07-23-2007
suppress echo while reading input in expect
Hi all,
I tried searching for similar threads. Couldn't get any for Expect scripting.
I am trying automate a task which requires login to a machine. The user
would be prompted for the password. Now, I want this input to be hidden
from being displayed on the screen.
Is there any way, we can suppress echo to the terminal? Similar to the way
we do 'stty -echo' in shell script?
rgds,
Sudhir.
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netrc(4) File Formats netrc(4)
NAME
netrc - file for ftp remote login data
DESCRIPTION
The .netrc file contains data for logging in to a remote host over the network for file transfers by ftp(1). This file resides in the
user's home directory on the machine initiating the file transfer. Its permissions should be set to disallow read access by group and oth-
ers (see chmod(1)).
The following tokens are recognized; they may be separated by SPACE, TAB, or NEWLINE characters:
machine name Identify a remote machine name. The auto-login process searches the .netrc file for a machine token that matches the remote
machine specified on the ftp command line or as an open command argument. Once a match is made, the subsequent .netrc
tokens are processed, stopping when the EOF is reached or another machine token is encountered.
default Same as machine name, except that default matches any name. There can be only one default token, and it must be after all
machine tokens. The default token is normally used as follows:
default login anonymous password user@site
Such an entry gives the user automatic anonymous ftp login to machines not specified in .netrc.
login name Identify a user on the remote machine. If this token is present, the auto-login process will initiate a login using the
specified name.
password string Supply a password. If this token is present, the auto-login process will supply the specified string if the remote server
requires a password as part of the login process. Note: if this token is present in the .netrc file, ftp will abort the
auto-login process if the .netrc is readable by anyone besides the user.
account string Supply an additional account password. If this token is present, the auto-login process supplies the specified string if
the remote server requires an additional account password. If the remote server does not require an additional account
password, the auto-login process will initiate an ACCT command.
macdef name Define a macro. This token functions the same as ftp macdef. A macro is defined with the specified name; its contents
begin with the next .netrc line and continue until a null line (consecutive NEWLINE characters) is encountered. If a macro
named init is defined, it is automatically executed as the last step in the auto-login process.
EXAMPLES
Example 1: A Sample .netrc File
A .netrc file containing the following line:
machine ray login demo password mypassword
allows an autologin to the machine ray using the login name demo with password mypassword.
FILES
~/.netrc
SEE ALSO
chmod(1), ftp(1), in.ftpd(1M)
SunOS 5.10 3 Jul 1990 netrc(4)