Shulou(Shulou.com)06/01 Report--

After linux rm deletes the file, the recovery is more troublesome. Even if the file name is restored, the file name format becomes a string of numbers.

Modify the environment variables of root users

Vi / .bashrc

Alias for comment line 5

# alias rm='rm-i'

The last line adds the following

Mkdir-p ~ / .trash

Alias rm=trash

Alias r=trash

Alias rl='ls ~ / .trash'

Alias ur=undelfile

Undelfile ()

{

Mv-I / .trash/$@. /

}

Trash ()

{

Mv $@ ~ / .trash/

}

Cleartrash ()

{

Read-p "clear sure? [n]" confirm

[$confirm = ='y'] | | [$confirm = ='Y'] & & / bin/rm-rf ~ / .trash/*

}

Reload environment variabl

Source / .bashrc

Use the command ll-a to look at the directory and find that there is an extra directory .trash, which is used for deleted files.

Drwxr-xr-x. 2 root root 4096 Jun 4 11:31 .trash

Delete a file

[root@localhost ~] # rm percona-xtrabackup_2.2.3.orig.tar.gz

Check the directory and find that the deleted files are in the Recycle Bin directory

[root@localhost ~] # ll .trash /

Total 33780

-rw-r--r--. 1 root root 34584359 Jun 2 09:39 percona-xtrabackup_2.2.3.orig.tar.gz

If you need to empty the Recycle Bin file

Use the following command

[root@localhost ~] # cleartrash

Clear sure? [n] y

Check it again and find it's empty.

[root@localhost ~] # ll .trash /

Total 0

Although rm is defined by an alias, you can delete files with an absolute path

For example, / bin/rm 1.txt

It is not saved to the .trash directory.

If you need to define files that are automatically cleaned for 7 days to delete

You can write a script.

#! / bin/bash

Find / root/.trash-ctime 7-type f-name "*"-exec / bin/rm {}\

Then call it in the task plan.

If Linux has other users besides root users who need to log in to the server, you also want them to use the Recycle Bin mechanism.

System environment variables can be modified

Vi / etc/profile

Add the last line

Mkdir-p ~ / .trash

Alias rm=trash

Alias r=trash

Alias rl='ls ~ / .trash'

Alias ur=undelfile

Undelfile ()

{

Mv-I / .trash/$@. /

}

Trash ()

{

Mv $@ ~ / .trash/

}

Cleartrash ()

{

Read-p "clear sure? [n]" confirm

[$confirm = ='y'] | | [$confirm = ='Y'] & & / bin/rm-rf ~ / .trash/*

}

Reload environment variabl

Source / etc/profile

Create a normal user test

Useradd a

Set password

Passwd a

Log in to Linux

Look at the directory and find that the .trash directory is created.

[a@localhost] $ll-a

Total 24

Drwx-. 3 an a 4096 Jun 4 11:45.

Drwxr-xr-x. 5 root root 4096 Jun 4 11:44..

-rw-r--r--. 1 an a 18 Oct 16 2014 .bash _ logout

-rw-r--r--. 1 an a 176 Oct 16 2014 .bash _ profile

-rw-r--r--. 1 an a 124 Oct 16 2014 .bashrc

Drwxrwxr-x. 2 an a 4096 Jun 4 11:45 .trash

Create an empty file

[a@localhost ~] $touch 1.txt

Delete a file

[a@localhost ~] $rm 1.txt

Check the Recycle Bin directory and find one more file

[a@localhost ~] $ll .trash /

Total 0

-rw-rw-r--. 1 an a 0 Jun 4 11:45 1.txt

If you don't like the location of the .trash directory, you can change the environment variable to another location and make sure the directory is writable.

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