How to put FTP process as a background process/job in perl? Post: 302539809

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Top Forums Shell Programming and Scripting How to put FTP process as a background process/job in perl? Post 302539809 by vanitham on Monday 18th of July 2011 11:54:53 PM

07-19-2011

Registered User

Quote:

Originally Posted by pludi

Do you want to do any additional processing while the file is being transferred? If not, I don't see why the transfer process should be separated from the main process.

Otherwise, here's a small script on how to use fork:

Code:

#!/usr/bin/perl -w

use strict;
use warnings;

print "Parent script\n";

my $pid = fork();
if ( $pid == 0 ) {
    print "Child script started\n";
    sleep 5;
    print "Child script ending\n";
    exit int( rand(255) );
}
elsif ( $pid > 0 ) {
    print "Parent script, child has PID $pid\n";
    waitpid( $pid, 0 );
    print "Parent script, child exited with status " . ( $? / 256 ) . "\n";
    exit 0;
}
else {
    print "Error when forking: $!\n";
}

Hi,
Thanks for your reply. My sense is that FTP should not be depended on the main process it should be as an background process. Yes there are chances of additional processing while the file is being transferred

Suppose my main program is main.pl and ftp is callftp.pl how do i utilize the above program and put callftp.pl as an background program?

Regards
Vanitha

vanitham

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LEARN ABOUT SUNOS

ftp

ftp(4)								   File Formats 							    ftp(4)

NAME

       ftp - FTP client configuration file

SYNOPSIS

       /etc/default/ftp

DESCRIPTION

       Use  the ftp file to configure the behavior of the FTP client. Lines that begin with a hash symbol ("# ") are treated as comment  lines and
       are ignored.

   Behavior Directives
       The ftp file supports the following behavior directives:

       FTP_LS_SENDS_NLST=yes | no

	   The ls command of the ftp client sends an NLST to the FTP Server by default. Several non-Solaris clients send LIST instead. In order to
	   make the Solaris ftp client send LIST when the ls command is issued, set FTP_LS_SENDS_NLST to no. The value of FTP_LS_SENDS_NLST is yes
	   by default.

       If the user sets a value for FTP_LS_SENDS_NLST in the user's environment, this value will override any FTP_LS_SENDS_NLST directive that	is
       specified in /etc/default/ftp.

ATTRIBUTES

       See attributes(5)  for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWbipr			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       ftp(1), attributes(5)

SunOS 5.10							    22 Oct 2002 							    ftp(4)