More common practice for processing the fields is a for loop.
The following does not print a trailing space.
A % in the input would confuse printf. More robust is
Hi,
If i have a file with xml format, i would like to remove duplicated records and save to a new file. Is it possible...to write script to do it? (8 Replies)
Hi
Just wondering whether or not I can remove duplicated lines without sort
For example, I use the command who, which shows users who are logging on. In some cases, it shows duplicated lines of users who are logging on more than one terminal.
Normally, I would do
who | cut -d" " -f1 |... (6 Replies)
hi all,
i have a file contain multicolumns, this file is sorted by col2 and col3.
i want to remove the duplicated columns if the col2 and col3 are the same in another line.
example
fileA
AA BB CC DD
CC XX CC DD
BB CC ZZ FF
DD FF HH HH
the output is
AA BB CC DD
BB CC ZZ FF... (6 Replies)
I have a text file with delimiter "|" and sometimes the zipcode is in "5th" column or "6th" column. I want to scan the file and remove the "-2323" from the zipcode which has zip+4 digits
From
blah|blah|foo|bar||blah|945523-232|USA
blah|blah|foo|bar||blah|foo|94555-2323|USA
To... (8 Replies)
Hii i have a file with data as shown below. Here i need to remove duplicates of the rows in such a way that
it just checks for 2,3,4,5 column for duplicates.When deleting duplicates,retain largest row i.e with many columns with values should be selected.Then it must remove duplicates such that by... (11 Replies)
hello, I have a large file (about 1gb) that is in a file similar to the following:
I want to make it so that I can put all the duplicates where column 3 (delimited by the commas) are shown on top. Meaning all people with the same age are listed at the top.
The command I used was ... (3 Replies)
Hi,
I have the following output from an Oracle SQL statement and I want to remove duplicated column values.
I know it is possible using Oracle analytical/statistical functions but unfortunately I don't know how to use any of those.
So now, I've gone to PLAN B using awk/sed maybe or any... (5 Replies)
Please help me to get required output for both scenario 1 and scenario 2 and need separate code for both scenario 1 and scenario 2
Scenario 1
i need to do below changes only when column1 is CR and column3 has duplicates rows/values. This inputfile can contain 100 of this duplicated rows of... (1 Reply)
Discussion started by: as7951
1 Replies
LEARN ABOUT DEBIAN
io::async::pid
IO::Async::PID(3pm) User Contributed Perl Documentation IO::Async::PID(3pm)NAME
"IO::Async::PID" - event callback on exit of a child process
SYNOPSIS
use IO::Async::PID;
use POSIX qw( WEXITSTATUS );
use IO::Async::Loop;
my $loop = IO::Async::Loop->new;
my $kid = $loop->fork(
code => sub {
print "Child sleeping..
";
sleep 10;
print "Child exiting
";
return 20;
},
);
print "Child process $kid started
";
my $pid = IO::Async::PID->new(
pid => $kid,
on_exit => sub {
my ( $self, $exitcode ) = @_;
printf "Child process %d exited with status %d
",
$self->pid, WEXITSTATUS($exitcode);
},
);
$loop->add( $pid );
$loop->run;
DESCRIPTION
This subclass of IO::Async::Notifier invokes its callback when a process exits.
For most use cases, a IO::Async::Process object provides more control of setting up the process, connecting filehandles to it, sending data
to and receiving data from it.
EVENTS
The following events are invoked, either using subclass methods or CODE references in parameters:
on_exit $exitcode
Invoked when the watched process exits.
PARAMETERS
The following named parameters may be passed to "new" or "configure":
pid => INT
The process ID to watch. Must be given before the object has been added to the containing "IO::Async::Loop" object.
on_exit => CODE
CODE reference for the "on_exit" event.
Once the "on_exit" continuation has been invoked, the "IO::Async::PID" object is removed from the containing "IO::Async::Loop" object.
METHODS
$process_id = $pid->pid
Returns the underlying process ID
$pid->kill( $signal )
Sends a signal to the process
AUTHOR
Paul Evans <leonerd@leonerd.org.uk>
perl v5.14.2 2012-10-24 IO::Async::PID(3pm)