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Test Your Knowledge in Computers #44
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Data moves through the Internet in a data structure called a 'packet'.
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ptdump(1) [debian man page]

PTDUMP(1)						      General Commands Manual							 PTDUMP(1)

ptdump - Let's you dig into the contents of a PyTables file. SYNOPSIS
ptdump [-dvacih] [-R start,stop,step] file[:nodepath] DESCRIPTION
Allows you look into the contents of your PyTables files. It lets you see not only the data but also the metadata (that is, the structure and additional information in the form of attributes). OPTIONS
A summary of options is included below. -d Dump data information on leaves. -v Dump more metainformation on nodes. -a Show attributes in nodes (only useful when -v or -d are active). -c Show info of columns in tables (only useful when -v or -d are active). -i Show info of indexed column (only useful when -v or -d are active). -R start,stop,step Select a range of rows in the form "start,stop,step" for all leaves. -h Print help on usage. SEE ALSO
ptrepack(1). These utilities are documented fully by PyTables user's manual. AUTHOR
This manual page was written by Francesc Altet <>. July 7, 2007 PTDUMP(1)

Check Out this Related Man Page

x86info(1)						      General Commands Manual							x86info(1)

x86info -- display x86 CPU diagnostics SYNOPSIS
x86info [-a] [-c] [-f] [fB-F] [-m] [-mhz] [-r] [?] [--all] [--cache] [--flags] [--verbose] [--msr] [--mhz] [--registers] [--help] DESCRIPTION
This manual page documents x86info, a program which displays a range of information about the CPUs present in an x86 system. In order to make full use of this program you need to have the CPU ID and MSR device drivers in your kernel with accessible device files /dev/cpu/<n>/cpuid and /dev/cpu/<n>/msr. OPTIONS
This program follows the usual GNU command line syntax, with long options starting with two dashes (`-'). A summary of options is included below. ? --help Show summary of options. -a --all Show all information. Equivalent to -c -f -m -r -mhz. -c --cache Show TLB, cache sizes and cache associativity. -f --flags Show CPU feature flags. -m --msr Dump model specific registers. This feature is currently only supported on a few different processors. Future versions will include parsing of bits in MSRs for all processors. -mhz --mhz Estimate current clock rate. -mp --mptable Dump MP table showing CPUs BIOS knows about. -r --registers Show register values from all possible cpuid calls. -s --show-machine-check Show machine check exception information. -v --verbose Show verbose descriptions. AUTHOR
x86info was written by Dave Jones <>. This manual page was written by Mark Brown <> for the Debian GNU/Linux system (but may be used by others). Permission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License version 2. x86info(1)

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