Re: encryption

[David Christensen <dpchrist@holgerdanske.com>]

On 04/21/18 08:38, john doe wrote:
> Here's the code I used to let a script prompt for a password:
>
> read -s -p "Enter password: "
> [ $? -ne 0 ] && exit 1

Note that the above 'read' command will operate differently on Dash and 
on Bash:

2018-04-21 12:53:27 dpchrist@vstretch ~/sandbox/sh
$ cat read
read -s -p "Enter password: "
[ $? -ne 0 ] && exit 1
echo
echo $REPLY

2018-04-21 12:54:03 dpchrist@vstretch ~/sandbox/sh
$ dash read
read: 1: read: Illegal option -s

2018-04-21 12:54:06 dpchrist@vstretch ~/sandbox/sh
$ bash read
Enter password:
secret


Shell scripts using lowest-common denominator Bourne shell syntax are 
the most portable.  When I start getting fancy with Bash, I switch to Perl.


David