CN109725984B

CN109725984B - Method for remotely stopping executing Shell command

Info

Publication number: CN109725984B
Application number: CN201811584238.8A
Authority: CN
Inventors: 陈技伟
Original assignee: China Telecom Fufu Information Technology Co Ltd
Current assignee: China Telecom Fufu Information Technology Co Ltd
Priority date: 2018-12-24
Filing date: 2018-12-24
Publication date: 2023-03-24
Anticipated expiration: 2038-12-24
Also published as: CN109725984A

Abstract

The invention discloses a method for remotely stopping an executing Shell command, which comprises the following steps: 1) The front-end page submits a request for executing the Shell command to the server; 2) The server side transmits a Shell command execution request to the command execution Agent; 3) The command execution Agent executes the Shell command on the host; 4) The server caches the received PID and the global unique ID returned by the Agent end, and updates the execution state to be 'executing'; 5) Update the front-end page "stop command" button as available; 6) If the currently executed Shell command needs to be stopped or the page is closed, clicking a stop command button or monitoring a page closing event, and sending a stop command request to the server by the front-end page; 7) The server side transmits a stop command request to the command execution Agent; 8) After receiving the stop command request, the command execution Agent executes a KILL PID command and ends the corresponding process; 9) The front end page prompts "process stop success". The invention can improve the user experience and avoid the waste of system resources.

Description

Method for remotely stopping executing Shell command

Technical Field

The present invention relates to a method of remotely stopping an executing Shell command.

Background

Currently, the Shell command is remotely executed through a front-end page, and if the executing command needs to be stopped, the PID is acquired through executing a PS command, and then the executing command needs to be stopped through the PID. It is difficult to accurately determine which command needs to be stopped if there are multiple commands of the same name executing even with human intervention. In addition, when the front-end page executes the remote Shell command, the command execution time is often too long, especially, certain query class commands mainly return query results to the executor, if the execution time is long and the executor already closes the page, the command continues to execute at the moment, which has no meaning, and unnecessary consumption is caused to system resources.

Disclosure of Invention

The invention aims to provide a method for remotely stopping the executing Shell command, which can improve the use experience of a user and avoid the waste of system resources.

In order to achieve the purpose, the invention adopts the following technical scheme:

a method of remotely stalling an executing Shell command, the method comprising the steps of:

1) The front-end page submits a Shell command execution request to the server, the content of the Shell command execution request comprises a brand-new globally unique ID, and a thread is started to poll the server execution result;

2) After receiving a Shell command execution request from a front end, a server forwards the Shell command execution request to a command execution Agent, wherein the Shell command execution request content contains a global unique ID sent by a front end page;

3) The command execution Agent executes the Shell command on the host after receiving the Shell command execution request, returns the command immediately after the execution, and returns the PID and the global unique ID for executing the Shell command to the server;

4) The server caches the received PID and the global unique ID returned by the Agent end, and updates the execution state to be 'executing';

5) The front page polls to the server to change the execution state into 'executing', and meanwhile, the 'stop command' button of the front page is updated to be available;

6) If a currently executed Shell command needs to be stopped or a page is closed, clicking a stop command button or monitoring a page closing event, and sending a stop command request to a server by a front-end page, wherein the content of the stop command request comprises the global unique ID generated in the step 1);

7) The server receives the stop command request, forwards the stop command request to the command execution Agent, and the stop command request content comprises the globally unique ID sent by the front-end page;

8) After receiving the command stopping request, the command executing Agent executes a KILL PID command, ends a corresponding process and returns an execution result to the server;

9) The server returns the execution result to the front-end page, and the front-end page prompts that the process is stopped successfully.

By adopting the technical scheme, the invention has the following beneficial effects:

1. the executing command can be stopped at any time, and the use experience of the front end to remotely execute the Shell command is improved.

2. And when the page is closed, the executing command is stopped, so that the waste of system resources is avoided.

Detailed Description

The invention discloses a method for remotely stopping an executing Shell command, which comprises the following steps:

2) After receiving a Shell command execution request from a front end, the server forwards the Shell command execution request to a command execution Agent, wherein the Shell command execution request content comprises a global unique ID sent by a front end page;

3) The command execution Agent executes the Shell command on the host after receiving the Shell command execution request, immediately returns the Shell command after the execution, and returns the PID and the global unique ID for executing the Shell command to the server;

4) The server caches the PID and the global unique ID returned by the Agent terminal, and updates the execution state to be 'executing';

5) The front-end page polls to change the execution state of the server into 'executing', and meanwhile, a 'stop command' button of the front-end page is updated to be available;

6) If the currently executed Shell command needs to be stopped or the page is closed, clicking a stop command button or monitoring a page closing event (monitoring page closing is optional operation), sending a stop command request to the server by the front-end page, wherein the content of the stop command request comprises the globally unique ID generated in the step 1);

The invention can be applied to scenes that the command execution time is long and the user does not want to wait or the user does not have significance to wait, and can automatically execute the stop command operation when the user closes the page or actively clicks the stop button, thereby avoiding unnecessary waiting. The user experience is improved, and the waste of system resources is avoided.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims

1. A method of remotely stopping an executing Shell command, characterized by: the method comprises the following steps:

6) If the currently executed Shell command needs to be stopped or the page is closed, clicking a stop command button or monitoring a page closing event, and sending a stop command request to a server by a front-end page, wherein the content of the stop command request comprises the globally unique ID generated in the step 1);