10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
In bash, you can do something like this:
#!/bin/bash
echo -n "What is your name? " > /dev/tty
read thename < /dev/tty
How can I do the same in python?
I have a python script that has the following content:
#!/usr/bin/python2.7
import getpass
import sys
import telnetlib
import... (2 Replies)
Discussion started by: SkySmart
2 Replies
2. Shell Programming and Scripting
Suppose another person wrote the following one-line shell script:
echo $RANDOM > /dev/tty
QUESTION #1: How can the random number, which is output to the terminal by this script, be captured in a variable?
QUESTION #2: How can this be done in a cron job?
Specific code, whether in ksh or... (1 Reply)
Discussion started by: Paul R
1 Replies
3. UNIX for Dummies Questions & Answers
hi,
From the below script:
##########################################pwd_auth.sh########################################################################################
#Author: Pandeeswaran Bhoopathy
#Written on:26th Jan 2012 2:00PM
#This script describes the feature of stty and illustrates... (3 Replies)
Discussion started by: pandeesh
3 Replies
4. UNIX for Dummies Questions & Answers
what can I use to find the last modified time of a /dev/tty ? (4 Replies)
Discussion started by: l flipboi l
4 Replies
5. Programming
Hello everybody:
I have a child process which reads a password from /dev/tty, as far as I know file descriptors for the child process can be seen by using lsof, so I want to connect to such device in order to send the password through a pipe, how could I do that? (2 Replies)
Discussion started by: edgarvm
2 Replies
6. UNIX for Dummies Questions & Answers
Hi,
I need to provide more than one character to "> /dev/tty" through terminal/keyboard input, I have this:
ok=false
while
do
echo " Enter r1 to reformat "
> /dev/tty
read choice
case $choice in
)
echo " bla bla bla "
;;
done
However, in this way,... (3 Replies)
Discussion started by: Gery
3 Replies
7. Programming
Since the existence of /dev/tty is not guaranteed, what happens when an attempt is made to open /dev/tty and there's no controlling terminal?
Will it fail, or open /dev/null instead? Or do something else?
So is checking for NULL in the code below a safe way of checking whether opening... (2 Replies)
Discussion started by: gencon
2 Replies
8. Solaris
Hi, Anyone can help
My solaris 8 system has the following
/dev/null , /dev/tty and /dev/console
All permission are lrwxrwxrwx
Can this be change to a non-world write ??
any impact ?? (12 Replies)
Discussion started by: civic2005
12 Replies
9. Cybersecurity
I suspect that someone is using a sniffer on my Ethernet connection,
OS X 10.3.9, DSL,
ok, I'm in terminal using the "ifconfig" command >
flags=8049<UP,LOOPBACK,RUNNING,MULTICAST>mtu 16384
right, it's not in "promiscuous mode", but i think it's Trojaned, can anyone point me in the... (1 Reply)
Discussion started by: su"do"er
1 Replies
10. UNIX for Dummies Questions & Answers
Hi,
When it proccesing the backup with cpio report this message: Cannot open "/dev/tty" and cancel de backup.
Cuando se procesa la tarea del backup reporta el error: Cannot open "/dev/tty" y cancela el backup y no termina correctamente, a que se devera esta advertencia.
Gracias.
Thacks.... (3 Replies)
Discussion started by: cmr88
3 Replies
PAM_SECURETTY(8) Linux-PAM Manual PAM_SECURETTY(8)
NAME
pam_securetty - Limit root login to special devices
SYNOPSIS
pam_securetty.so [debug]
DESCRIPTION
pam_securetty is a PAM module that allows root logins only if the user is logging in on a "secure" tty, as defined by the listing in
/etc/securetty. pam_securetty also checks to make sure that /etc/securetty is a plain file and not world writable. It will also allow root
logins on the tty specified with console= switch on the kernel command line and on ttys from the /sys/class/tty/console/active.
This module has no effect on non-root users and requires that the application fills in the PAM_TTY item correctly.
For canonical usage, should be listed as a required authentication method before any sufficient authentication methods.
OPTIONS
debug
Print debug information.
noconsole
Do not automatically allow root logins on the kernel console device, as specified on the kernel command line or by the sys file, if it
is not also specified in the /etc/securetty file.
MODULE TYPES PROVIDED
Only the auth module type is provided.
RETURN VALUES
PAM_SUCCESS
The user is allowed to continue authentication. Either the user is not root, or the root user is trying to log in on an acceptable
device.
PAM_AUTH_ERR
Authentication is rejected. Either root is attempting to log in via an unacceptable device, or the /etc/securetty file is world
writable or not a normal file.
PAM_INCOMPLETE
An application error occurred. pam_securetty was not able to get information it required from the application that called it.
PAM_SERVICE_ERR
An error occurred while the module was determining the user's name or tty, or the module could not open /etc/securetty.
PAM_USER_UNKNOWN
The module could not find the user name in the /etc/passwd file to verify whether the user had a UID of 0. Therefore, the results of
running this module are ignored.
EXAMPLES
auth required pam_securetty.so
auth required pam_unix.so
SEE ALSO
securetty(5), pam.conf(5), pam.d(5), pam(7)
AUTHOR
pam_securetty was written by Elliot Lee <sopwith@cuc.edu>.
Linux-PAM Manual 09/19/2013 PAM_SECURETTY(8)