Welcome to the forum. In the future, please provide some sample of the data being worked with (feel free to obfuscate sensitive info, so long as the format isn't affected). With nothing to go on, here's my shot in the dark (i've assumed the data is a comma-delimited file):
Regards,
Alister
Last edited by alister; 03-27-2010 at 07:26 PM..
Reason: fix off by one bug
I want to select the first column from a daily file called foo.csv. The result is written to file foo.txt. Currently the following script is used for that:
cut -d, -f 1 foo.csv > foo.txt
A typical result would yield :
A12
A45
B11
B67
What needs to happen in addition is that two columns... (5 Replies)
Hi,
I wanted to add specific text to each row in a text file containing three rows. Example:
0 8 7 6 5 5
7 8 9 0 7 9
7 8 9 0 1 2
And I want to add a 21 at the beginning of the first row, and blank spaces at the beginning of the second two rows. To get this:
21 0 8 7 6 5 5
7 8... (4 Replies)
Hi everybody,
I've got two simples file1 like:
aaa aaa aaa
bbb bbb bbb
ccc ccc ccc
and file2 like:
111 111 111
222 222 222
333 333 333
I need to:
1) add a line say "new line" as the first line of the file
2)add a column from file2 (say column3) to file1; the new column should... (14 Replies)
I am attempting to insert multiple lines of text into a specific place in a text file based on the lines above or below it.
For example, Here is a portion of a zone file.
IN NS ns1.domain.tld.
IN NS ns2.domain.tld.
IN ... (2 Replies)
Hi All ,
Kindly help me with this soln
awk '{printf "%s %7s \n", $1,$c}' infile
where
value of variable c I am externally giving input
But executing the above command shows all the columns of infile where as I want only 1st column of infile and 2nd column should print value c (8 Replies)
Hello,
I have a comma separated flat file. It contains some 20 columns. I want to add two new columns at position 2,3. So that file will have 22 columns. I am providing here sample data with file having 4 columns. Appreciate your help in finding solution for this.
data in input file:... (11 Replies)
I have a text file that has three columns. But at the end of the text file, there are trailing lines that have missing second and third columns:
4 0.04972604 KLHL28
4 0.0497332 CSTB
4 0.04979822 AIF1
4 0.04983331 DECR2
4 0.04990344 KATNB1
4
4
4
4
How can I remove the trailing... (3 Replies)
I have a file in which I need to add more columns to based on a key in the first file:
File1
key1,abc,123,
key2,def,456,
key3,ghi,789,
File2
key2,zyx,111,qqq,
key3,yuu,222,www,
key1,pui,333,eee,
key4,xxx,999,rrr,
I would like to create the following output:
Output (1 Reply)
Hello,
I am very now to this, hope you can help,
I am looking into editing a file in Solaris, with dinamic collums (lenght varies) and I need 2 things to be made, the fist is to filter the first column and third column from the file bellow file.txt, and create a new file with the 2 filtered... (8 Replies)
Hello,
Can someone please help in below requirement.
My requirement is to add date before to first column,some text before 1st,2nd coulmns and insert a new column in between 2 and 3 columns.
input file.
aa 123 dddd
aa 667 kdkdk
ddj 738 kkkk
aa 123 dddd
aa 667 ... (5 Replies)
Discussion started by: Cva2568
5 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)