Linux Commands: RM command

RM command

Function description

LinuxinRMthe command is to delete files and directories. When using-RFparameter, it is important to note that because the directory and the file are deleted,Delete one or more files or directories in a directory, if not used-Roption, youRMThe directory is not deleted. If you useRMto delete a file, you can usually still restore the file to its original state. Use the following:

RM [Options] File ...

Key Features

• Show entire file at once: Cat filename

• Create a file from the keyboard: cat > FileName can only create new files, cannot edit existing files

• Merge several files into one file: Cat file1 file2 > file
  

Command parameters

Options	Meaning
-F	The meaning of coercion, ignoring nonexistent files, never giving hints
-I.	For interactive deletion
R-r	Instructs RM to recursively delete all directories and subdirectories listed in the parameter
-V	Detailed display of the steps performed

Delete directory: Rm-rf/path/to/dir

Hazardous operation: RM-RF/* (6 and 7 with hints, 5 not)

Note: All unused files are recommended not to be deleted directly but moved to a dedicated directory: (simulated Recycle Bin), the 4th example below, is also a method of simulating the Recycle Bin.

Example

Use the-i parameter to prompt before deleting

[Email protected] ~]# cd/tmp [[email protected] tmp]# rm-i BASHRC #加入-i parameter, when deleted will be actively asked to avoid deleting the wrong file Rm:remove regular file ' BASHRC '? Y [[email protected] tmp]# rm-i bashrc* #使用通配符, remove all files starting with the TMP BASHRC Rm:remove regular file ' Bashrc_hlink '? Y Rm:remove Symbolic link ' bashrc_slink '? Y Rm:remove regular file ' Bashrc_slink_1 '? Y Rm:remove Symbolic link ' bashrc_slink_2 '? Y

Use-r recursive removal

[[email protected] tmp]# rmdir/tmp/etc #不能删除, because the directory is not empty,rmdir can only delete empty directory rmdir:failed to remove '/tmp/etc ': Directory not empty [[email protected] tmp]# rm-r/tmp/etc #按y确认, press CTRL + C to exit Rm:descend into directory '/tmp/etc '? ^c Because the identity is root, the default has been added to the-I option, so you have to press Y to delete! If you do not want to continue pressing Y, you can press [CTRL]-C] to end the work of RM. This is a protective action, if you are sure you want to delete this directory without asking, you can do this:          [Email protected] tmp]#/rm-r/tmp/etc Precede the command with a backslash to ignore the specified option for alias

-F parameter, force delete, System not prompt

[Email protected] tmp]# rm-f Test.log

Custom Recycle Bin Features

[email protected] tmp]# Myrm () {d=/tmp/$ (date +%y%m%d%h%m%s) mkdir-p $D; MV "[email protected]" $D && Echo "Moved to $D OK"; } [[email protected] tmp]# alias rm= ' Myrm ' [[email protected] tmp]# Touch 1.log 2.log 3.log [email protected] tmp]# LL Total 0 -rw-r--r--1 root root 0 Apr 7 14:19 1.log -rw-r--r--1 root root 0 Apr 7 14:19 2.log -rw-r--r--1 root root 0 Apr 7 14:19 3.log [Email protected] tmp]# RM [123].log Moved to/tmp/20160407142017 OK [Email protected] tmp]# ls/tmp/20160407142017/ 1.log 2.log 3.log

Delete files that begin with-

[[email protected] tmp]# touch./-bbb- [Email protected] tmp]# ls-l Total 0 -rw-r--r--1 root root 0 Apr 7 14:26-bbb- [Email protected] tmp]# rm-bbb- Mv:invalid option--'-' Try ' MV--help ' for more information. [Email protected] tmp]# RM./-bbb- Moved to/tmp/20160407142651 OK [Email protected] tmp]#

This article is from the "Zhao Dongwei blog" blog, make sure to keep this source http://zhaodongwei.blog.51cto.com/4233742/1871230

Linux Commands: RM command