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Solaris
why process PPID changes to 1
Post 302309625 by dangral on Wednesday 22nd of April 2009 12:00:04 PM
04-22-2009
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Hi all,
Please look into the following code :
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{
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int pid, ppid;
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{
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Hi,
I have been trying to come up with a script to run as a cron job to kill any processes that have PPID of 1. I have created a file that contains the PID and the PPID. How can I read this file and then execute a kill on any PID where PPID is 1. The file looks like this:
4904 1
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Is there any meaning on parent process id when it is equal = 1?
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I tried several times to get answer to the below problem. Someone can please help me?
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LEARN ABOUT DEBIAN
sysdata
sysdata(1) General Commands Manual sysdata(1) NAME
sysdata - find basic hardware system data SYNOPSIS
sysdata DESCRIPTION
After the atlc package is built, a small benchmark is run as part of the testing procedure. This benchmark tries to get some information about the hardware. The program sysdata displays the same hardware information that the benchmark will display, but runs in a fraction of a second, whereas the benchmark can take from 19 s (quad 1.4 GHz Itainium 2 machine) to 14,906 s (for a very old 33.3 MHz Cray Y-MP). There are no options or arguments to sysdata The information gathered on hardware and software both developed by the same company (i.e. Solaris on Suns, AIX on IBM RS/6000, IRIX on SGI, ... etc etc) is generally more informative than the free systems (Linux, NetBSD, OpenBSD, FreeBSD) where it is usually impossible to get much hardware information. EXAMPLES
Here are some examples of the use of sysdata on a number of systems. The large number of examples is for my own use as much as anything, so I can keep track of the development of sysdata and see easily where it needs extending. Examples are presented for: 1) Sun Ultra 80 running Solaris 9 2) HP C3000 running HP-UX 11 3) SGI Octane running IRIX 6.5.16 4) IBM RS/6000 running AIX 5.2 5) Dec Alpha 600a Personal Workstation running Tru64 5.1B 6) Cray Y-MP running UNICOS 9 7) Sun SPARCstation 20 running NetBSD 1.6 8) Sun SPARCstation 20 running OpenBSD 3.2 9) Sun SPARCstation 20 running Debian Linux 10) Sun SPARCstation 20 running Solaris 2.5 11) Generic PC with 350 MHz Pentium II running Redhat Linux 7.2 Here's the output from sysdata on these 11 systems. e.g. 1 (Sun Ultra 80 running Solaris 9) Hardware provider: Sun_Microsystems Hardware platform: SUNW,Ultra-80 Machine: sun4u Sysname: SunOS Release: 5.9 Version: Generic_112233-06 Nodename: sparrow #CPUs supported: 4 #CPUs online: 4 CPU type: sparcv9 FPU type: sparcv9 Speed: 450 MHz RAM: 4096 Mb L1 data cache unknown kB L1 instruction cache: unknown kB L2 cache: unknown kB Here's an example on a HP 9000 series Visualize C3000 workstation, fitted with one 400 MHz PA-RISC 8500 CPU and 1.5 Gb of RAM e.g. 2 (HP 9000 series Visualize C3000) Hardware provider: HP Hardware platform: unknown Machine: 9000/785 Sysname: HP-UX Release: B.11.00 Version: A Nodename: robin #CPUs supported: 1 #CPUs online: 1 CPU type: 532 FPU type: 1048577 Speed: 400.0 MHz RAM: 1536 Mb L1 data cache unknown kb L1 instruction cache: unknown kb L2 cache: unknown kb Here's another example this time on an SGI Octane R10000 with 2 x 195 MHz processors. Note the CPU and FPU types reported at not the R10000 and R10010 that are reported by SGI's hinv. sysdata is not meant to replace other more sophisticated ways of obtaining system information (such as hinv on IRIX), but its data is useful to record for benchmarking purposes. e.g. 3 (SGI Octane R1000) Hardware provider: SGI Hardware platform: unknown Machine: IP30 Sysname: IRIX64 Release: 6.5 Version: 04101931 Nodename: owl #CPUs supported: unknown #CPUs online: 2 CPU type: 2343 FPU type: 2304 Speed: 195 MHz RAM: 1024 Mb L1 data cache 32 kB L1 instruction cache: 32 kB L2 cache: 1024 kB Here's an example using an IBM RS/6000 F50 with 4 x 332 MHz CPUs and 1 GB of RAM. e.g. 4 (IBM RS/6000 F50) Hardware provider: IBM Hardware platform: unknown Machine: 000245984C00 Sysname: AIX Release: 2 Version: 5 Nodename: starling #CPUs supported: unknown #CPUs online: 4 CPU type: unknown FPU type: unknown Speed: unknown MHz RAM: 1024 Mb L1 data cache unknown kB L1 instruction cache: unknown kB L2 cache: unknown kB And here's an example from a single 599 MHz processor Dec Alpha 600a Personal Workstation running Tru64 5.1B e.g. 5 (Dec Alpha 600a Personal Workstation) Hardware provider: unknown Hardware platform: Digital_Personal_WorkStation_600au Machine: alpha Sysname: