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linux:udev [2023/12/13 16:20] – niziaklinux:udev [2023/12/13 16:31] (current) – niziak
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 === Testing rules === === Testing rules ===
 <code bash>udevadm test /sys/class/tty/ttyACM0</code> <code bash>udevadm test /sys/class/tty/ttyACM0</code>
 +
 +NOTE: This program is for debugging only, it does not run any program specified by a RUN key. It may show incorrect results, because some values may be different, or not available at a simulation run.
  
 ==== Getting info ==== ==== Getting info ====
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 </file> </file>
  
 +<code bash>
 +udevadm control --log-priority=debug
 +
 +</code>
  
 ==== Rules ==== ==== Rules ====
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 ATTR{device/of_node/symlink}!="", ENV{DEVNAME}!="", SYMLINK+="%s{device/of_node/symlink}" ATTR{device/of_node/symlink}!="", ENV{DEVNAME}!="", SYMLINK+="%s{device/of_node/symlink}"
 </code> </code>
 +
 +See:
 +  - [[https://github.com/mvduin/py-uio/blob/master/dts/pwmss2.dtsi#L122|pwmss2.dtsi]]
 +  - [[https://github.com/mvduin/py-uio/blob/master/etc/udev/rules.d/10-of-symlink.rules|10-of-symlink.rules]]
 +  - [[https://github.com/mvduin/py-uio/blob/master/dts/pwmss2.dtsi|pwmss2.dtsi]]
  
 === Triggering systemd === === Triggering systemd ===