I am using HP UX and think this may be done with awk but bot sure.
I have a file with a several header records and undeneath many detail records I need to put in the header record the number of detail records above this header record and number of detail records below this header record
Header... (5 Replies)
Hello guys,
I'm stuck with AWK and probably stupid stuff. :rolleyes:
I've a file with some values like:
123 456 10 11 90 39 20 ...........
Then, extracting these vaues from that file is quite simple:
tail -1 "filename"|awk '{printf $2}'
This will show: 456
Now, what I don't realize is... (5 Replies)
I want to remove text from nth position to nth position couple of times in same line
my line is
"hello is there anyone can help me with this question"
I need like this
ello is there anyone can help me with question
'h' is removed and 'this' removed from the line. I want to do this... (5 Replies)
I'm plowing through a bunch of text (and I have to use awk) and need to identify which position a certain string is in. Consider the two lines...
UP BROADCAST RUNNING SLAVE MULTICAST MTU:1372 Metric:1
UP LOOPBACK RUNNING MTU:16436 Metric:1
I can identify the line by searching for MTU:.... (3 Replies)
Hi guys.
I'd just like to know if its possible to change the actual line/row position in awk while its busy processing a file. In other words, is it possible to jump from line 10, back up to line 5 and continue processing line-by-line from then onwards? or is the way around this to add all lines... (3 Replies)
Hi Guys!
Could anyone help me with?..
I have a line which says
BCVGF%6$#900 .....How can we know which position is for % or say $ by command or script?There is any way to get a prompt by any script?
Thanks a lot (6 Replies)
i have a requirement like this
if the line contains from position 294 to 299 is equal to "prabhu" ,then print entire line .
i want to use awk
awk '{if(substr(294-299) == 'prabhu') print "line" }' filename (1 Reply)
hi guys,
i want command or script to display the content of file from 2nd position to last but one position of a file
abcdefghdasdasdsd
123,345,678,345,323
434,656,656,656,656
678,878,878,989,545
4565656667,65656
i want to display the same above file without first and... (2 Replies)
Good Day All
Im quiet new to ksh scripting and need a bit of your help. I am attempting to write a script that reads in an XML and extracts certain field values from an XML file. The values are all alphanumeric and consist of two components: e.g "Test 1".
I need to to create a script that... (2 Replies)
Discussion started by: JulioAmerica
2 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)