72 lines
1.6 KiB
Markdown
72 lines
1.6 KiB
Markdown
---
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title: "wpa_supplicant"
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tags: [ "Documentation", "Networking" ]
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---
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wpa_supplicant configurations are stored in /etc/wpa_supplicant/wpa_supplicant-wlan0 (or equivalent).
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# Generating Keys Manually
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> wpa_passphrase [ssid] [password]
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For example:
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> wpa_passphrase 'Cafe Kosachok' 'Kosachok2019'
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This then spills the relevant psk and such to be entered into the wpa_supplicant configuration file.
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If you encounter problems, you will probably need to delete the old device pid in (e.g.) /run/wlan0/
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Next up, start wpa_supplicant:
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> wpa_supplicant -B -iwlan0 -c /etc/wpa_supplicant/wpa_supplicant-wlan0
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The -B flag runs this as a background process. Remove this to see real-time output in order to solve problems. The -i flag denotes the physical device used for the wifi. The -c flag points to the configuration file for use.
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## Automatic WiFi Connection
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> wpa_cli
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This has a number of commands to input. In order:
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> scan
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> scan_results
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> add_network
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This outputs a network number, e.g. '3'. This is the new network you'll work with.
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> set_network 3 ssid "Kosachok Cafe"
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> set_network 3 psk "Kosachok2019"
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OR (for no password)
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> set_network 3 key_mgmt NONE
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> enable_network 3
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> save_config
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...and for the impatient:
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> sudo sv restart wpa_supplicant
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## Scripts
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You can script like this:
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> wpa_cli add_network
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That returns an ID, so you can say:
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> newNetwork="$(wpa_cli add_network)"
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Then `$newNetwork` would equal that number, and you can add/ remove networks with scripts.
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But remember to escape the quotes, so adding a network would be:
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> wpa_cli set_network 3 psk \""passphrase"\"
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