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)
hello all,
Being root, I would like to log user activity (also multiple root activity), i don't really like
history file based logging, lets assume that users have access to their .profile.
I would like to write a monitoring daemon in C that would capture /dev/ttys,
so I need to do a... (0 Replies)
I'm hoping someone can help me out here.
I'm having a problem on my Red Hat Enterprise 5 Server where my tty devices "tty" are being set to read only permissions.
I need them to be set to 777 in order to write to the serial printers through a custome application.
I have gone through many... (2 Replies)
Hi all,
we are just confused about a strange problem on one server in production (XServer, running OSXS 10.5.6). It works normal for month. Since two day everthing seems to be fine also with one exception.
When we connect trough ssh we won't get a tty session. For testing purposes, we enabled... (2 Replies)
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)
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)
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)
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
LEARN ABOUT FREEBSD
watch
WATCH(8) BSD System Manager's Manual WATCH(8)NAME
watch -- snoop on another tty line
SYNOPSIS
watch [-cinotW] [-f snpdev] [tty]
DESCRIPTION
The watch utility allows the user to examine all data coming through a specified tty using the snp(4) device. If the snp(4) device is not
available, watch will attempt to load the module (snp). The watch utility writes to standard output.
The options are as follows:
-c Reconnect on close. If the tty observed by watch is closed, automatically reattach to the same tty. If this option is not speci-
fied, watch will request a new tty if running in interactive mode or exit if running without a controlling tty.
-f snpdev
If this option is specified, watch will use snpdev as the snp(4) device. Without this option, watch will attempt to find the next
available snp(4) device.
-i Force interactive mode. Interactive mode is a default if watch is started from a tty. If output is redirected to a file, interac-
tive mode can still be requested by specifying this option.
-n Disable the ability to switch the watched tty interactively. This disables both change requests made with <control-X> as well as
automatic prompting when the current tty is closed or overflows. In all cases where a prompt would be displayed, watch will exit.
The reconnect flags are unaffected by this option. When this flag is used, <control-X> is passed through to the terminal.
-o Reconnect on overflow. The behavior of watch if the observed tty overflows is similar to the behavior if the observed tty is closed.
For more info see snp(4).
-t Print the date and time when observation of a given tty is started.
-W Allow write access to observed tty.
tty Tty may be specified as a tty-style device, such as a pseudo tty device, a virtual console, or a serial line, etc. Names may be pre-
ceded by /dev/.
OPERATION
While running in interactive mode, all user input is discarded except for:
<control-G>
Exit watch.
<control-W>
Clear screen.
<control-X>
Change attached tty, unless this feature is disabled, in which case control-X is passed to the terminal as with other control charac-
ters.
SEE ALSO pty(4), sio(4), snp(4), kldload(8)HISTORY
The watch utility first appeared in FreeBSD 2.1.
AUTHORS
Ugen J.S. Antsilevich <ugen@NetVision.net.il>
BUGS
No terminal emulation is performed. All user output is reproduced as-is.
BSD November 24, 2001 BSD
08-07-2010
