How to open the recycle bin function in Linux

Does the Linux system have a recycle bin? The answer is no, Linux system does not have a recycle bin in Windows, but Linux can implement the function of the recycle bin, how to achieve it? The following small series will introduce you to the way to open the recycle bin function in Linux. Let's take a look at it.

This article modeled on the Windows Recycle Bin function, using Bash scripts on Linux did achieve, create a script instead of rm command to delete a file or directory deletion do gymnastics. The script implements the following functions: directly delete files or directories larger than 2G, otherwise put them into the $HOME/trash directory; restore the deleted files in the trash directory to the original directory; the files are automatically stored in the trash directory for more than seven days. delete.

Overview

Deletion is an operation with a high risk factor, which can cause unpredictable losses if accidentally deleted. This danger is particularly evident in Linux systems. A simple statement: rm –rf /* will remove the entire system, and Linux will not refuse to execute because of the unreasonableness of this statement. In Windows, the recycle bin feature is provided to prevent accidental deletion. After the user performs the delete operation, the file is not deleted directly from the hard disk, but is placed in the recycle bin. If you find that a file has been deleted by mistake before emptying the recycle bin, you can restore the files in the recycle bin to their original location. Linux does not provide similar functions. Delete the command rm Once the execution is confirmed, the file will be deleted directly from the system and it will be difficult to recover.

Recycle Bin Composition

This article shares three main functions for the Recycle Bin: the Delete script, the logTrashDir script, and the restoreTrash script. The Delete script is a core script that repackages the rm command. Relative to the direct deletion of rm, the command will first move the file or directory to the $home/trash directory. If the user wants to delete the file directly, you can use the -f option, and the delete script will directly call the rm –f command to remove the file from the hard disk. The logTrashDir script is used to record the information of the deleted file into a hidden file under the trash directory. The restoreTrash script is used to restore the files or directories in the trash to the original path. On Linux systems, just put these three scripts in the /bin/directory and use chmod +X filename to give executable permissions, you can use them directly. The main part of each script is described below

Delete script

Create directory

First create a directory to hold deleted files, this article is in the user root directory $HOME Create a trash directory to hold the files. The specific code is as follows:

Listing 1. Create Recycle Bin Directory

realrm=“/bin/rm”

if [ ! -d ~/trash ]

then

mkdir -v ~/trash

chmod 777 ~/trash

fi

As shown, first determine if the directory has been created. If it is not established, the first time you run the script, create a trash directory. The variable realrm holds the Linux rm script location for calling under certain conditions to delete files or directories directly.

Output Help Information

This script outputs brief help information when the user enters only the script name without inputting the parameters. The code is as follows:

Listing 2. Output help information

if [ $# -eq 0 ]

then

echo “Usage:delete file1 [file2 file3. . . "&"There is a ff" The path to the deleted file or directory, separated by spaces.

Directly deleting files

Some files that users confirm to be invalid and want to delete directly should not be placed in the recycle bin, but should be deleted directly from the hard disk. The Delete script provides the -f option to do this:

Listing 3. Deleting files directly

while getopts “dfiPRrvW” opt

do

case $opt in

f)

exec $realrm “$@”

;;

*)

# do nothing

;;

esac

done
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