OSF1 Release: V5.1 Version: 2650 Nodename: dobermann.localhost.ntlworld.co #CPUs supported: 1 #CPUs online: 1 CPU type: EV5.6_(21164A) FPU type: unknown Speed: 599 MHz RAM: 1024 Mb L1 data cache unknown kb L1 instruction cache: unknown kb L2 cache: unknown kb Here's some data collected on a very old Cray Y-MP, which was introduced in 1991. e.g 6 (Cray Y-MP running UNICOS) Hardware provider: Cray Hardware platform: Y-MP Machine: CRAY_Y-MP Sysname: sn5176 Release: 9.0.2.2 Version: sin.0 Nodename: sn5176 #CPUs supported: unknown #CPUs online: 4 CPU type: unknown FPU type: unknown Speed: 33.3 MHz RAM: unknown Mb L1 data cache unknown kb L1 instruction cache: unknown kb L2 cache: unknown kb That is all the examples of commercial hardware running the operating systems made by the manufacturers of the hardware. The following are free UNIX versions. In these cases the data gathered is never as complete. In particular the amoumt of memory reported if often less than the real amount due to memory taken by the operating system (kernel etc). The number of processors the system can support is never avail- able. Here's the first such non-commercial UNIX from a single processor Sun SPARCstation 20 running NetBSD 1.6. e.g. 7 (Sun SPARCstation 20 running NetBSD 1.6) Hardware provider: unknown Hardware platform: unknown Machine: sparc Sysname: NetBSD Release: 1.6 Version: NetBSD_1.6_(GENERIC)_#0:_Mon_Sep__9_08:2sparc Nodename: blackbird #CPUs supported: unknown #CPUs online: 1 CPU type: rg:/autobuild/sparc/OBJ/autobuild/src/sys/arch/sparc/compile/GENERIC FPU type: unknown Speed: unknown MHz RAM: 255 Mb L1 data cache unknown kb L1 instruction cache: unknown kb L2 cache: unknown kb Here's data from a Sun SPARCstation 20 running OpenBSD 3.2. The machine has 320 Mb of RAM, not 318 Mb as indicated. The number of proces- sors the system supports is reported as unknown, but should the system have been running Solaris 9, as in the example 1 (sparrow), then this information would have been determined, but it is not available under OpenBSD - or Solaris 2.5 for that matter. e.g. 8 (Sun SPARCstation 20 running OpenBSD 3.2) Hardware provider: unknown Hardware platform: unknown Machine: sparc Sysname: OpenBSD Release: 3.2 Version: GENERIC#36 Nodename: crow.crow.localdomain #CPUs supported: unknown #CPUs online: 1 CPU type: unknown FPU type: unknown Speed: unknown MHz RAM: 319 Mb L1 data cache unknown kb L1 instruction cache: unknown kb L2 cache: unknown kb The next machine is a Sun SPARCstation 20 running Debian Linux. The version of Debian is unknown, but clearly sysdata is unable to deter- mine this. e.g. 9 (Sun SPARCstation 20 running Debian Linux) Hardware provider: unknown Hardware platform: unknown Machine: sparc Sysname: Linux Release: 2.2.20 Version: #1_Fri_Nov_16_15:48:02_EST_2001 Nodename: dove #CPUs supported: unknown #CPUs online: 1 CPU type: unknown FPU type: unknown Speed: unknown MHz RAM: 281 Mb L1 data cache unknown kb L1 instruction cache: unknown kb L2 cache: unknown kb Here's data from a Sun SPARCstation 20 running Solaris 2.5 (SunOS 5.5). The machine probably does have 352 Mb of RAM as reported. The num- ber of processors the system supports is reported as unknown, but should the system have been running Solaris 9, as in the example 1 (spar- row), then this information would have been determined, but it is not available under Solaris 2.5. e.g. 10 (Sun SPARCstation 20 Solaris 2.5) Hardware provider: Sun_Microsystems Hardware platform: SUNW,SPARCstation-20 Machine: sun4m Sysname: SunOS Release: 5.5 Version: Generic Nodename: bluetit #CPUs supported: unknown #CPUs online: 2 CPU type: sparc FPU type: sparc Speed: 125 MHz RAM: 352 Mb L1 data cache unknown kb L1 instruction cache: unknown kb L2 cache: unknown kb Here's a standard PC, fitted with one processor e.g. 11 (350 MHz Pentium II PC running Redhat Linux) Hardware provider: unknown Hardware platform: unknown Machine: i686 Sysname: Linux Release: 2.4.18-5 Version: #1_Mon_Jun_10_15:31:48_EDT_2002 Nodename: tiger #CPUs supported: unknown #CPUs online: 1 CPU type: unknown FPU type: unknown Speed: unknown MHz RAM: 123 Mb L1 data cache unknown kb L1 instruction cache: unknown kb L2 cache: unknown kb FILES
sysdata does not read/write any files. SEE ALSO
atlc(1) create_bmp_for_circ_in_circ(1) create_bmp_for_circ_in_rect(1) create_bmp_for_microstrip_coupler(1) create_bmp_for_rect_cen_in_rect(1) create_bmp_for_rect_cen_in_rect_coupler(1) create_bmp_for_rect_in_circ(1) create_bmp_for_rect_in_rect(1) create_bmp_for_stripline_coupler(1) create_bmp_for_symmetrical_stripline(1) design_coupler(1) find_optimal_dimensions_for_microstrip_coupler(1) hinv - SGI's IRIX only. readbin(1) http://atlc.sourceforge.net - Home page http://sourceforge.net/projects/atlc - Download area atlc-X.Y.Z/docs/html-docs/index.html - HTML docs atlc-X.Y.Z/docs/qex-december-1996/atlc.pdf - theory paper atlc-X.Y.Z/examples - examples Dr. David Kirkby atlc-4.5.0 28th Sep 2003 sysdata(1)