pty(1) BSD General Commands Manual pty(1)NAMEpty — redirects terminal I/O to pseudo-terminal
SYNOPSISptyDESCRIPTION
Pty is a tool to help debug console programs which take the terminal out
of canonical mode, by allowing the program being debugged and the debug‐
ger to run on separate terminal devices. This allows one to step through
program code in the debugger without messing up the terminal settings of
the program being debugged or having debugger output overwrite program
output.
To use pty, the programmer changes to the terminal device where he or she
wishes to interact with the program to be debugged, and at the shell
prompt, runs pty with no arguments. Pty will print out the filename of
the slave side of the pseudo-terminal it has opened. Inside the debug‐
ger, running in another terminal device, one then redirects the program
to be debugged's IO to the slave (tty command of gdb). Thereafter, when
running the program under the debugger, its I/O will occur on the device
on which pty is running.
When you are finished using pty, you must manually kill it. When pty
starts it also prints out its pid.
AUTHORS
James Bailie ⟨jimmy@mammothcheese.ca⟩
http://www.mammothcheese.ca
Oct 06, 2007
