Navigating the Android Sysfs
Venture into the depths of Linux sysfs with our expertly crafted guide, tailored for those intrigued by the intricacies of Linux's virtual filesystem. Sysfs serves as a bridge to the kernel, exposing a plethora of information about the system's devices, drivers, and overall state. This guide demystifies sysfs, presenting a curated selection of commands and paths that allow direct interaction with the kernel's components. Discover how to monitor hardware sensors, adjust device functionalities, and obtain real-time system data. Whether you're a seasoned system administrator or a curious Linux user, this guide provides valuable insights into sysfs, empowering you to optimize and troubleshoot your Linux environment effectively.
Sysfs Commands
Dump everything that will trigger the LED, section 1
cat /sys/class/leds/leds-sec1/trigger
Dump temperature for sensors that support this feature
grep . /sys/class/sensors/*/temperature
Dump ID name for all sensors
grep . /sys/class/sensors/*/name
Dump settings for FOTA limits
cat /sys/power/fota_limit
Dump current state values
Dump version of firmware, DHD, NV, and CLM
Dump wifi MAC address
echo $(cat /sys/wifi/mac_addr)
Dump roaming status for wifi (read-only from sysfs)
Set display brightness to darkest
echo 1 > /sys/class/backlight/panel/brightness
Set display brightness max (default)
echo 255 > /sys/class/backlight/panel/brightness
Dump current setting for USB mode
cat /sys/devices/soc0/hw_platform
Dump all kernel drivers supported for device
Print current panel alias
cat /sys/devices/platform/panel_0/modalias