> #include <unistd.h>
> #include <stdio.h>
>
> main () {
> printf("stdin is %d\n",isatty(0));
> }
>
> Then running this from Fvwm gave 2 different results, with just
> plain Exec, you get "1". With Exec and the ampersand, you get
> "0".
In a shell which does not support job control (which presumably
includes any non-interactive shell), I suspect a background task's
stdin is redirected from /dev/null.
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