Read in passwords with bash
25 March 2005
This has taken me some time to figure out because I couldn't find anything on Google. I think the problem was that I didn't know what to look for.
If you have a bash script that asks the user to enter their username and password you use the
read function in
sh. But when you read in the password you don't want it to show on the screen what you're writing. Someone could be leaning over your shoulder. Python has a similar standard library module called
getpass which works like this:
>>> from getpass import getpass >>> p = getpass("Password please: ") Password please: >>> print "Your password is", len(p), "characters long" Your password is 5 characters long
That's fine if you do this via Python; but I needed to do it in one of my bash scripts. Here's how to do it:
#!/bin/bash read -p "Username: " uname stty -echo read -p "Password: " passw; echo stty echo
Now, hopefully this will help other people who get stuck with the same problem.