linux程序设计——rm命令

简介

删除文件和目录

选项	长选项	描述
-i	–interactive	交互式删除
-r	–recursive	递归删除，当目录中存在目录时使用
-f	–force	强制删除，忽略不存在文件和交互式信息
-v	–verbose	显示删除过程中的信息

常用使用的选项及效果

删除文件时，可以直接用rm 文件名
删除文件夹时，就需要加-r，比如rm -r /tmp/a

---

附man rm

RM(1)                                       User Commands                                       RM(1)

NAME
       rm - remove files or directories

SYNOPSIS
       rm [OPTION]... [FILE]...

DESCRIPTION
       This  manual  page  documents  the  GNU  version  of  rm.  rm removes each specified file.  By
       default, it does not remove directories.

       If the -I or --interactive=once option is given, and there are more than three  files  or  the
       -r,  -R,  or  --recursive  are given, then rm prompts the user for whether to proceed with the
       entire operation.  If the response is not affirmative, the entire command is aborted.

       Otherwise, if a file is unwritable, standard input is a terminal, and the -f or --force option
       is  not  given,  or  the  -i  or --interactive=always option is given, rm prompts the user for
       whether to remove the file.  If the response is not affirmative, the file is skipped.

OPTIONS
       Remove (unlink) the FILE(s).

       -f, --force
              ignore nonexistent files and arguments, never prompt

       -i     prompt before every removal

       -I     prompt once before removing more than three files, or when removing  recursively;  less
              intrusive than -i, while still giving protection against most mistakes

       --interactive[=WHEN]
              prompt according to WHEN: never, once (-I), or always (-i); without WHEN, prompt always

       --one-file-system
              when removing a hierarchy recursively, skip any directory that is on a file system dif‐
              ferent from that of the corresponding command line argument

       --no-preserve-root
              do not treat '/' specially

       --preserve-root
              do not remove '/' (default)

       -r, -R, --recursive
              remove directories and their contents recursively

       -d, --dir
              remove empty directories

       -v, --verbose
              explain what is being done

       --help display this help and exit

       --version
              output version information and exit

       By default, rm does not remove directories.  Use the --recursive (-r or -R) option  to  remove
       each listed directory, too, along with all of its contents.

       To remove a file whose name starts with a '-', for example '-foo', use one of these commands:

              rm -- -foo

              rm ./-foo

       Note  that  if  you  use rm to remove a file, it might be possible to recover some of its con‐
       tents, given sufficient expertise and/or time.  For greater assurance that  the  contents  are
       truly unrecoverable, consider using shred.

AUTHOR
       Written by Paul Rubin, David MacKenzie, Richard M. Stallman, and Jim Meyering.

REPORTING BUGS
       GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
       Report rm translation bugs to <http://translationproject.org/team/>

COPYRIGHT
       Copyright  ©  2016  Free Software Foundation, Inc.  License GPLv3+: GNU GPL version 3 or later
       <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.  There is NO  WARRANTY,  to
       the extent permitted by law.

SEE ALSO
       unlink(1), unlink(2), chattr(1), shred(1)

       Full documentation at: <http://www.gnu.org/software/coreutils/rm>
       or available locally via: info '(coreutils) rm invocation'

GNU coreutils 8.26                          February 2017                                       RM(1)