Hard to believe I haven't been bothered by this before: if one runs ps in cygwin Windows processes are not displayed unless the W option is used.
$ ps -ef | grep post*
-- nothing
$ ps -efW | grep post*
0 3220 0 ? Jun 17 D:\PostgreSQL\9.1\bin\postgres.exe
0 5684 0 ? Jun 17 D:\PostgreSQL\9.1\bin\postgres.exe
0 3808 0 ? Jun 17 D:\PostgreSQL\9.1\bin\postgres.exe
0 3072 0 ? Jun 17 D:\PostgreSQL\9.1\bin\postgres.exe
0 3620 0 ? Jun 17 D:\PostgreSQL\9.1\bin\postgres.exe
0 412 0 ? Jun 17 D:\PostgreSQL\9.1\bin\postgres.exe
Unfortunately I've not found a cygwin way to kill the Windows processes. I'm stuck with the Windows way:
$ kill -9 1600
-bash: kill: (1600) - No such process
$ taskkill /F /PID 1600
SUCCESS: The process with PID 1600 has been terminated.
