A Linux RM command every day

Learn the command to create files and directories mkdir, today learn about the commands for deleting files and directories in Linux: RM command. RM is a commonly used command that removes one or more files or directories from a directory, and it can delete all files and subdirectories under a directory. For linked files, only the links are deleted and the original files remain unchanged.

RM is a dangerous command, especially when used, especially for novices, or 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.

1. Command format:

RM [Options] File ...

2. Command function:

Delete one or more files or directories in a directory, and RM does not delete the directory if the-r option is not used. If you use RM to delete a file, you can usually still restore the file to its original state.

3. Command parameters:

-I,--interactive for interactive deletion

- F,--force ignores nonexistent files and never gives hints

- R,-R,--recursive instructs RM to recursively delete all directories and subdirectories listed in the parameters

4. Command instance:

Instance one: Delete the Text1 after creating the Text1 file, the system will first ask whether to delete

Command:

RM file name

Output:

[BEGIN] 2015/12/24 23:44:26[[email protected] ~]# [[email protected] ~]# lsanaconda-ks.cfg install.log install.log.syslo G Log.txt text[[email protected] ~]# touch Text1[[email protected] ~]# lsanaconda-ks.cfg install.log install.log.syslo G Log.txt text Text1[[email protected] ~]# RM text1rm:remove Regular empty file ' Text1 '? Y[[email protected] ~]# lsanaconda-ks.cfg install.log install.log.syslog log.txt text[end] 2015/12/24 23:44:52

After entering the RM Text1 command, the system will ask whether to delete, enter Y (yes) to delete the file, and do not want to delete the data n (NO).

Example Two: forcibly delete the newly created Text1, the system no longer prompts.

Command:

Rm-f Text1

Output:

[BEGIN] 2015/12/24 23:48:02[[email protected] ~]# [[email protected] ~]# Touch Text1[[email protected] ~]# LSANACONDA-KS.C FG Install.log Install.log.syslog log.txt text text1[[email protected] ~]# rm-f text1[[email protected] ~]# Lsanacon Da-ks.cfg install.log install.log.syslog log.txt text[end] 2015/12/24 23:48:32

Example Three: Delete any new. txt files; Ask for confirmation before deleting

Command:

rm-i *.txt

output:

[begin] 2015/12/24 23:52:04   [[email  protected] ~]# lsanaconda-ks.cfg  install.log  install.log.syslog   text[[email protected] ~]# [[email protected] ~]# touch text1.txt  text2.txt text3.txt[[email protected] ~]# lsanaconda-ks.cfg  install.log   install.log.syslog  text  text1.txt  text2.txt  text3.txt[[email  protected] ~]# rm -i *.txtrm: remove regular empty file  ' Text1.txt '? yrm: remove regular empty file  ' text2.txt '?  yrm: remove  regular empty file  ' Text3.txt '? y[[email protected] ~]#  Lsanaconda-ks.cfg  install.log  install.log.syslog  text[end] 2015/12/24  23:52:36 

Example four: Delete all files in the text subdirectory and subdirectories

Command:

rm-r Text

output:

[begin] 2015/12/24 23:58:34[[email protected] ~]# lsanaconda-ks.cfg   Install.log  install.log.syslog  text[[email protected] ~]# tree /root /text//root/text/└── init.d    ├── dnsmasq    ├──  firstboot    ├── functions    ├── haldaemon     ├── halt    ├── htcacheclean    ├── httpd     ├── ip6tables    ├── iptables    ├──  irqbalance    ├── mdmonitor    ├── messagebus     ├── NetworkManager    ├── portreserve     ├── postfix    ├── psacct    ├── quota_nld     ├── udev-post    └── xinetd1 directory, 19 files[[email protected] ~]#  rm -r textrm: descend into directory  ' text '?  yrm: descend into  directory  ' text/init.d '? yrm: remove regular file  ' text/init.d/dnsmasq '?  yrm: remove regular file  ' Text/init.d/postfix '?  yrm: remove regular  file  ' Text/init.d/htcacheclean '? yrm: remove regular file  ' text/init.d/ Portreserve '? yrm: remove regular file  ' text/init.d/httpd '?  yrm: remove  regular file  ' Text/init.d/messagebus '? yrm: remove regular file  ' text /init.d/quota_nld '? yrm: remove regular file  ' Text/init.d/haldaemon '? yrm:  remove regular file  ' Text/init.d/halt '? yrm: remove regular file  ' text /init.d/mdmonitor '?  yrm: remove regular file  ' text/init.d/xinetd '? yrm: remove regular  file  ' text/init.d/iptables '? yrm: remove regular file  ' text/init.d/ip6tables '?  yrm: remove regular file  ' Text/init.d/networkmanager '? yrm: remove  regular file  ' Text/init.d/psacct '? yrm: remove regular file  ' text/init.d/ Irqbalance '? yrm: remove regular file  ' text/init.d/firstboot '?  yrm: remove  regular file  ' text/init.d/functions '? yrm: remove regular file  ' text/ Init.d/udev-post '? yrm: remove directory  ' text/init.d '? yrm: remove  directory  ' text '?  y[[email protected] ~]# [end] 2015/12/24 23:59:35

Example five: The RM-RF command will delete all files in the text subdirectory and subdirectories without one by one confirmation

Command:

RM-RF text

Output:

[begin] 2015/12/25 0:05:00[[email protected] ~]# lsanaconda-ks.cfg   Install.log  install.log.syslog  text[[email protected] ~]# tree /root /text/root/text└── init.d    ├── haldaemon    ├── halt     ├── htcacheclean    ├── httpd    ├──  NetworkManager    ├── portreserve    ├── postfix     ├── psacct    ├── quota_nld    ├──  rdisc    ├── restorecond    ├── rngd     ├── rsyslog    ├── wdaemon    ├── winbind     ├── wpa_supplicant    └── xinetd1 directory, 17 files [[email protected] ~]# rm -rf text[[email protected] ~]# lsanaconda-ks.cfg   Install.log  install.log.syslog[end] 2015/12/25 0:05:37

A Linux RM command every day