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Dynamic Wireless Network Name (SSID) on Raspberry Pi hotspot

This mostly for any Linux system using systemd, albeit the make_ssid.sh script will need adjusted for where you want to get the ID from. In the example, it uses the Raspberry Pi’s serial number. Mac address could be another good source to use.

make_ssid.sh goes in /etc/hostapd/
The service file goes in /etc/systemd/system/
view raw README hosted with ❤ by GitHub
[Unit]
Description=Setup ssid to use for hostapd
Before=hostapd.service
[Service]
Type=oneshot
ExecStart=/bin/bash /etc/hostapd/make_ssid.sh
StandardOutput=journal+console
[Install]
WantedBy=multi-user.target
view raw hostapd_set_ssid.service hosted with ❤ by GitHub
#!/bin/bash
set -e
egrep -v "^ssid" /etc/hostapd/hostapd.conf > /tmp/hostapd.new
grep Serial /proc/cpuinfo | awk '{ print "ssid=example_ssid_" $3 }' >> /tmp/hostapd.new
mv /tmp/hostapd.new /etc/hostapd/hostapd.conf
view raw make_ssid.sh hosted with ❤ by GitHub