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Full Discussion: Perl Progress BAR
Top Forums Shell Programming and Scripting Perl Progress BAR Post 302485816 by rwuerth on Thursday 6th of January 2011 09:08:19 AM
Old 01-06-2011
Before your first write to STDOUT and before selecting any other filehandle (if you do 'select' it somewhere) issue the following command:

Code:
 
$| = 1;

This sets autoflush to "true" for STDOUT and the output will not be buffered.

This code (stripped down version of yours, without the pdf processing) worked as I think you want yours to work.

Code:
#!/usr/bin/perl 
 
$| = 1;
 
print "STARTED:\n";
print STDOUT "Processing file: ";
 
open (FILE, ">bill_data.txt") || die "Can't open bill_data.txt";
for my $pagenum ( 1 .. 10 ) {
 sleep(5);   # for testing only.  replaces other processing and embedded for loop.
 print STDOUT "#";
 &print_it;
}
close (FILE);
print "\t [DONE] \n";
 
sub print_it {
 print FILE "SOME STUFF ... based on other process ...";
 print FILE "SOME STUFF ... based on other process ...";
 print FILE "SOME STUFF ... based on other process ...";
 print FILE "SOME STUFF ... based on other process ...";
 print FILE "SOME STUFF ... based on other process ...";
 print FILE "SOME STUFF ... based on other process ...";
}

Last edited by rwuerth; 01-06-2011 at 10:17 AM.. Reason: added my test code
 

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LEARN ABOUT DEBIAN

splashy_update

SPLASHY_UPDATE(1)					 Splashy POSIX boot splash system					 SPLASHY_UPDATE(1)

NAME

       Splashy - a user-mode, POSIX and LSB compliant, boot splashing system for UNIX.

SYNOPSIS

       splashy_update "<text>"

DESCRIPTION

       Splashy displays an image and a progress bar at boot time. splashy_update is used to send commands to the running Splashy daemon. See
       "COMMANDS" below to know which commands Splashy understands.

OPTIONS

       text    Sends text to Splashy socket.

COMMANDS

       chroot <string>
	       <string> is a valid path to which Splashy will be chroot'd.

       chvt <number>
	       Switch to vt <number>.

       clear   Clears the text box area.

       CLEAR   Same as "clrprint". For compatibility with usplash.

       exit    Exits Splashy server.

       getstring <string>
	       Makes splashy prompt for a string. The first argument will be the prompt displayed.

       getpass <string>
	       Same as getstring except that the characters typed will no be shown, like in a password box.

       progress <number>
	       Updates the progress bar to <number>%, where N is a number between 0 and 100.

       PROGRESS <number>
	       Same as "progress". For compatibility with usplash.

       print <string>
	       Print <string> in the text box.

       scroll <string>
	       Print <string> in the text box and scroll down.

       repaint Redraw the background image.

       TEXT <string>
	       Same as "print". For compatibility with usplash.

       SCROLL <string>
	       Same as "scroll".

       timeout <number>
	       Sets the amount of seconds splashy waits for new commands. If that time is exceeded, it exits.

       QUIT    Same as "exit". For compatibility with usplash.

RETURN CODES

       1  cannot open the socket
       2  cannot write to socket
       3  invalid args
       255 /etc/splashy does not exist

FILES

       /etc/splashy/config.xml
	       Main configuration. defines how splashy should be setup.

SEE ALSO

       splashy(1), splashy_config(1), splashy-config.xml(5), splashy-theme.xml(5)

AUTHORS

       Andrew Williams <mistik1@geeksinthehood.net>

       Luis Mondesi <lemsx1@gmail.com>

perl v5.12.1							    2010-07-05							 SPLASHY_UPDATE(1)
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