fadvise(1) — Linux manual page
FADVISE(1) User Commands FADVISE(1)
NAME
fadvise - utility to use the posix_fadvise system call
SYNOPSIS
fadvise [-a advice] [-o offset] [-l length] filename
fadvise [-a advice] [-o offset] [-l length] -d file-descriptor
DESCRIPTION
fadvise is a simple command wrapping posix_fadvise(2) system call
that is for predeclaring an access pattern for file data.
OPTIONS
-d, --fd file-descriptor
Apply the advice to the file specified with the file
descriptor instead of open a file specified with a file name.
-a, --advice advice
See the command output with --help option for available
values for advice. If this option is omitted, "dontneed" is
used as default advice.
-o, --offset offset
Specifies the beginning offset of the range, in bytes. If
this option is omitted, 0 is used as default advice.
-l, --length length
Specifies the length of the range, in bytes. If this option
is omitted, 0 is used as default advice.
-h, --help
Display help text and exit.
-V, --version
Print version and exit.
EXIT STATUS
fadvise has the following exit status values:
0
success
1
unspecified failure
AUTHORS
Masatake YAMATO <yamato@redhat.com>
SEE ALSO
posix_fadvise(2)
REPORTING BUGS
For bug reports, use the issue tracker at
https://github.com/util-linux/util-linux/issues.
AVAILABILITY
The fadvise command is part of the util-linux package which can
be downloaded from Linux Kernel Archive
<https://www.kernel.org/pub/linux/utils/util-linux/>. This page
is part of the util-linux (a random collection of Linux
utilities) project. Information about the project can be found at
⟨https://www.kernel.org/pub/linux/utils/util-linux/⟩. If you have
a bug report for this manual page, send it to
util-linux@vger.kernel.org. This page was obtained from the
project's upstream Git repository
⟨git://git.kernel.org/pub/scm/utils/util-linux/util-linux.git⟩ on
2024-06-14. (At that time, the date of the most recent commit
that was found in the repository was 2024-06-10.) If you discover
any rendering problems in this HTML version of the page, or you
believe there is a better or more up-to-date source for the page,
or you have corrections or improvements to the information in
this COLOPHON (which is not part of the original manual page),
send a mail to man-pages@man7.org