ewaters/altsql-shell — pull request #37 by belden (2012-07-11 22:02:25+00:00)
Title: ^Z works for backgrounding altsql

On ^Z, issue "kill 20, $$". This tells the process to move itself into the background.

20 is the POSIX-compliant value for SIGTSTP, which is the message for a process to move itself into the background (or perhaps for the kernel to do so). This change might make the application behave strangely on non-POSIX systems.

See http://en.wikipedia.org/wiki/Unix_signal#List_of_signals