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Bash: capturing *Anything* which showed on screen

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Top Forums Shell Programming and Scripting Bash: capturing *Anything* which showed on screen
# 1  
Old 01-26-2011
Corona, methyl & citaylor Thank you very much.

@Crona:
Now I got what you mean and thanks for this valuable information.
So, I need some programming but between "expect" and "C Programming" I will choose the second one Smilie

@methyl:
You told that "CRT terminals in the 1980s were capable of repeating the screen output".
Could you please give me some more info about How they did that "repeating"?

@citaylor:
Yes, your answer was complicated but at last I figured it out Smilie
And many thanks for that "pseudoterminal (pty)" hint, I read the code before but I didn't get that ponit.

---------- Post updated at 11:06 AM ---------- Previous update was at 10:57 AM ----------

P.S: I'm going to build a simple remote system manager which will acts as a remote desktop but in text-mode. The difference is: Administrator from a single screen can connects, monitor and interact with N (>100) machines simultaneously.
So, It would not be a keylogger, password cracker or virus!!!
# 2  
Old 01-26-2011
Quote:
Originally Posted by siavash
@Crona:
Now I got what you mean and thanks for this valuable information.
So, I need some programming but between "expect" and "C Programming" I will choose the second one Smilie
There is a version of Expect for Perl too if you are more familar with that...

Quote:
Originally Posted by siavash
P.S: I'm going to build a simple remote system manager which will acts as a remote desktop but in text-mode. The difference is: Administrator from a single screen can connects, monitor and interact with N (>100) machines simultaneously.
Have you investigated the command "screen" at all ? Might give you some ideas...

Good luck
This User Gave Thanks to citaylor For This Post:
siavash
# 3  
Old 01-26-2011
Quote:
Originally Posted by citaylor
Have you investigated the command "screen" at all ? Might give you some ideas...
yes, a little. but I will check it again if you think that would be helpful... Smilie
# 4  
Old 01-26-2011
Quote:
@methyl:
You told that "CRT terminals in the 1980s were capable of repeating the screen output".
Could you please give me some more info about How they did that "repeating"?
One example of many was the DEC VT102 VDU Video Display Terminal Information ? VT100.net. It had a serial cable to the computer (or modem) and a serial output port for a printer. It was possible to pass control codes to the terminal to cause data to go to the printer or the screen or both. The feature is known as "passthru" and still exists in some modern terminal emulators. Most modern terminal emulators actually emulate the DEC vt220 which has a similar keyboard layout to a modern PC keyboard.

Attachmate Reflections unix terminal emulator includes a feature to log screen output to a file. The product also includes a keyboard scripting language where you can do "one button" full sessions.
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