[MLton-user] Unix.execute question
Fri, 14 Jan 2005 10:59:58 -0500 (EST)
> Isn't Unix.execute supposed to exec an application in the environment
> of the calling process ?
> I'm working on an application that launches another one for a subtask,
> using Unix.execute. The executable of the subtask is reachable from
> my Path, but my application only works if that executable is put in
> the working directory (otherwise it fails with OS.SysErr saying "No
> such file or directory").
> Am I misunderstanding the man page for Unix.execute ?
Yes. Unix.execute requires that the cmd argument name the executable
exactly. Although the execute-ed process inherits the environment of the
calling process, there is no requirement that Unix.execute consult that
environment when looking for the command. To put it another way,
Unix.execute (cmd, args) ==
Posix.Process.exec (cmd, args)
Unix.execute (cmd, args) <>
Posix.Process.execp (cmd, args).