-.\" Copyright (c) 1990 The Regents of the University of California.
-.\" All rights reserved.
+.\" Copyright (c) 1990, 1993, 1994
+.\" The Regents of the University of California. All rights reserved.
.\"
.\" This code is derived from software contributed to Berkeley by
.\" the Institute of Electrical and Electronics Engineers, Inc.
.\"
-.\" %sccs.include.redist.man%
+.\" %sccs.include.redist.roff%
.\"
-.\" @(#)rm.1 6.8 (Berkeley) %G%
+.\" @(#)rm.1 8.3 (Berkeley) %G%
.\"
-.Vx
.Dd
.Dt RM 1
.Os
.Nd remove directory entries
.Sh SYNOPSIS
.Nm rm
-.Op Fl f Li \&| Fl i
-.Op Fl dRr
+.Op Fl f | Fl i
+.Op Fl dPRrW
.Ar file ...
.Sh DESCRIPTION
The
output) for confirmation.
.Pp
The options are as follows:
-.Tw 8n
-.Tp Fl d
+.Bl -tag -width flag
+.It Fl d
Attempt to remove directories as well as other types of files.
-.Tp Fl f
+.It Fl f
Attempt to remove the files without prompting for confirmation,
regardless of the file's permissions.
If the file does not exist, do not display a diagnostic message or modify
option overrides any previous
.Fl i
options.
-.Tp Fl i
+.It Fl i
Request confirmation before attempting to remove each file, regardless of
the file's permissions, or whether or not the standard input device is a
terminal.
option overrides any previous
.Fl f
options.
-.Tp Fl R
+.It Fl P
+Overwrite regular files before deleting them.
+Files are overwritten three times, first with the byte pattern 0xff,
+then 0x00, and then 0xff again, before they are deleted.
+.It Fl R
Attempt to remove the file hierarchy rooted in each file argument.
The
.Fl R
If the user does not respond affirmatively, the file hierarchy rooted in
that directory is skipped.
.Pp
-.Tp Fl r
+.It Fl r
Equivalent to
.Fl R .
-.Tp
+.It Fl W
+Removes a whiteout.
+.El
.Pp
The
.Nm rm
.Sh SEE ALSO
.Xr rmdir 1 ,
.Xr unlink 2 ,
-.Xr fts 3
+.Xr unwhiteout 2 ,
+.Xr fts 3 ,
+.Xr symlink 7
+.Sh BUGS
+The
+.Fl P
+option assumes that the underlying file system is a fixed-block file
+system.
+UFS is a fixed-block file system, LFS is not.
+In addition, only regular files are overwritten, other types of files
+are not.
.Sh COMPATIBILITY
The
.Nm rm
option only masks attempts to remove non-existent files instead of
masking a large variety of errors.
.Pp
-Also, historical BSD implementations prompted on the standard output,
+Also, historical
+.Bx
+implementations prompted on the standard output,
not the standard error output.
.Sh STANDARDS
The
.Nm rm
-function is expected to be POSIX 1003.2 compatible.
+command is expected to be
+.St -p1003.2
+compatible.