Clearly /dev/input/event3 is not a text file and therefore not suitable for reading with a Shell read. In fact there is little of interest to Shell programmers under /dev. (Yep I know about /dev/null etc.).
Be very very careful in /dev - it is remarkably easy to destroy your system.
What is the output from:
(Googling the device suggests that it might be a keyboard device on some versions of Linux - a fact of little use to Shell programmers).
What Operating System and version are you running?
What Shell are you running?
What are you trying to do? Can you explain the Project in words just in case there is a stock solution?
There will be kernel driver software between Shell and a keyboard.
If you have "bash" there is a Shell raw "read" with a timeout but even then it will not register keys like ctrl and shift as characters. Reading characters in a tight loop without timeout is CPU-intensive.
A common way to modify the behaviour of a cleverly designed running Shell script is to create a flag file or to use a Shell "trap" to react to a keyboard control code or signal.
What is an "initramfs script", what does it do, and why would you want to interrupt it?
What runstate are you in while this script is running?
Now, here's my problem. I'm trying to unlock my encrypted system disk in Ubuntu 10.10. Sometimes I want to enter the passphrase via SSH and sometimes locally. Here's the piece of code that needs to be modified.
I need the script to run the first case if I want to enter the passphrase via the local keyboard, and run the second case if I want to enter the passphrase via SSH.
So, how do I notify the computer that I am at the keyboard? By pressing a key, perhaps.
Hi
I have tried to disable the CTRL-Z key inside a shell(sh) script using the command trap "`echo "Ctrl-Z key disabled"`" 20But I am not able to exit from the script after pressing CTRL-Z key.
How to proceed this? Need reply soon (11 Replies)
Hi all,
My query is... in the runtime, you are getting any input string. Unfortunately, you have pressed some ctrl keys or esc keys or arrow keys while typing input string. You can get the input value like that...
input string as
welcome^
So ,I want to remove those unwanted keys... (4 Replies)
Hello,
We are having a problem with running dtterm off a RHEL server. Logging into an HP-UX server from a RHEL 5.1 desktop, setting DISPLAY and running dtterm, the caps lock does not work. We have been playing with xmodmap & stty but to no avail.
Any help appreciated.
mgb (1 Reply)
Hello,
We are having a problem with running dtterm off a RHEL server. Logging into an HP-UX server from a RHEL 5.1 desktop, setting DISPLAY and running dtterm, the caps lock does not work. We have been playing with xmodmap & stty but to no avail.
Any help appreciated.
mgb (7 Replies)
My problem is that i have to connect Linux server. I can connect it with SSH but because of the software of the Linux server, i need to press enter and after ctrl+D. Therefore, I need to write a script that should press enter and ctrl+D. How can i write it in KSH shell script. HELP ME! (7 Replies)
Hello,
Not sure if this is the right place to post it but..
I have a requirement to set Caps lock and/or Num lock on and off via a Cron job.
Now I have working scripts that do the job, but as soon as X starts up the jobs no longer run (well they appear to, but Caps lock and Num lock do not... (0 Replies)
hi all
this s quite a foolish problem. I seem to hav pressed some keys s.t in unix, my letters are comin in caps and with caps lock on, i am getting lowercase letters. :o
Pls help.
Also is there any reference or manual where i can check in case such problems arrise?
thanx in advance
curiosity (4 Replies)
I want to detect key pressed in my .cgi web page, but it does not work even I found the code in other web site.
My code is :
#!/bin/sh
#=================================================
# PATH defination
# ================================================... (2 Replies)
With use of sed/awk, how can I print all possible combinations of a word with caps/non-caps.
Eg
Applying operation on "cap" should generate output as follows.
cap
CAP
Cap
cAp
caP
CAp
cAP
CaP (12 Replies)
Discussion started by: anil510
12 Replies
LEARN ABOUT REDHAT
plymouthd
PLYMOUTHD(8) System Administration PLYMOUTHD(8)NAME
plymouthd - The plymouth daemon
SYNOPSIS
plymouthd [OPTION...]
DESCRIPTION
The plymouthd daemon is usually run out of the initrd. It does the heavy lifting of the plymouth system, logging the session and showing
the splash screen.
The plymouth is used to send commands to plymouthd that control its behaviour.
OPTIONS
The following options are understood:
--help
Show summary of options.
--attach-to-session
Redirect console messages from screen to log.
--no-daemon
Do not daemonize.
--debug
Output debugging information.
--debug-file=STRING
File to write debugging information to.
--mode=MODE
Set mode to either boot or shutdown.
--pid-file=STRING
Write the PID of the daemon to a file.
--kernel-command-line=STRING
Fake kernel commandline to use.
--tty=STRING
TTY to ues instead of default.
SEE ALSO grub(8), plymouth(8), plymouth(1), http://www.freedesktop.org/wiki/Software/Plymouth
plymouthPLYMOUTHD(8)