Dear Masters,
Here i have some doubts can anyone clarify?.
Is it possible to grep the lines by specifying the line numbers.
I know the line number which i want to grep.
example:
grep 40th line filename
grep 50th line filename
Need ur comments. (4 Replies)
hi,
i have to grep for string in file but i want to find the group of this line so i must get lines before and select the group.
the file look like :
####name_groupe1
alphanumeric line
alphanumeric line
..
####name_groupe2
alphanumeric line
alphanumeric line
..
####name_groupe3... (4 Replies)
Hi
i am having a file of more than 60,000 lines.
need to grep a string and write the line of string and next line of the grepped string
any suggestions (7 Replies)
I know how to grep, copy and paste a string from a line. Now, what i want to do is to find a string and print a string from the line below it. To demonstrate:
Name 1: ABC Age: 3
Sex: Male
Name 2: DEF Age: 4
Sex: Male
Output:
3 Male
I know how to get "3". My biggest problem is to... (4 Replies)
Hi,
I simply try to get a string in a line but I do smth. wrong. Hopfefully you can help me ;)
tried smth like:
ggrep -Eo " /folder1/folder2/folder3/* end" get_info_file > temp.file
I played a bit around but could not specify the end string command...
So this is the... (9 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)
Hi,
I would like to extract a pattern from a line. The first two characters will always be the same in this pattern, but the proceeding numbers will not be, and the pattern will always be 6 characters long. I would like to get the entire pattern up to a certain symbol, in this case, a period.
... (3 Replies)
Hello guys,
I have problem with hpux shell script. I have one big text file that contains like
SOH
bla bla bla
bla bla bla
ETX SOH
bla bla bla
ETX
SOH
bla bla bla
ETX
What I need to do is save first SOH*BLA into file1.txt, save second SOH*BLA into file2.txt and so on.... (17 Replies)
Discussion started by: sembii
17 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)