR or AND condition for two or more strings. How can I do this?
i.e. file1 has the following
file testfile primary
and file2 has this ...
file testfile2 secondary
If I use this ...
find . -type f -exec grep "testfile" {}... (2 Replies)
I have a .txt file which contains several lines of text. I need to write a script program using grep or any other unix tool so as to detect part of the text (words) between / / that begin with the symbol ~.
For example if somewhere in the text appears a webpage address like... (8 Replies)
I have been trying to find files containing the words AAA, BBB and CCC.
I tried:
grep AAA `grep BBB files*` grep CCC files*
but is does not work
I tried several ways
this is an easy one but I am a dummy, Does anyone can help me?
Thanks
:( (12 Replies)
I have a file that has multiple lines separated by an asterisk as a delimiter:
FILE.txt
A*123*BCD*456*TOM
A*789*EFG*947*CHRIS
A*840*BCD*456*TOM
I would like to search multiple files for the strings 'BCD' AND 'TOM' and return the number of lines, per file, that match these two reg... (2 Replies)
Hi,
By using shell scripit i have save output in one file. I want to grep two words named CLUSTER and CLUSQMGR from that output file. How to grep that. output file would be having below words
TYPE(QCLUSTER) ALTDATE(2010-05-17)
CLUSTER(QS.CL.MFT1) ... (5 Replies)
Queue on node in domain
description :
type : local
max message len : 104857600
max queue depth : 5000
queue depth max event : enabled
persistent msgs : yes
backout threshold : 0
msg delivery seq :... (4 Replies)
Hi,
I want to grep a file if any one (GH, IJ, KL) is not null. If it is null i dont want to pull anything.
cat file | awk '{print ($1)}'
Parameters are : AB=123;CD=456;EF=6789;
cat file | awk '{print ($2)}'
GH=456;IJ=789;KL=1011
eg:
Contents in file:
Parameters are :... (10 Replies)
Hi!
I'm trying to figure out how to find words with X number of doubles, only. I'm searching a dictionary, (one word per line). For instance, if you want to find words containing only one pair of double letters, you could do something like this:
egrep '(.)\1' wordlist.txt |egrep -v '(.)\1.*(.)\2'... (3 Replies)
see I have a text like:
27-MAY 14:00 4 aaa 5.30 0.01
27-MAY 14:00 3 aaa 0.85 0.00
27-MAY 14:00 2 aaa 1.09 0.00
27-MAY 14:00 5 aaa 0.03 0.00
27-MAY 14:00... (3 Replies)
Discussion started by: netbanker
3 Replies
LEARN ABOUT SUSE
encode::alias
Encode::Alias(3pm) Perl Programmers Reference Guide Encode::Alias(3pm)NAME
Encode::Alias - alias definitions to encodings
SYNOPSIS
use Encode;
use Encode::Alias;
define_alias( newName => ENCODING);
DESCRIPTION
Allows newName to be used as an alias for ENCODING. ENCODING may be either the name of an encoding or an encoding object (as described in
Encode).
Currently newName can be specified in the following ways:
As a simple string.
As a qr// compiled regular expression, e.g.:
define_alias( qr/^iso8859-(d+)$/i => '"iso-8859-$1"' );
In this case, if ENCODING is not a reference, it is "eval"-ed in order to allow $1 etc. to be substituted. The example is one way to
alias names as used in X11 fonts to the MIME names for the iso-8859-* family. Note the double quotes inside the single quotes.
(or, you don't have to do this yourself because this example is predefined)
If you are using a regex here, you have to use the quotes as shown or it won't work. Also note that regex handling is tricky even for
the experienced. Use this feature with caution.
As a code reference, e.g.:
define_alias( sub {shift =~ /^iso8859-(d+)$/i ? "iso-8859-$1" : undef } );
The same effect as the example above in a different way. The coderef takes the alias name as an argument and returns a canonical name
on success or undef if not. Note the second argument is not required. Use this with even more caution than the regex version.
Changes in code reference aliasing
As of Encode 1.87, the older form
define_alias( sub { return /^iso8859-(d+)$/i ? "iso-8859-$1" : undef } );
no longer works.
Encode up to 1.86 internally used "local $_" to implement ths older form. But consider the code below;
use Encode;
$_ = "eeeee" ;
while (/(e)/g) {
my $utf = decode('aliased-encoding-name', $1);
print "position:",pos,"
";
}
Prior to Encode 1.86 this fails because of "local $_".
Alias overloading
You can override predefined aliases by simply applying define_alias(). The new alias is always evaluated first, and when necessary,
define_alias() flushes the internal cache to make the new definition available.
# redirect SHIFT_JIS to MS/IBM Code Page 932, which is a
# superset of SHIFT_JIS
define_alias( qr/shift.*jis$/i => '"cp932"' );
define_alias( qr/sjis$/i => '"cp932"' );
If you want to zap all predefined aliases, you can use
Encode::Alias->undef_aliases;
to do so. And
Encode::Alias->init_aliases;
gets the factory settings back.
SEE ALSO
Encode, Encode::Supported
perl v5.12.1 2010-04-26 Encode::Alias(3pm)