fadvise - Man Page

fadvise [-a advice] [-o offset] [-l length] filename

fadvise [-a advice] [-o offset] [-l length] -d file-descriptor

fadvise is a simple command wrapping posix_fadvise(2) system call that is for predeclaring an access pattern for file data.

-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.

fadvise has the following exit status values:

0

success

1

unspecified failure

Masatake YAMATO

posix_fadvise(2)

For bug reports, use the issue tracker at https://github.com/util-linux/util-linux/issues.

The fadvise command is part of the util-linux package which can be downloaded from Linux Kernel Archive.