02-08-2005
How to hide password on Linux?
Hi falks,
I have the following ksh code:
echo "Enter VS Admin password:"
oldstty=`stty -g`
stty -echo intr '$-'
read password
stty $oldstty
echo
This code ask from a user to enter his password. The OS suppose to hide the entering of the password.
This code works fine On Sun Solaris and HP but fails on Linux.
On Linux,i get the following error message:
Enter VS Admin password:
stty: invalid integer argument `$-'
Try `stty --help' for more information.
Does anyone know how it works on Linux?
Thanks in advance,
Nir
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stty(2) System Calls Manual stty(2)
NAME
stty(), gtty() - control terminal device (Bell Version 6 compatibility)
SYNOPSIS
Remarks
These system calls are preserved for backward compatibility with Bell Version 6. They provide as close an approximation as possible to the
old Version 6 functions. All new code should use the and calls described in termio(7).
DESCRIPTION
For certain status settings and status inquiries about terminal devices, the functions and are equivalent to
and
respectively (see ioctl(2) and termio(7).
RETURN VALUE
and return the following values:
Successful completion.
Failure.
is set to indicate the error.
ERRORS
If or fails, is set to one of the following values:
[EBADF] is not a valid file descriptor.
[EFAULT] points to an invalid address.
WARNINGS
Obsolescent Interfaces
and are to be obsoleted at a future date.
SEE ALSO
stty(1), exec(2), ioctl(2), sttyV6(7), termio(7), tty(7).
TO BE OBSOLETED stty(2)