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+NAME
+  pcu-fadvise - predeclare an access pattern on given files
+SYNOPSIS
+  pcu-fadvise [-a advice] [-o offset] [-l length] FILE...
+DESCRIPTION
+  A command-line interface to the posix_fadvise(2) syscall to tell
+  the kernel to optimize access patterns for specified files.
+OPTIONS
+  -a advice
+
+  File access pattern advice.
+  The advice must be one of the following:
+
+    normal
+    sequential
+    random
+    noreuse
+    willneed
+    dontneed
+
+  The default advice is normal.
+
+  -o offset
+
+  Apply advice only to the given byte offset.
+  This offset rounded down to the previous page offset.
+  The default offset is zero (beginning of the file)
+
+  -l length
+
+  Apply advice only to the given length in bytes.
+  This length is rounded up next page offset.
+  The default is to scan the entire file.
+
+OUTPUT
+  Errors only.
+ENVIRONMENT
+  none
+SEE ALSO
+  posix_fadvise(2), pcu(7)
+BUGS
+  None known. Email the author if you find any.
+AUTHOR
+  Eric Wong <normalperson@yhbt.net>