Hi all,
I have a file with lines written somewhat like this.
aaaa
ccc
aa
linux
browse = no
xssxw
cdcedc
dcsdcd
csdw
police
dwed
dwd
browse = no
cdecec (2 Replies)
How do I replace only if the keyword is at the begining of a line?
Code:
--
a = “This is a print statement”
print a
--
What if I want to replace print by #print only in the second line i.e only if the line starts with that keyword.
Please help me out. I'm new to SED.
-----Post... (5 Replies)
hi dudes;
this is my file.txt:20101228-180436_Down
a 1
b 2
...
20101228-190436_Rollback
a 1 40
e 3 20
...
20101228-180436_Down
c 2
f 2
c 1
...
and i have a down.txt:a 1 aa 2 30 bb 1 40
b 2 ab 3 10
c 3 cd 4 50 ac 2 20
c 3 ad 1 0 (2 Replies)
I have a file that has the words I want to find in other files (but lets say I just want to find my words in a single file). Those words are IDs, so if my word is ZZZ4, outputs like aaZZZ4, ZZZ4bb, aaZZZ4bb, ZZ4, ZZZ, ZyZ4, ZZZ4.8 (or anything like that) WON'T BE USEFUL.
I need the whole word... (6 Replies)
Hi friends,
i just want to know the command though which i can get the next word which comes just after a particluar keyword. For example:
suppose text.out is file which contains a pl/sql procedure . i want to find out the word which falls just after the "table1" keyword.
Thank... (7 Replies)
How to catch a two word keyword which may contain a new line(may include spaces or tab) in it.
for example there is a file a.txt.
$more a.txt
create view
as
(select from
.........
..........
( select
....
(
select
......
..
select only no (((
number
( select
end (12 Replies)
Hi
I want to implement something like this:
if( keyword1 exists)
then
check if(keyword2 exists in the same line)
then replace keyword 2 with New_Keyword
else
Add New_Keyword at the end of line
end if
eg:
Check for Keyword JUNGLE and add/replace... (7 Replies)
Hi Everyone,
Need help in extracting the hostname from the below output.
Expected output:
DS-TESTB-GDS-1.TEST.ABC.COM
DS-TESTB-GDS-2.TEST.ABC.COM
....
...
/tmp $ cat -n /tmp/patchreport
1 /usr/bin/perl /admin/bin/patch/applyPatches.pl --apply_patches... (4 Replies)
I have a file where every line includes four expressions with a caret in the middle (plus some other "words" or fields, always separated by spaces). I would like to extract from this file, all those lines such that each of the four expressions containing a caret appears in at least four different... (9 Replies)
I have a csv file as shown below,
xop_thy 80 avr_njk 50 str_nyu 60
avr_irt 70 str_nhj 60 avr_ngt 50
str_tgt 80 xop_nmg 50 xop_nth 40
cyv_gty 40 cop_thl 40 vir_tyk 80
vir_plo 20 vir_thk 40 ijk_yuc 70
cop_thy 70 ijk_yuc 80 irt_hgt 80
I need to align/sort the csv file based... (7 Replies)
Discussion started by: dineshkumarsrk
7 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)