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Full Discussion: Read function is going in infinite in another script having while loop
Top Forums Shell Programming and Scripting Read function is going in infinite in another script having while loop Post 302998794 by MadeInGermany on Wednesday 7th of June 2017 12:06:26 PM
Old 06-07-2017
I guess you want one to read from the terminal and the other from the file.
The redirection of the outer while loop will make the inner loop also read from the file.
You can use another file descriptor to distinguish between the two input streams.
Code:
_prompt () {
while true
do
read -p"$1" var
[[ $var == 'yes' ]] && break
done
}
 
while read WfName <&3 
do
#some stuff
                _prompt "Please check if parameter file is updated ? "
#some stuff
done 3<"$dir"/ListOfWf

When the loop starts it will open the file and associate with file descriptor 3 (not 1 as a simple < does).
And you tell the read to read from that descriptor.
 

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LEARN ABOUT DEBIAN

pirl

PIRL(1p)						User Contributed Perl Documentation						  PIRL(1p)

NAME

       pirl - A read-eval-print loop in Perl (see Shell::Perl)

SYNOPSIS

	   pirl
	   pirl --noornaments

	   pirl --version
	   pirl -v

EXAMPLE SESSION

	   $ pirl
	   Welcome to the Perl shell. Type ':help' for more information

	   pirl @> 1+1
	   2

	   pirl @> use YAML qw(Load Dump);
	   ()

	   pirl @> $data = Load("--- { a: 1, b: [ 1, 2, 3] }
");
	   { a => 1, b => [1, 2, 3] }

	   pirl @> $var = 'a 1 2 3'; $var =~ /(w+) (d+) (d+)/
	   ("a", 1, 2)

	   pirl @> :q

DESCRIPTION

       This script is the command-line interface to "Shell::Perl" which does it all.

       By now, read the fine details at "Shell::Perl" documentation.

OPTIONS

	   --ornaments - turn on terminal ornaments (default)
	   --noornaments - turn off terminal organments

	   --version, -v - prints version info and exits with 0

SEE ALSO

       Shell::Perl

BUGS

       Please report bugs via CPAN RT <http://rt.cpan.org/NoAuth/Bugs.html?Dist=Shell-Perl>.

AUTHOR

       Adriano R. Ferreira, <ferreira@cpan.org>

       Caio Marcelo, <cmarcelo@cpan.org>

COPYRIGHT AND LICENSE

       Copyright (C) 2007aXX2011 by Adriano R. Ferreira

       This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.10.1							    2011-03-10								  PIRL(1p)
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