On Sun, Aug 14, 2011 at 13:09, Mark Morgan Lloyd < [email protected]> wrote:
> Ludo Brands wrote: > >> On 13.08.2011 23:11, Frank Church wrote: >>> >>>> Is there a Lazarus/FPC routine to list the processes running on a Linux >>>> system, the equivalent of EnumProcesses + GetCommandLineEx(Pids[x]) on >>>> Windows? >>>> >>> There is no cross platform way for that so you either need to list the >>> files in "/proc" (those directories that contain only a number are >>> processes) or parse the output of e.g. "top". "top" itself afaik scans >>> "/proc" as well. >>> >>> Regards, >>> Sven >>> >>> Perhaps parsing the ps output is easier since output is already quite >> configurable. ps is also parsing /proc. >> As long as you stick to linux, this solution can be made portable between >> the different flavors. Portablility with other unix's is problematic. >> > > ps parses /proc, but some of the command-line options might vary with > distro and version. I've used it reasonably successfully on Linux and > Solaris, my notes from a Perl script: > > # For Linux, ps is normally found in /bin/ps. For Solaris it is probably in > # /usr/bin/ps, but we never want to use the Berkeley one in /usr/ucb/ps > which > # has neither the --ppid nor the -f option; code below will probably need > to > # be refined for BSD. > > I had my "new" SGI system running IRIX briefly yesterday, and could see > numbered entries in /proc. I didn't investigate the content, or what ps was > like. > PS also varied from implementation to implementation. BusyBox have very limited version of PS for example. I think it's easier to look at PS code and implement one in Pascal then to parse the content PS. > > -- > Mark Morgan Lloyd > markMLl .AT. telemetry.co .DOT. uk > > [Opinions above are the author's, not those of his employers or colleagues] > > > -- > ______________________________**_________________ > Lazarus mailing list > [email protected].**freepascal.org<[email protected]> > http://lists.lazarus.**freepascal.org/mailman/**listinfo/lazarus<http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus> >
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