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Full Discussion: silent Input in PERL
Top Forums Shell Programming and Scripting silent Input in PERL Post 302664727 by fpmurphy on Saturday 30th of June 2012 10:49:53 AM
Old 06-30-2012
Also Term::ReadKey:
Code:
#!/usr/bin/perl

use Term::ReadKey;

my $key = 0;
my $password = "";

print "\nEnter password: ";

# Loop until enter key is pressed 
ReadMode(4);
while(ord($key = ReadKey(0)) != 10)
{
    if(ord($key) == 127 || ord($key) == 8) {
        chop($password);
        print "\b \b";
    } elsif(ord($key) < 32) {
        # control characters
    } else {
        $password = $password.$key;
        print "*";
    }
}                                                                                                        
ReadMode(0);

print "\n\nYou entered: $password\n";

 

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LEARN ABOUT V7

suspend

suspend(1)                                                         User Commands                                                        suspend(1)

NAME

       suspend - shell built-in function to halt the current shell

SYNOPSIS

   sh
       suspend

   csh
       suspend

   ksh
       suspend

DESCRIPTION

   sh
       Stops the execution of the current shell (but not if it is the login shell).

   csh
       Stop the shell in its tracks, much as if it had been sent a stop signal with ^Z. This is most often used to stop shells started by su.

   ksh
       Stops the execution of the current shell (but not if it is the login shell).

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWcsu                      |
       +-----------------------------+-----------------------------+

SEE ALSO

       csh(1), kill(1), ksh(1), sh(1), su(1M), attributes(5)

SunOS 5.10                                                          15 Apr 1994                                                         suspend(1)
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