PAL.C.T MINI SHELL
# ioctl example works on Sun
CBREAK = 0x00000002
ECHO = 0x00000008
TIOCGETP = 0x40067408
TIOCSETP = 0x80067409
def cbreak ()
set_cbreak(true)
end
def cooked ()
set_cbreak(false)
end
def set_cbreak (on)
tty = "\0" * 256
STDIN.ioctl(TIOCGETP, tty)
ttys = tty.unpack("C4 S")
if on
ttys[4] |= CBREAK
ttys[4] &= ~ECHO
else
ttys[4] &= ~CBREAK
ttys[4] |= ECHO
end
tty = ttys.pack("C4 S")
STDIN.ioctl(TIOCSETP, tty)
end
cbreak();
print("this is no-echo line: ");
readline().print
cooked();
print("this is echo line: ");
readline()
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