Re: Display feedback while typing password in terminal.

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Author: JD Austin
Date:  
To: Main PLUG discussion list
Subject: Re: Display feedback while typing password in terminal.
Here is one way:
#!/bin/bash -p
old_settings=$(stty -g)trap 'stty $old_settings' EXIT HUP
echo -n "Enter Password: "
stty raw -echoichr=.value=oifs="$IFS"IFS=while [[ $ichr != "" ]]; do
    read -n1 ichr
    [[ -n $ichr ]] && echo -n '.'
    value="$value$ichr"doneIFS="$oifs"
stty -raw echoecho
echo $value | *passwd --stdin*



-- JD Austin
Voice: 480.269.4335 (480 2MY Geek)




On Mon, Sep 9, 2013 at 7:41 AM, Brian Cluff <> wrote:

> You could always wrap your passwd command with a shell script that just
> tells them that the password prompt won't echo anything and then
> immediately runs the real password program.
>
> Brian Cluff
>
>
> On 09/09/2013 06:49 AM, Shawn Badger wrote:
>
>> Thanks Brian, i was hoping it wouldn't be that deep of a change, I
>> think my users will just have to get used to it since I'm not thinking
>> it a big enough problem to change the app. It is always good to be able
>> to have the choice to though :)
>>
>>
>>
>>
>>
>> On Fri, Sep 6, 2013 at 8:51 AM, Brian Cluff <
>> <mailto:brian@snaptek.com>> wrote:
>>
>>     I was just reading though the source for passwd and it looks like
>>     there isn't a way to do it without rewriting parts of passwd to not
>>     use the getpass function, or rewriting getpass itself if you want
>>     everything to output the stars.

>>
>>              The  getpass()  function  opens  /dev/tty (the controlling
>>              terminal of the process), outputs the string prompt, turns
>> off
>>              echoing, reads one line (the "password"), restores the
>> terminal
>>              state and closes /dev/tty again.

>>
>>     Brian Cluff

>>
>>
>>     On 09/06/2013 08:13 AM, Shawn Badger wrote:

>>
>>         Thanks Larry!!
>>         I have found several articles on how to do form within sudo, but
>>         nothing
>>         on how to get passwd or bash to do it so far.

>>
>>
>>         On Thu, Sep 5, 2013 at 4:29 PM, Dazed_75 <
>>         <mailto:lthielster@gmail.com>
>>         <mailto:lthielster@gmail.com <mailto:lthielster@gmail.com>>**>
>> wrote:

>>
>>              Oops!  I misread your question.  That was for the part you
>>         already know.

>>
>>
>>              On Thu, Sep 5, 2013 at 4:27 PM, Dazed_75
>>         < <mailto:lthielster@gmail.com>
>>              <mailto:lthielster@gmail.com
>>         <mailto:lthielster@gmail.com>>**> wrote:

>>
>>         http://www.maketecheasier.com/**__quick-tips/show-password-__**
>> asterisks-in-terminal<http://www.maketecheasier.com/__quick-tips/show-password-__asterisks-in-terminal>

>>
>>         <http://www.maketecheasier.**com/quick-tips/show-password-**
>> asterisks-in-terminal<http://www.maketecheasier.com/quick-tips/show-password-asterisks-in-terminal>

>> >
>>
>>                  worked for me :)

>>
>>
>>                  On Thu, Sep 5, 2013 at 12:55 PM, Shawn Badger
>>         < <mailto:shawn@badger.pro>
>>                  <mailto:shawn@badger.pro <mailto:shawn@badger.pro>>>
>> wrote:

>>
>>                      I have how to display password feed back while
>>         using sudo,
>>                      but Google has failed me on how to display feedback
>>         while
>>                      running passwd in a terminal session.  Does anyone
>>         know if
>>                      the pwfeedback environment setting works outside of
>>         sudoers
>>                      file or an equivalent setting for the passwd command?

>>
>>
>>
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>> >
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>> >>
>>
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>> >
>>
>>
>>
>>
>>                  --
>>                  Dazed_75 a.k.a. Larry

>>
>>                  Please protect my address like I protect yours. When
>>         sending
>>                  messages to multiple recipients, use the BCC: (Blind
>> carbon
>>                  copy). Remove addresses from a forwarded message body
>>         before
>>                  clicking Send.

>>
>>
>>
>>
>>              --
>>              Dazed_75 a.k.a. Larry

>>
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>>         copy).
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>>
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>>
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>> >>
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