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 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
[34mMasatake YAMATO <yamato@redhat.com>
SEE ALSO
posix_fadvise(2)
REPORTING BUGS
For bug reports, use the issue tracker at [34mhttps://github.com/util-linux/util-linux/issues.
AVAILABILITY
The fadvise command is part of the util-linux package which can be downloaded from [34mLinux Kernel Archive
<https://www.kernel.org/pub/linux/utils/util-linux/>.
util-linux 2.39 2023-04-17 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 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
[34mMasatake YAMATO <yamato@redhat.com>
SEE ALSO
posix_fadvise(2)
REPORTING BUGS
For bug reports, use the issue tracker at [34mhttps://github.com/util-linux/util-linux/issues.
AVAILABILITY
The fadvise command is part of the util-linux package which can be downloaded from [34mLinux Kernel Archive
<https://www.kernel.org/pub/linux/utils/util-linux/>.
util-linux 2.39 2023-04-17 FADVISE(1)