10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hello All;
I have an input file 'abc.txt' with below text:
512345977,213458,100021
512345978,213454,100031
512345979,213452,100051
512345980,213455,100061
512345981,213456,100071
512345982,213456,100091
512345983,213457,100041
512345984,213451,100011
I need to paste the first field... (10 Replies)
Discussion started by: mystition
10 Replies
2. UNIX for Dummies Questions & Answers
awk '/^>/{id=$0;next}length>=7 { print id, "\n"$0}' Test.txt
Can I use substr to achieve the same task?
Thanks! (8 Replies)
Discussion started by: Xterra
8 Replies
3. Shell Programming and Scripting
I have a command like this:
listdb ID923 -l |gawk '{if (substr($0,37,1)==1 && NR == 3)print "YES" else if (substr ($0,37,1)==0 && NR == 3) print "NO"}'
This syntax doesn't work. But I was able to get this to work:
listdb ID923 -l |gawk '{if (substr($0,37,1)==1 && NR == 3)print "YES"}'
... (4 Replies)
Discussion started by: newbie2010
4 Replies
4. Shell Programming and Scripting
HI I am using awk and substr function to list out the directory names in the present working directory .
I am using below code
ls -l | awk '{ if ((substr($1,1,1)) -eq d) {print $9 }}'
But the problem is i am getting all the files and directories listed where as the requirement i wrote... (7 Replies)
Discussion started by: prabhu_kumar
7 Replies
5. Shell Programming and Scripting
I have the following to find lines matching "COMPLETE" and extract parts of it using substr.
sed -n "/COMPLETE/p" 1.txt | awk 'BEGIN { FS = "\" } {printf"%s %s:%s \n", substr($3,17,3),substr($6,4,1), substr($7,4,1)}' | sort | uniq > temp.txt
Worked fine until the numbers in 2nd & 3rd substr... (5 Replies)
Discussion started by: zpn
5 Replies
6. UNIX for Dummies Questions & Answers
can anybody explain this code?
thanks in advance..:) (6 Replies)
Discussion started by: janani_kalyan
6 Replies
7. Shell Programming and Scripting
Hi,
I have a long string like,
aabab|bcbcbcbbc|defgh|paswd123 dedededede|efef|ghijklmn|paswd234 ghghghghgh|ijijii|klllkkk|paswd345 lmlmlmmm|nononononn|opopopopp|paswd456
This string is devided into one space between substrings. This substrings are,
aabab|bcbcbcbbc|defgh|paswd123... (6 Replies)
Discussion started by: syamkp
6 Replies
8. UNIX for Dummies Questions & Answers
Hi,
My input file is
41;2;xxxx;yyyyy....
41;2;xxxx;yyyyy....
41;2;xxxx;yyyyy....
..
..
I need to change the second field value from 2 to 1. i.e.,
41;1;xxxx;yyyyy....
41;1;xxxx;yyyyy....
41;1;xxxx;yyyyy....
..
..
Thanks in advance. (9 Replies)
Discussion started by: deepakwins
9 Replies
9. Shell Programming and Scripting
What is the more efficient way to do this (awk only and default FS) ?
$ echo "jefe@alm"|awk '{pos = index($0, "@");printf ("USER: %s\n",substr ($0,1,pos-1))}'
USER: jefe
Thx in advance (2 Replies)
Discussion started by: Klashxx
2 Replies
10. Shell Programming and Scripting
Sorry if this has been posted before, I searched but not sure what I really want to do.
I have a file with records that show who has logged into my application:
2003-03-14:I:root: Log_mesg: registered servername:userid. (more after this)
I want to pull out the userid, date and time into... (2 Replies)
Discussion started by: MizzGail
2 Replies
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)