02-11-2006
Atleast help me with this !!
Iam working on Free BSD 5.3 version. U all know that the output of 'df' command looks as follows:
Filesystem 1K-blocks Used Avail Capacity Mounted on
/dev/ad0s1a 253678 59116 174268 25% /
devfs 1 1 0 100% /dev
/dev/ad0s1e 253678 24280 209104 10% /tmp
/dev/ad0s1f 8913022 2615376 5584606 32% /usr
/dev/ad0s1d 253678 30246 203138 13% /var
devfs 1 1 0 100% /var/named/dev
Now i want to check which partition if greater than 90% full without scanning the first row of record. How to do this ? PLease anyone of u help me with this?
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LEARN ABOUT FREEBSD
fdescfs
FDESCFS(5) BSD File Formats Manual FDESCFS(5)
NAME
fdescfs -- file-descriptor file system
SYNOPSIS
fdescfs /dev/fd fdescfs rw 0 0
DESCRIPTION
The file-descriptor file system, or fdescfs, provides access to the per-process file descriptor namespace in the global file system names-
pace. The conventional mount point is /dev/fd.
The file system's contents appear as a list of numbered files which correspond to the open files of the process reading the directory. The
files /dev/fd/0 through /dev/fd/# refer to file descriptors which can be accessed through the file system. If the file descriptor is open
and the mode the file is being opened with is a subset of the mode of the existing descriptor, the call:
fd = open("/dev/fd/0", mode);
and the call:
fd = fcntl(0, F_DUPFD, 0);
are equivalent.
Flags to the open(2) call other than O_RDONLY, O_WRONLY and O_RDWR are ignored.
Note: /dev/fd/0, /dev/fd/1 and /dev/fd/2 files are created by default when devfs alone is mounted. fdescfs creates entries for all file
descriptors opened by the process.
FILES
/dev/fd/#
EXAMPLES
To mount a fdescfs volume located on /dev/fd:
mount -t fdescfs null /dev/fd
SEE ALSO
devfs(5), mount(8)
HISTORY
The fdescfs file system first appeared in 4.4BSD. The fdescfs manual page first appeared in FreeBSD 2.2.
AUTHORS
The fdescfs manual page was written by Mike Pritchard <mpp@FreeBSD.org>, and was based on the manual page written by Jan-Simon Pendry.
BSD
September 18, 2010 BSD