As I understand, graphical logins via a display manager like gdm executes an X/Wayland session directly after authenticating a user, instead of executing a login shell. I see that both X and Wayland sessions are started on a virtual terminal (tty2), and what the Xorg(1) says about the vt option is: 'This option applies only to platforms that have virtual terminal support, such as Linux, BSD, OpenSolaris, SVR3, and SVR4.' Is starting X/Wayland sessions with a controlling tty done merely to provide the ability to switch to other virtual terminals while running a graphical shell in one, or is it a constraint of X/Wayland? Is it possible to start an X/Wayland session without a controlling tty on Linux, and is this up to gdm, X/Wayland, or systemd? And what would be an example of a system that runs Xorg and doesn't have virtual terminals at all unlike the systems listed in Xorg(1)?
How can I control the screen output when trying to read a large file onto the screen x number of lines at a time. I'm trying to use this is a bourne shell script. I want to display 10 lines of a file, pause the screen so that a user can read the file, and then display the next 10 lines of the file,... (6 Replies)
I want to display a system warning message at the prompt of every live terminal on a sun solaris 8 machine using CDE.
I know this can be done on a console, but what about dtterm and xterm regular windows?
Does anyone know how this is done?
What about a single terminal?
Clear skies,... (2 Replies)
hi all,
am trying to 'grep' some text from a log file and use the 'cut' command to read from that line i just grep'ed to extract date/time and response times.
code sniplet i am using is :
grep -i 'text to grep' Out.log |
while read LINE;
do
... (11 Replies)
Any one know the below means :
ps: no controlling terminal
I had run a script in background :
nohup ./benchmark.sh &
and shutdown my windows system from where i connected through SSH
I am using bash:
The above script perfoms various tasks of Benchmarking Repositories
Today the... (3 Replies)
I have created a ksh shell script and used it as a login shell for a user.
</etc/passwd>
lramirev:x:111:200:Luis:/export/home/menush:/usr/local/menush/menush
My shell script is like this:
</usr/local/menush/menush>
#!/bin/ksh
#
if ]
then
. $HOME/.profile
fi
... (8 Replies)
Hello all,
I would like a message to be displayed on the shell when someone opens up the terminal - something like a welcome msg with date and time. I know how to do this by running the shell commands but dont know how to display it when a user opens up the terminal?
Thanks in advance (27 Replies)
I have a .NET application that remotely starts, stops, and gets status of Windows services and scheduled tasks. I would like to add the capability of starting, stopping, and getting status of remote AIX applications also. Based on some preliminary research, one option may be to use 3rd party .NET... (0 Replies)
Hi all...
Consider me a dummy here...
I do not want any code or for anyone to show me how to do it at this time, but here is the question:-
I have had this brainstorm to be able to control the AudioScope.sh program in the "Shell Scripting And Programming" forum...
Is it possible, by... (4 Replies)
Why does removing "rhgb quiet" from the kernel boot parameters control whether or not the commands I enter are displayed in single user mode ?
For instance, if I do not remove "rhgb quiet", when I am in single user mode, whatever command I type will not be displayed on the screen.
The... (0 Replies)
Discussion started by: Hijanoqu
0 Replies
LEARN ABOUT HPUX
getlogin_r
getlogin(3C)getlogin(3C)NAME
getlogin(), getlogin_r() - get name of user logged in on this terminal
SYNOPSIS DESCRIPTION
The function retrieves the name of the user currently logged in on a terminal associated with the calling process, as found in user-
accounting database maintained by utmpd(1M).
At least one of the standard input, standard output, or standard error must be a terminal. For the first of these found that is a termi-
nal, a user must have logged in on that terminal, and that terminal must be the controlling terminal of the session leader process of the
calling process's session.
The function can be used in conjunction with to locate the correct password file entry when the same user ID is shared by several login
names.
The recommended procedure to obtain the user name associated with the real user ID of the calling process is to call and if that fails, to
call
To get the user name associated with the effective user ID, call
performs the same operations as but returns the login name in the buffer to which buf points, whose size in bytes should be passed in
buflen. buf should have space for the name and the terminating null character. The maximum size of the login name can be obtained using
the API with as the argument.
APPLICATION USAGE
The return value from points to static data whose content is overwritten by each call.
RETURN VALUE
Upon successfully finding and validating the login name of the user logged in on the terminal, returns a pointer to the name. Otherwise,
it returns a null pointer, and sets to indicate the error.
Upon successfully finding, validating, and copying to the buffer the login name of the user logged in on the terminal, returns 0 upon suc-
cess and returns an error number upon failure.
ERRORS
and fail if any of the following is true:
[EACCES] Access permission to get the status of the terminal device file, was denied.
[EMFILE] Too many file descriptors are in use by this process.
[ENFILE] Too many file descriptors are in use on the system.
[ENOENT] The terminal device file cannot be found.
[ENOTTY] None of the standard input, standard output, or standard error is a terminal, or for the first of these that is a
terminal, no current login is registered on that terminal, or the session leader process of the calling process has
no controlling terminal.
[EPERM] One of the standard input, standard output, or standard error is a terminal, and a current login was found on that
terminal, but that terminal is not the same as the controlling terminal of the session of the calling process.
[ESRCH] The session leader process of the calling process is no longer running.
The error condition associated with [EPERM] prevents processes that have access to some other user's terminal from believing that they are
related to that other user's login session.
also fails if the following is true:
[ERANGE] The length of the name to be returned, including the terminating null byte, exceeds buflen.
WARNINGS
Users of should note now conforms with the POSIX.1c Threads standard. The old prototype of is supported for compatibility with existing
DCE applications only.
SEE ALSO utmpd(1M), getuid(2), sysconf(2), getgrent(3C), getpwent(3C), thread_safety(5).
STANDARDS CONFORMANCE getlogin(3C)