本文共 5504 字，大约阅读时间需要 18 分钟。
命令简介：
该 命令用来删除Linux系统中的文件或目录。通常情况下rm不会删除目录，你必须通过指定参数-r或-R来删除目录。另外rm通常可以将该文件或目录恢复 （注意，rm删除文件其实只是将指向数据块的索引点（information nodes）释放，只要不被覆盖，数据其实还在硬盘上。如果想要保证文件的内容无法复原，可以使用命令shred 。 另外一般还是要慎用rm -rf *这样的命令。
执行权限 ：All User
指令所在路径：/bin/rm
命令语法：
rm [OPTION]... FILE...
命令参数：
| 参数 | 长参数 | 描叙 |
| -f | --force | 强制删除，忽略不存在的文件，从不给出提示。 |
| -i | --interactive | 交互模式删除文件，删除文件前给出提示。 |
| -r | --recursive | 递归的删除目录下面文件以及子目录下文件。 |
| -R | --recursive | 递归的删除目录下面文件以及子目录下文件。 |
| -v | --verbose | 显示运行时详细信息 |
| --help | 显示命令在线帮助 | |
| --version | 显示命令版本信息 |
使用示例：
1：查看获取rm命令的帮助信息。
[root@DB-Server kerry]# 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 a file is unwritable, the standard input is a tty, and the -f or --force option is not 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, never prompt
-i, --interactive
prompt before any removal
--no-preserve-root do not treat 鈥?鈥?specially (the default)
--preserve-root
fail to operate recursively on 鈥?鈥?
-r, -R, --recursive
remove directories and their contents recursively
-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 鈥?鈥? for example 鈥?foo鈥? use one of these commands:
rm -- -foo
rm ./-foo
Note that if you use rm to remove a file, it is usually possible to recover the contents of that file. If you want more assurance that the contents are
truly unrecoverable, consider using shred.
AUTHOR
Written by Paul Rubin, David MacKenzie, Richard Stallman, and Jim Meyering.
REPORTING BUGS