09-19-2012
"The -v option is useless with df."
-v option for displaying the used blocks which by default don't show up in df.
-------------------------
Lastly,Will it be correct to say from the following , that :
# du -xk / | tail -1
38195512
# df -k -v
Mount Dir Filesystem blocks used free %used
/ /dev/root 871678974 64231830 807447144 8%
/stand /dev/boot 40959 6413 34546 16%
For my / partition
total partition space (df)= 871678974 blocks = 871.6 gb (approx.)
present used space by whole partition (df -v) = 64231830 blocks= 64.2 gb (approx.)
space usage by files and directories (du) = 38195512 blocks = 38.1 gb (approx.)
space used by filesystem entities/data = 64.2 - 38.1 gb = 26.1 gb (approx.)
-------------
regards,
Dexter
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LEARN ABOUT CENTOS
approx
APPROX(8) System Manager's Manual APPROX(8)
NAME
approx - proxy server for Debian archive files
SYNOPSIS
approx [OPTION]...
DESCRIPTION
approx responds to HTTP requests made by apt-get(8). It maintains a cache of Debian archive files that have been previously downloaded, so
that it can respond with a local copy when possible. If a file not in the cache is requested, approx will download it from a remote Debian
repository and deliver the contents to the client, simultaneously caching it for future use.
Over time, the approx server cache will grow to contain multiple, unneeded versions of Debian packages. The approx-gc(8) program removes
these from the cache.
OPTIONS
-c file, --config file
Specify an additional configuration file. May be used multiple times.
USAGE
approx is invoked by inetd(8).
EXAMPLES
Suppose that a client machine's /etc/apt/sources.list file contains the following lines:
deb http://apt:9999/debian testing main
deb http://apt:9999/security testing/updates main
deb-src http://apt:9999/debian unstable main
In this example, apt is the hostname of the approx server machine on the local network. Each distribution, such as "debian" or "security",
is mapped to a remote repository in the approx server's configuration file.
For example, the approx.conf file on the approx server might contain the lines
debian http://ftp.debian.org/debian
security http://security.debian.org
The mapping scheme is very simple. If the approx.conf file contains the line
repository http://remote-host/initial/path
then any request to the approx server of the form
http://approx-server/repository/rest/of/URL
is rewritten to
http://remote-host/initial/path/rest/of/URL
when there is a "cache miss", and that file is cached as
/var/cache/approx/repository/rest/of/URL
(Note that the repository name on the left-hand side is not included in the rewritten URL unless it is explicitly mentioned in the right-
hand side's initial path.)
FILES
/etc/approx/approx.conf
Configuration file for approx and related programs.
/var/cache/approx
Default cache directory for archive files.
SEE ALSO
approx.conf(5), inetd(8), approx-import(8), approx-gc(8), apt-get(8), sources.list(5)
AUTHOR
Eric Cooper <ecc@cmu.edu>
May 2011 APPROX(8)