01-18-2006
Shell script to calc sum of bytes used by files
I'm looking to create a Korn Shell script that, if given a directory as an arg, will calc bytes used by all files in the given directory and display that info. If no command line arg is given the program is to calc and display the bytes used by all the files in the pwd.
Example output:
/export/home/me> ./filesizes /export/home
6325832
Thanks...
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LEARN ABOUT DEBIAN
hwloc-gather-topology
HWLOC-GATHER-TOPOLOGY(1) hwloc HWLOC-GATHER-TOPOLOGY(1)
NAME
hwloc-gather-topology - Saves the relevant Linux topology files and the lstopo output for later (possibly offline) usage.
SYNOPSIS
hwloc-gather-topology [options] <path>
OPTIONS
-h --help display help message and exit
DESCRIPTION
hwloc-gather-topology saves all the relevant topology files into an archive (<path>.tar.bz2) and the lstopo output (<path>.output). The
utility for example stores the /proc/cpuinfo file and the entire /sys/devices/system/node/ directory tree.
These files can be used later to explore the machine topology offline. Once the tarball has been extracted, it may for instance be given
to some hwloc command-line utilities through their --input option. It is also possible to override the default topology that the hwloc
library will read by setting the extracted path in the HWLOC_FSROOT environment variable.
Both archive and lstopo output may also be submitted to hwloc developers to debug issues remotely.
hwloc-gather-topology is a Linux specific tool, it is not installed on other operating systems.
NOTE: It is highly recommended that you read the hwloc(7) overview page before reading this man page.
EXAMPLES
To store topology information to be used later (possibly on a different host) please run:
hwloc-gather-topology /tmp/myhost
It will store all relevant topology files in the /tmp/myhost.tar.bz2 archive and the lstopo output in the /tmp/myhost.output file. These
files can be transferred on another host for later/offline analysis and/or as the input to various hwloc utilities.
To use these data with hwloc utilities you have to unpack myhost.tar.bz2 archive first:
tar jxvf /tmp/myhost.tar.bz2
A new directory named myhost now contains all topology files. Then you ask various hwloc utilities to use this topology instead of the one
of the real machine by passing --input myhost. To display the topology just run:
lstopo --input ./myhost
It is not necessary that the topology is extracted in the current directory, absolute or relative paths are also supported:
lstopo --input /path/to/remote/host/extracted/topology/
To see how hwloc would distribute 8 parallel jobs on the original host:
hwloc-distrib --input myhost --single 8
To get the corresponding physical indexes in the previous command:
hwloc-calc --input myhost --po --li --proclist $(hwloc-distrib --input myhost --single 8)
Any program may actually override the default topology with a given archived one even if it does not have a --input option. The
HWLOC_FSROOT environment variable should be used to do so:
HWLOC_FSROOT=myhost hwloc-calc --po --li --proclist $(hwloc-distrib --single 8)
All these commands will produce the same output as if executed directly on the host on which the topology information was originally gath-
ered by the hwloc-gather-topology script.
RETURN VALUE
Upon successful execution, hwloc-gather-topology will exit with the code 0.
hwloc-gather-topology will return nonzero exit status if any kind of error occurs, such as (but not limited to) failure to create the ar-
chive or output file.
SEE ALSO
hwloc(7), lstopo(1), hwloc-calc(1), hwloc-distrib(1)
1.4.1 Feb 27, 2012 HWLOC-GATHER-TOPOLOGY(1)