Linux knowledge Point, RM of one day

features : RM command to delete one or more files or directories (folders) in a directory.

• It can also delete a directory and all of its files and subdirectories.
• For linked files, only the links are deleted and the original files remain unchanged.
• Once the file is deleted, it cannot be restored.

The warning is: Use this RM-RF must be extra careful, Linux no Recycle Bin, once deleted will never find back. Especially for novices, the entire system will be destroyed in this command (e.g., RM *-rf under/(root directory)). So, before we execute RM, it's a good idea to check in which directory, exactly what to delete, and keep a high level of sanity in the operation.

Syntax:rm[Options]  file

Short options	Long options	Meaning
- F	--force	Ignore non-existent files, force Delete, no prompt.
- I.	--interactive	For interactive deletion
- R	--recursive	Recursively delete (in this directory) all files and directories
- v	--verbose	Detailed display of the steps performed

Common Parameters

Format: RM file
Delete file, the system will first ask whether to delete.

Format: Rm-f file
Forcibly deleting file, the system no longer prompts.

Format: Rm-rf dir
Forcibly delete all files and directories under directory dir, and delete dir itself.

Format: Rm-f *. log*
Delete the log file.

RM file nameDelete the file, the system will first ask whether to delete. [[email protected] test1]# ls-l total 4-rw-r--r--1 root root * 10-26 14:31 log.log [email protected] test1] #rm log.logrm: Do you want to delete the generic file "Log.log"? y [email protected] test1]# ls-l total 0[[email protected] test1]# Description: After entering the RM log.log command, the system will ask whether to delete, enter Y will delete the file, do not want to delete the data n.rm-f file nameForcibly delete the file, the system no longer prompts. [Email protected] test1]# ls-l total 4-rw-r--r--1 root root at 10-26 14:40 log1.log [[email protected] test1] #rm-f log1. Log[[email protected] test1]# ls-l total 0[[email protected] test1]#rm-i file nameDelete any files, delete the previous one by asking for confirmation [[email protected] test1]# ls-l total 8-rw-r--r--1 root root one 10-26 14:45 log1.log-rw-r--r--1 root ro OT 10-26 14:45 log2.log [[email protected] test1] #rm-I *.logrm: Do you want to delete the generic file "Log1.log"? Y RM: Do you want to delete the generic file "Log2.log"? y [[email protected] test1]# ls-l total 0[[email protected] test1]#rm-r Directory NameDelete all files in subdirectories and subdirectories [[email protected] test]# Ls-l total 24drwxr-xr-x 7 root root 4096 10-25 18:07 scf drwxr-xr-x 2 root root 40 10-26 14:51 test1 drwxr-xr-x 3 root root 4096 10-25 17:44 test2 drwxrwxrwx 2 root root 4096 10-25 17:46 test3 drwxr-xr- x 2 root root 4096 10-25 17:56 test4 drwxr-xr-x 3 root root 4096 10-25 17:56 test5 [[email protected] test] #rm-R TEST1RM: Do you want to enter the directory "Test1"? Y RM: Do you want to delete the generic file "Test1/log3.log"? Y RM: Do you want to delete the directory "Test1"?  y [[e-mail protected] test]# ls-l total 20drwxr-xr-x 7 root root 4096 10-25 18:07 scf drwxr-xr-x 3 root root 4096 10-25 17:44 Test2 drwxrwxrwx 2 root root 4096 10-25 17:46 test3 drwxr-xr-x 2 root root 4096 10-25 17:56 test4 drwxr-xr-x 3 root root 4096 10-25 17:56 TEST5 [[email protected] test]#RM-RF Directory NameDelete all files in directory and subdirectory without one by one confirmation [[email protected] test] #rm-rf test2[[email protected] test]# ls-l total 16drwxr-xr-x 7 root root 4096 10-25 18:07 scf drwxrwxrwx 2 root root 4096 10-25 17:46 test3 drwxr-xr-x 2 root root 4096 10-25 17:56 test4 drwxr-xr- X 3 root root 4096 10-25 17:56 test5 [[email protected] test]#RM---FDelete files beginning with-f [[email protected] test]# touch---f [[email protected] test]# ls---f-f[[email protected] test] #rm---fr M: Do you want to delete the general empty file "-F"? y [[email protected] test]# ls---f ls:-F: There is no file or directory [[email protected] test]# can also use the following procedure: [[email protected] test]# T Ouch./-f [[email protected] test]# ls./-f./-f[[email protected] test] #rm./-FRM: Delete the generic empty file "./-f"? y [[email protected] test]#

Linux knowledge Point, RM of one day