help on UniQ

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1. Shell Programming and Scripting

Uniq help

hello I want to check on first column duplicates and print the unique first and second columns My trial output is not generating what I needed, i.e the second column. thanks in advance

2. OS X (Apple)

Hello, I have recently imported all my scripts into OS X. There is one unix command that is problematic in the new environment: sort temp7.txt | uniq -u -w4 > temp8.txt The system doesn't seem to like the -w tag. Is there an alternative command? Here is the objective: Data: 1234 aaa...

3. Shell Programming and Scripting

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I have a master list of servers. I also have a list of servers I'm not supposed to touch. I'm trying to filter out the list servers that I'm not supposed to touch from the master list of servers, so I will have a "master list of servers I can touch". When I try to filter these I'm not getting...

4. Shell Programming and Scripting

uniq commmand

Hi I'm having a file (extract.txt) which contains lots of repeated values i want to extract it only with unique values,while am using the the uniq command It result's with 1510 lines this too have the duplicates,pls help me on this. I attached my extract.txt file as attachment here. ...

5. Shell Programming and Scripting

uniq -c

When I do uniq -c on a list of sorted numbers, for eg: 1 1 2 2 2 3 3 4 It outputs 2 1 3 2 2 3 1 4. Now, is there a way to sort on the column that "uniq -c" produced?

6. Shell Programming and Scripting

Keep the last uniq record only

Hi folks, Below is the content of a file 'tmp.dat', and I want to keep the uniq record (key by first column). However, the uniq record should be the last record. 302293022|2|744124889|744124889 302293022|3|744124889|744124889 302293022|4|744124889|744124889 302293022|5|744124889|744124889...

7. Shell Programming and Scripting

Help with uniq command

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8. UNIX for Dummies Questions & Answers

Difference between plain "uniq" and "uniq -u"

Dear all, It's not entirely clear to me from manpage the difference between them. Why we still need "-u" flag? - monkfan

9. Shell Programming and Scripting

How to use uniq on a certain field?

How can I use uniq on a certain field or what else could I use? If I want to use uniq on the second field and the output would remove one of the lines with a 5. bob 5 hand jane 3 leg jon 4 head chris 5 lungs

10. Shell Programming and Scripting

who - uniq output

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io::async::detachedcode

IO::Async::DetachedCode(3pm)				User Contributed Perl Documentation			      IO::Async::DetachedCode(3pm)

NAME

       "IO::Async::DetachedCode" - execute code asynchronously in child processes

SYNOPSIS

       This object is used indirectly via the "IO::Async::Loop"'s "detach_code" method.

	use IO::Async::Loop;
	my $loop = IO::Async::Loop->new;

	my $code = $loop->detach_code(
	   code => sub {
	      my ( $number ) = @_;
	      return is_prime( $number );
	   }
	);

	$code->call(
	   args => [ 123454321 ],
	   on_return => sub {
	      my $isprime = shift;
	      print "123454321 " . ( $isprime ? "is" : "is not" ) . " a prime number
";
	   },
	   on_error => sub {
	      print STDERR "Cannot determine if it's prime - $_[0]
";
	   },
	);

	$loop->run;

DESCRIPTION

       This object class provides a legacy compatibility layer for existing code that tries to construct such an object. It should not be used for
       new code; see instead the IO::Async::Function object, for which this is now a wrapper.

CONSTRUCTOR

   $code = $loop->detach_code( %params )
       This function returns a new instance of a "IO::Async::DetachedCode" object.  The %params hash takes the following keys:

       code => CODE
	       A block of code to call in the child process.

       stream
       marshaller
	       These arguments are no longer used; any values passed will be ignored.

       workers => INT
	       Optional integer, specifies the number of parallel workers to create.

	       If not supplied, 1 is used.

       exit_on_die => BOOL
       setup => ARRAY
	       Passed through to the underlying "IO::Async::Function" object.

METHODS

   $code->call( %params )
       Calls one invocation of the contained function code block. See the "call" method on "IO::Async::Function" for more detail.

   $code->shutdown
       This method requests that the detached worker processes stop running.

   $n_workers = $code->workers
       This method in scalar context returns the number of workers currently running.

   @worker_pids = $code->workers
       This method in list context returns a list of the PID numbers of all the currently running worker processes.

AUTHOR

       Paul Evans <leonerd@leonerd.org.uk>

perl v5.14.2							    2012-10-24					      IO::Async::DetachedCode(3pm)

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