Technician Toolkit
Command Library
Browse reviewed commands, syntax, examples, risks, and related troubleshooting knowledge.
Category
Storage
Scan a Windows Volume for File-System Errors
Runs an online NTFS scan to identify file-system problems without taking the volume offline.
Platforms
Inspect Windows Storage Volumes
Lists drive letters, file systems, health state, capacity, and remaining space.
Platforms
Category
System Integrity
Scan the Windows Component Store
Checks whether the running Windows image has repairable component-store corruption.
Platforms
Verify Protected Windows System Files
Scans protected Windows files and attempts to replace corrupted copies. Microsoft recommends updating and restarting Windows, then completing DISM RestoreHealth before this repair command.
Platforms
Category
System Information
Inspect Windows System Information
Displays operating system, hardware, firmware, and Windows configuration details.
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Category
Networking
Inspect Windows Network Adapters
Lists physical and virtual network adapters, link status, speed, and hardware address.
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Inspect Active Windows IP Configuration
Shows active interfaces with IP addresses, default gateways, and DNS servers.
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Understanding hostname
Displays the name of the current host computer. This name is used to identify the machine on a network.
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Inspect Windows Network Configuration with ipconfig
Displays TCP/IP configuration details for Windows network adapters.
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Understanding netstat
Displays active TCP/UDP connections, listening ports, routing table, interface statistics, and per-protocol statistics to help diagnose network and port usage on Windows.
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Understanding nslookup
The nslookup (name server lookup) command is a network administration command-line tool available for many computer operating systems for querying the Domain Name System (DNS) to obtain domain name or IP address mapping or for any other specific DNS record. It is used to troubleshoot DNS-related issues, such as verifying that a domain name resolves to the correct IP address or checking the availability and responsiveness of DNS servers.
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Test Network Connectivity with ping
Tests whether a remote host can be reached and measures basic response time using ICMP echo requests.
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Test Windows DNS Resolution
Queries DNS and displays the records returned for a hostname or domain.
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Understanding systeminfo
The `systeminfo` command displays detailed configuration information about a local or remote computer system, including operating system version, installed hotfixes, network card details, system boot time, and hardware specifications. It's a fundamental tool for quickly assessing a system's baseline state.
Platforms
Understanding tasklist
Displays running processes on local or remote Windows systems, with options to filter, format, and show modules, services, and verbose details.
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Test a Network Host and Service Port
Tests name resolution, reachability, routing, or a specific TCP service port.
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Understanding tracert
Traceroute (tracert) is a command-line utility that displays the path (route) and measures transit delays of packets across an Internet Protocol (IP) network to a target host. It records the route through the network by measuring the time-in-flight for packets to reach each successive router (hop) along the path and reports the IP address or hostname of each hop.
Platforms
Understanding whoami
whoami displays information about the currently logged-on user and their security context (account name, SID, groups, and privileges) on Windows.
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Category
Printing
Inspect Installed Windows Printers
Lists installed printers, drivers, ports, sharing state, and default status.
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Inspect Jobs in a Windows Print Queue
Lists documents currently held in a selected printer queue.
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Category
Performance
Inspect Running Windows Processes
Lists running processes and their resource use without stopping them.
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Category
System Services
Inspect Windows Service Status
Lists Windows services and reports whether each is running, stopped, or paused.
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Category
Diagnostics
Review Recent Windows Event Log Errors
Reads structured events from Windows logs to gather crash and system evidence.
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