wiki-how.md
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@@ -17,4 +17,19 @@ Move a container image using scp
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```
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podman image save 97f3876877e2 -o 97f3876877e2.tgz
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podman load --input 97f3876877e2.tgz
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+```
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+
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+Automatically change power profiles on power supply status
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+----------------------------------------------------------
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+
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+```
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+$ cat /etc/udev/rules.d/61-onbattery.rules
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+# Rule for when switching to battery
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+SUBSYSTEM=="power_supply",ENV{POWER_SUPPLY_ONLINE}=="0",RUN+="/usr/bin/powerprofilesctl set power-saver"
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+
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+$ cat /etc/udev/rules.d/62-onpower.rules
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+# Rule for when switching to power supply
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+SUBSYSTEM=="power_supply",ENV{POWER_SUPPLY_ONLINE}=="1",RUN+="/usr/bin/powerprofilesctl set performance"
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+
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+$ sudo udevadm control --reload-rules && sudo udevadm trigger
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```
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