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 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:
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.