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Tweak Network Key docs (#15532)

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- LC_ALL is [stronger than LC_CTYPE](https://stackoverflow.com/questions/30479607/explain-the-effects-of-export-lang-lc-ctype-and-lc-all) so just use LC_ALL.
- There's no harm in specifying LC_ALL on Linux, so there's no need to repeat this per-platform.
- Demote the note explaining you can run this on HomeAssistant OS.
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Adam Ernst 2020-11-04 03:58:56 -06:00 committed by GitHub
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@ -42,25 +42,14 @@ Each individual value in the defined key can be anywhere from 0x00 to 0xFF. Defi
### Network Key
An easy Linux script to generate a random key:
(remember you can run this in Home Assistant OS or Supervised, you can use the Terminal Add-on)
```bash
cat /dev/urandom | tr -dc '0-9A-F' | fold -w 32 | head -n 1 | sed -e 's/\(..\)/0x\1, /g' -e 's/, $//'
```
On macOS, this script will generate a random key:
```bash
cat /dev/urandom | LC_CTYPE=C tr -dc '0-9A-F' | fold -w 32 | head -n 1 | sed -e 's/\(..\)/0x\1, /g' -e 's/, $//'
```
If the above command doesn't work then replace `LC_CTYPE=C` with `LC_ALL=C`:
Quickly generate a random key by running:
```bash
cat /dev/urandom | LC_ALL=C tr -dc '0-9A-F' | fold -w 32 | head -n 1 | sed -e 's/\(..\)/0x\1, /g' -e 's/, $//'
```
(remember you can run this in Home Assistant OS or Supervised, you can use the Terminal Add-on)
<div class='note warning'>
Ensure you keep a backup of this key. If you have to rebuild your system and don't have a backup of this key, you won't be able to reconnect to any security devices. This may mean you have to do a factory reset on those devices, and your controller, before rebuilding your Z-Wave network.
</div>