I have lines in a file that look like this:
machine: machinea
machine: machineb
machine: randomwhatevermachine
I want to replace the machine lines with:
machine: machinec
I tried
perl -pi -e "s/#machine:\?*/machine: machinec/" filename
But this ended up doing this:
... (2 Replies)
I've been working on this all night and finally have to ask for help... and not just from my coffee pot.
I need to replace a line of text only when it is proceeded by a line containing only the letter "H"
Input:
H -2.204711 -0.922090 -0.024814
P
6-311+G(d)
****
C
6-311+G(d)... (7 Replies)
Hi friends,
I want to substitute "a ='....'," with ":" in everywhere in a string using Perl.
Details:
----------
my $str= " c1='fgfasfgasggfgff.,akhkhahha', c2='bbbn', c3='hg5 sh' ";
Required o/p: $str= " c1:c2:c3 "
I tried as below:
$str=~ s/=\'.*\',/:/g ;
print "str=... (14 Replies)
Hi,
I have a template file and want to replace 3 parameters to the values that I want. these values are in a parameter file.
Any idea how to do this in perl?
the parameter file looks like:
host_name = jupiter
PORT = 1562
IPADDRESS = 10.1.34.10
the template file has lots of entry.... (1 Reply)
Hi All,
I need the perl version of the below sed command:
sed 's/abc.*/&.txt/g' <filename>
Because I'm trying to do some replacement recursively using perl and the above replacement is replacing the abc* with "&.txt" exactly.
Thanks,
Arun (9 Replies)
I have a large text csv file that I'm working with. It will look something like this:
D,",E",C
O,"F,",I
O,gh,R
The second column always has a two digit random code (can be numbers, letters or any characters). When one of the characters happens to be a comma, the string is quoted. I want to... (5 Replies)
Hi,
I'm new to Perl, and I want to change a few columns in a file in order to insert them into a database.
The input file looks like this:
00001,"01/1234567" ,"Tst2"
00002,"01/4545646" ,"Tst123456"
00003,"01/8979898" ,""
The output should look like this:
01-1234567,00001... (2 Replies)
hi Geeks,
my input file contains data like =>
53 - Deewana Kar Raha Hai.mp3
54 - Hale Dil.mp3
55 - Ishq Sufiyana.mp3
56 - Abhi Kuch Dino Se.mp3
57 - Pee Loon Hoto Ki Sargam.mp3
I had used sed command to remove the prefix from the file name like
sed 's/^\
it gives me the perfect... (4 Replies)
Hi,
With the following Perl syntax, how to print the $_ value after the substitution?
s/(\s*|\n)//g foreach (<>);
If I use the below code, it produces some numeric output print s/(\s*|\n)//g foreach (<>); (2 Replies)
OSX
I have been grinding my teeth on a portion of code. I am building a bash script that edits a html email template. In the template, I have place holders for SED (or whatever program is appropriate) to use as anchors for find and replace, with user defined corresponding html code. The HTML code... (3 Replies)
Discussion started by: sudo
3 Replies
LEARN ABOUT DEBIAN
io::async::signal
IO::Async::Signal(3pm) User Contributed Perl Documentation IO::Async::Signal(3pm)NAME
"IO::Async::Signal" - event callback on receipt of a POSIX signal
SYNOPSIS
use IO::Async::Signal;
use IO::Async::Loop;
my $loop = IO::Async::Loop->new;
my $signal = IO::Async::Signal->new(
name => "HUP",
on_receipt => sub {
print "I caught SIGHUP
";
},
);
$loop->add( $signal );
$loop->run;
DESCRIPTION
This subclass of IO::Async::Notifier invokes its callback when a particular POSIX signal is received.
Multiple objects can be added to a "Loop" that all watch for the same signal. The callback functions will all be invoked, in no particular
order.
EVENTS
The following events are invoked, either using subclass methods or CODE references in parameters:
on_receipt
Invoked when the signal is received.
PARAMETERS
The following named parameters may be passed to "new" or "configure":
name => STRING
The name of the signal to watch. This should be a bare name like "TERM". Can only be given at construction time.
on_receipt => CODE
CODE reference for the "on_receipt" event.
Once constructed, the "Signal" will need to be added to the "Loop" before it will work.
AUTHOR
Paul Evans <leonerd@leonerd.org.uk>
perl v5.14.2 2012-10-24 IO::Async::Signal(3pm)