Hi All,

I am developing a program using the concept of pseudo master-slave terminal system to track the commands typed and the output.

I had been really successfull in implementing that.
The part that I find very difficult to analyze is the control characters that are produced as output.

like,
when i execute the command clear
in the prompt
i get a log of the command as clear
^[[v^[[H

and many control characters if I run cursor based programs

I would like to log only the characters without any control characters.
How to identify the pattern of control characters ?

Any help would be greatly appreciated ?

Thanks a lot for your help !!!

At first glance these appear to be vt100 terminal Escape control sequences.
You will need a hex dump of the file to confirm.

^[[H could be the sequence Esc [ H which moves the cursor to the home position.

http://astronomy.swin.edu.au/~pbourk...formats/vt100/

thanks for the reply,

yes they are control sequences,
(using netterm, putty to connect to the server SunOS)

now how do I identify these patterns so that i can remove all of such sequences in the log file ?

Patterns are so different,
If I consider cursor programs that are running.