ACPI command in Linux with examples Last Updated : 03 Jul, 2024 Comments Improve Suggest changes Like Article Like Report ACPI is the command in Linux that helps the users in managing power settings. It also helps in monitoring the hardware status efficiently. It facilitates with providing essential information such as battery health, CPU temperatures, and fan speeds, providing support in system maintenance and performance optimization. In thi s article we through discussing what are acpi commands and how to utilize ACPI commands effectively through practical examples, helping users enhance their control over power management and hardware configurations on Linux systems.Table of ContentWhat is acpi Command?Options of acpi CommandUsage and Examples of acpi CommandDifference between acpi, acpi-listen and acpi_call CommandsFeatures of ACPI CommandWhat is acpi Command?The `acpi` command in Linux helps in retrieving and displaying the critical system information that is related to power management and hardware status. It facilitates with providing a detailed information such as battery status, CPU temperatures, fan speeds, and power consumption data. It is essential for monitoring system health and optimizing performance. This command is valuable for both troubleshooting hardware issues and implementing effective power management strategies on Linux systems.Syntaxacpi [options] Options of acpi CommandThe following are the options of acpi command:OptionDescription-b, --batteryDisplay battery information including status, charge, and capacity.-t, --thermalShow thermal information such as CPU temperature and cooling device status.-f, --fanView fan information like speed and status.-c, --ac-adapterCheck AC adapter status and power supply details.Usage and Examples of acpi CommandThe following are the examples of acpi command explaining with its usage:1. -b, --battery optionThe following is used for displaying the battery information including status, charge, and capacity.acpi -b2. -a | --ac-adapterIt is used to displays the ac adapter information, the command looks as follows:acpi -a3. -t | --thermalThis option is used for displaying the thermal information, the command looks as follows:acpi -t4. -c | --coolingIt is used for displaying the cooling device information. The command looks as follows:acpi -c5. -V | --everythingIt is used to show every device, overrides above options. The command looks as follows:acpi -v6. -s | --show-emptyIt displays the non-operational devices. For implementing use the following command:acpi -s 7. -i | --details It is used in displaying the additional details if available. The command looks as follows:8. -f | --fahrenheitIt is used as fahrenheit as the temperature unit instead of default celsius. For implementing the command looks as follows: acpi -f 9. -k | --kelvinIt is used as kelvin as the temperature unit instead of default celsius. The command looks as follows: acpi -k10. -h | --helpIt is used for displaying the helpful information as guide of command, The command looks as follows:acpi --help11. -v | --version It is used in shows the output version of acpi information:acpi -versionDifference between acpi, acpi-listen and acpi_call CommandsThe following are the difference between acpi, acpi_listen and acpi_call Commands:Featureacpi Commandacpi_listen Commandacpi_call CommandPurposeIt used for displaying the ACPI information like battery status, thermal data, etc.It is used for listening the ACPI events and displays corresponding information.It executes ACPI methods from userspace for advanced system control.InformationIt providess Static ACPI dataIt provides Real-time ACPI event monitoringIt provides the dynamic ACPI method execution for system configuration tasksOutputIt helps in showing the current system hardware state and configurations.It shows the events that are triggered by acpi. It is useful for scripting and debugging.It executes the specific acpi methods providing direct control of system.UsageMonitoring system health and hardware statusReal-time debugging of ACPI eventsAdvanced system configuration and power management tasksFeatures of ACPI CommandThe following are the features of acpi command:Hardware Monitoring: It provides the detailed information regarding the hardware components such as battery status, CPU temperatures, fan speeds, and power consumption, providing the support in system health monitoring.System Health Assessment: It facilitates the users to assess overall system health by displaying critical ACPI data, including thermal conditions and power supply details.Diagnostic Tool: It act as a diagnostic tool for troubleshooting hardware-related issues and optimizing power management strategies based on real-time data.Scripting Support: It facilitates with scripting and automation by retrieving ACPI information that can be used for scripting solutions and monitoring scripts. 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