Hello,
I looking to use grep to return a string with exactly n matches.
I'm building off this:
ls -aLl /bin | grep '^.\{9\}x' | tr -s ' '
-rwxr-xr-x 1 root root 632816 Nov 25 2008 vi
-rwxr-xr-x 1 root root 632816 Nov 25 2008 view
-rwxr-xr-x 1 root root 16008 May 25 2008... (7 Replies)
Hello,
Thanks in advance for the query.
There is a log file abcd.log which has multible line like this.
"hello1" , "hello2", "hello3" , "hello4" , "hello5"
I want to grep for the lines which has "hello4" & "hello5" and use "hello2" to grep the same log file again.
All these should... (8 Replies)
Hello Everyone,
I just started scripting this week. I have no background in programming or scripting.
I'm working on a script to grep for a variable in a log file
Heres what the log file looks like. The x's are all random clutter
xxxxxxxxxxxxxxxxxxxxx START: xxxxxxxxxxxx... (7 Replies)
Hi,
I have two variables x and y.
i need to find a particular string in a file, a workflow name and then insert the values of x and y into the next lines of the workflow name.
basically it is like as below
wf_xxxxxx
$$a=
$$b=
$$c= figo
$$d=bentley
i need to grep the 'wf_xxxx' and then... (6 Replies)
I am attempting to grep an exact string from a series of files within a directory and append that output to the filename when it is present in the file. I've been after this all day with no luck. Thanks for your help in advance :wall:. (4 Replies)
Hi,
I have a list of zipped files. I want to grep for a string in all files and get a list of file names that contain the string. But without unzipping them before that, more like using something like gzcat.
My OS is:
SunOS test 5.10 Generic_142900-13 sun4u sparc SUNW,SPARC-Enterprise (8 Replies)
Hi ,
am getting output file, it sontains the below values.
./hawk_DOM1_FIRST_ENV
./hawk_DOM2_SECOND_ENV
./hawk_DOM3_THIRD_ENV
Now I need to grep the word "DOM1_FIRST_ENV","DOM2_SECOND_ENV"
like that.
I tired with cut -d "_". Its not working with any deleimiter.
Can you please help to... (3 Replies)
I have a large dataset with following structure;
C 0001 Carbon
D SAR001 methane
D SAR002 ethane
D SAR003 propane
D SAR004 butane
D SAR005 pentane
C 0002 Hydrogen
C 0003 Nitrogen
C 0004 Oxygen
D SAR011 ozone
D SAR012 super oxide
C 0005 Sulphur
D SAR013... (3 Replies)
For example: I am grepping "Hello" from a file and there are 10 matches. So all ten lines with match will get stored into a variable($match). Now I want to ignore those lines which have "Hi" present in that.
Currently I tried this: match = grep "Hello" file | grep -v "Hi" file
But that's not... (2 Replies)
Discussion started by: pavan
2 Replies
LEARN ABOUT DEBIAN
io::async::routine
IO::Async::Routine(3pm) User Contributed Perl Documentation IO::Async::Routine(3pm)NAME
"IO::Async::Routine" - execute code in an independent sub-process
SYNOPSIS
use IO::Async::Routine;
use IO::Async::Channel;
use IO::Async::Loop;
my $loop = IO::Async::Loop->new;
my $nums_ch = IO::Async::Channel->new;
my $ret_ch = IO::Async::Channel->new;
my $routine = IO::Async::Routine->new(
channels_in => [ $nums_ch ],
channels_out => [ $ret_ch ],
code => sub {
my @nums = @{ $nums_ch->recv };
my $ret = 0; $ret += $_ for @nums;
# Can only send references
$ret_ch->send( $ret );
},
on_finish => sub {
say "The routine aborted early - $_[-1]";
$loop->stop;
},
);
$loop->add( $routine );
$nums_ch->send( [ 10, 20, 30 ] );
$ret_ch->recv(
on_recv => sub {
my ( $ch, $totalref ) = @_;
say "The total of 10, 20, 30 is: $$totalref";
$loop->stop;
}
);
$loop->run;
DESCRIPTION
This subclass of IO::Async::Process contains a body of code and executes it in a sub-process, allowing it to act independently of the main
program. Once set up, all communication with the code happens by values passed into or out of the Routine via IO::Async::Channel objects.
Because the code running inside the Routine runs within its own process, it is isolated from the rest of the program, in terms of memory,
CPU time, and other resources, and perhaps most importantly in terms of control flow. The code contained within the Routine is free to make
blocking calls without stalling the rest of the program. This makes it useful for using existing code which has no option not to block
within an "IO::Async"-based program.
To create asynchronous wrappers of functions that return a value based only on their arguments, and do not generally maintain state within
the process it may be more convenient to use an IO::Async::Function instead, which uses an "IO::Async::Routine" to contain the body of the
function and manages the Channels itself.
PARAMETERS
The following named parameters may be passed to "new" or "configure":
channels_in => ARRAY of IO::Async::Channel
ARRAY reference of "IO::Async::Channel" objects to set up for passing values in to the Routine.
channels_out => ARRAY of IO::Async::Channel
ARRAY reference of "IO::Async::Channel" objects to set up for passing values out of the Routine.
code => CODE
CODE reference to the body of the Routine, to execute once the channels are set up.
METHODS
This class provides no additional methods, other than those provided by IO::Async::Process.
AUTHOR
Paul Evans <leonerd@leonerd.org.uk>
perl v5.14.2 2012-10-24 IO::Async::Routine(3pm)