Introduction to Troubleshooting with Commands and Logs

This page keeps all original information and links. Japanese page

	Course code: troubleshoot1 Troubleshooting using commands and logs Introductory seminar This is a troubleshooting seminar where you will learn how to isolate client/server/network problems and identify the cause of each layer.

Seminar name/code	Date/time	Overview
Troubleshooting introductory seminar using commands and logs (code:troubleshoot1)	1 day (10:00-18:00)	This is a troubleshooting seminar where you can learn how to isolate client/server/network problems and identify their causes on a layer-by-layer basis. Learn tips and techniques for Windows/Linux commands, shell scripts, and log files (event viewer). Confirm system and network troubleshooting using standard commands and shell scripts log files and event viewers for Windows and Linux in a real machine environment. Use Windows/Linux log file/event viewer and filter Learn how to efficiently search logs by actually operating it. Learn how to isolate problems by layer and how to identify the cause for each layer.
Textbook and equipment used	Lecturer	Purpose
★Distribution ・Resume material ・CD-ROM ・USB memory ・Ikeriri bag magnet ★Lunch box ★Equipment used ・2 PCs per person (Windows/Linux) ・Smartphone (Android) ・Practice server ・LAN cable/router ・Network environment ・Whiteboard ・Projector	Megumi Takeshita Ikeriri★Network Service Co., Ltd.	Learn the concept of troubleshooting, identifying the cause, and the flow of troubleshooting using commands, shell scripts, and log files. For various troubles that occur in clients (OS/applications), servers (OS/applications), and networks, we will acquire methods to efficiently isolate them using the shortest route while being aware of the OSI layer. For Windows/Linux, we will use standard commands to check layer isolation and troubleshooting in a real machine environment. Additionally, you will learn how to use shell scripts (Bash/Command Prompt/Powershell) to further streamline and batch your work. Learn the types of log file/event viewers, how to filter, how to investigate, and efficient investigation methods. Learn how to check program operation, output symbol information, and investigate the cause of stoppages. Learn how to isolate troubles by OSI layer and identify their causes through practical training.
Seminar details New
Troubleshooting Guidelines Troubleshooting Order and Concepts Isolating by layer with commands Utilizing redirects and pipes Creating a simple shell script How to investigate the system Log file types and locations Filtering and searching log files		Physical layer/layer 2 troubleshooting Layer 3 troubleshooting Layer 4 troubleshooting Application (client/server) troubleshooting How to investigate a program Debugging an application (Appendix) Troubleshooting using packet capture