Manual Pages for UNIX Darwin command on man unlink
MyWebUniversity

Manual Pages for UNIX Darwin command on man unlink

RM(1) BSD General Commands Manual RM(1)

NAME

rrmm, uunnlliinnkk - remove directory entries

SYNOPSIS

rrmm [-ddffiiPPRRrrvvWW] file ...

uunnlliinnkk file

DESCRIPTION

The rrmm utility attempts to remove the non-directory type files specified

on the command line. If the permissions of the file do not permit writ-

ing, and the standard input device is a terminal, the user is prompted (on the standard error output) for confirmation. The options are as follows:

-dd Attempt to remove directories as well as other types of

files.

-ff Attempt to remove the files without prompting for confirma-

tion, regardless of the file's permissions. If the file does not exist, do not display a diagnostic message or modify the

exit status to reflect an error. The -ff option overrides any

previous -ii options.

-ii 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. The -ii option overrides

any previous -ff options.

-PP 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.

-RR Attempt to remove the file hierarchy rooted in each file

argument. The -RR option implies the -dd option. If the -ii

option is specified, the user is prompted for confirmation before each directory's contents are processed (as well as before the attempt is made to remove the directory). If the user does not respond affirmatively, the file hierarchy rooted in that directory is skipped.

-rr Equivalent to -RR.

-vv Be verbose when deleting files, showing them as they are

removed.

-WW Attempt to undelete the named files. Currently, this option

can only be used to recover files covered by whiteouts. The rrmm utility removes symbolic links, not the files referenced by the links. It is an error to attempt to remove the files ``.'' or ``..''. When the utility is called as uunnlliinnkk, only one argument, which must not

be a directory, may be supplied. No options may be supplied in this sim-

ple mode of operation, which performs an unlink(2) operation on the

passed argument. The rrmm utility exits 0 if all of the named files or file hierarchies were

removed, or if the -ff option was specified and all of the existing files

or file hierarchies were removed. If an error occurs, rrmm exits with a value >0. NNOOTTEE The rrmm command uses getopt(3) to parse its arguments, which allows it to

accept the `-' option which will cause it to stop processing flag

options at that point. This will allow the removal of file names that

begin with a dash (`-'). For example:

rm - -filename

The same behavior can be obtained by using an absolute or relative path reference. For example:

rm /home/user/-filename

rm ./-filename

SEE ALSO

rmdir(1), undelete(2), unlink(2), fts(3), getopt(3), symlink(7)

BUGS

The -PP option assumes that the underlying file system is a fixed-block

file system. In addition, only regular files are overwritten, other types of files are not. CCOOMMPPAATTIIBBIILLIITTYY

The rrmm utility differs from historical implementations in that the -ff

option only masks attempts to remove non-existent files instead of mask-

ing a large variety of errors. The -vv option is non-standard and its use

in scripts is not recommended. Also, historical BSD implementations prompted on the standard output, not the standard error output. STANDARDS The rrmm command is almost IEEE Std 1003.2 (``POSIX.2'') compatible, except that POSIX requires rrmm to act like rmdir(1) when the file specified is a

directory. This implementation requires the -dd option if such behavior

is desired. This follows the historical behavior of rrmm with respect to directories. The simplified uunnlliinnkk command conforms to Version 2 of the Single UNIX Specification (``SUSv2''). HISTORY A rrmm command appeared in Version 1 AT&T UNIX. BSD January 28, 1999 BSD




Contact us      |      About us      |      Term of use      |       Copyright © 2000-2019 MyWebUniversity.com ™