NAME
ok - a y/n interrogator
SYNOPSIS
ok [message]
DESCRIPTION
When used without arguments ok prints the message `ok (y/n): ` to
stdout and waits for the user to enter a character followed by a line feed.
If the character is `y' then the program exits with a code of 0; any other
string (including enter alone) will generate an exit code of
1.
If a message is specified, it is printed to stdout (without carriage return)
and the program awaits input as
above.