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Re: Subshells and parameters



On 2006-05-12 08:09:26 -0400, Lloyd Zusman wrote:
> So how can we get the process ID of any given subshell?

dixsept:~> cat > getpid.c
#include <stdio.h>
#include <unistd.h>
int main(void)
{
  printf("%d\n", (int) getppid());
  return 0;
}
dixsept:~> gcc -Wall -O2 getpid.c -o getpid
dixsept:~> echo $$; ./getpid
13372
13372
dixsept:~> (echo $$; ./getpid)
13372
14153
dixsept:~> (stat +link /proc/self; ./getpid)
14168
14168

Note: as Peter said, /proc is specific to Linux.

-- 
Vincent Lefèvre <vincent@xxxxxxxxxx> - Web: <http://www.vinc17.org/>
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Work: CR INRIA - computer arithmetic / SPACES project at LORIA



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