Hi All,
I have an input below. If the term in the 1st column is equal, print the last row which 1st column is equal.In the below example, it's " 0001 k= 27 " and " 0004 k= 6 " (depicted in bold). Those terms in 1st column which are not repetitive are to be printed as well. Can any body help me... (9 Replies)
Hi, I am totally new to shell scripting.
I have a String "c:\working\html\index.txt.12-12-2009.bkp" I want to check if the string has more than one "." character. If it does I would like to retrieve only "c:\working\html\index.txt" i.e, discard the second occurrence of "." and the rest of the... (7 Replies)
Hi all,
I have a lot of files with extension ".o" and I would like to extract the 10th line after (last) occurrence of a given string in each of the files.
I tried:
$ grep "string_to_look_for" *.o -A 10 | tail -1
but it gives the occurrence in the last file with extension .o
... (1 Reply)
Lets say I have file.txt:
(Product:Price:QuantityAvailable) (: as delimiter)
Chocolate:5:5
Banana:33:3
I am doing a edit/update function.
I want to change the Quantity Available, so I tried using the SED command to replace 5, but my Price which is also 5 is changed instead.
(for the Banana... (13 Replies)
Hi, i have file f1.txt with data like:
CHECK
a
b
CHECK
c
d
CHECK
e
f
JOB_START
....
I want to match the last occurrence of 'CHECK' until the end of the file.
I can use awk:
awk '/^CHECK/ { buf = "" } { buf = buf "\n" $0 } END { print buf }' f1.txt | tail +2Is there a cleaner way of... (2 Replies)
hey guys, i have been trying to work this thing out with sed with no luck :confused:
i m looking for a way to replace only the first occurrence after a match
for example :
Cat
Realized what you gotta do
Dog
Realized what you gotta do
Sheep
Realized what you gotta do
Wolf
Realized... (6 Replies)
echo 'String#1 and String#2' | egrep -o -m 1 'String#.{1}'
String#1
String#2
I'm trying to just match the first occurrence of 'String#' + 1 character. I thought the "-m 1" switch would do that for me. Instead I get both occurrences. Can somebody provide some insight?
Thanks! (5 Replies)
I need help with extract/print lines till stop pattern. This needs to happen after every 3rd occurrence of start pattern and continue till end of file. Consider below is an example of the log file. my start pattern will be every 3rd occurrence of ERROR_FILE_NOT_FOUND and stop pattern will be... (5 Replies)
Hi all,
I have an input file as below. I would like to count the occurrence of pattern matching 8th field for each line.
Input:
field_01 field_02 field_03 field_04 field_05 field_06 field_07 field_08
TA T TA T TA TA TA... (3 Replies)
AWK command to get file content until 3 occurrence of pattern match,
INPUT FILE:
JMS_BODY_FIELD:JMSText = <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<custOptIn xmlns="http://com/walm/ta/cu/ccs/xml2">
<person>Romi</person>
<appName>SAP</appName>
</custOptIn>
... (4 Replies)
Discussion started by: prince1987
4 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)