blob: 631b827cc439484f900c8bba3de216d9d4a13ef2 (
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#!/bin/bash
validre='^(-10|[0-9]+([.][0-9]+)?)$'
gain=$(echo $1 | tr -cd '[:digit:].-')
if ! [[ $gain =~ $validre ]] ; then echo "Error, invalid gain!"; exit 1; fi
if ! grep gain /etc/default/readsb &>/dev/null; then sudo sed -i -e 's/RECEIVER_OPTIONS="/RECEIVER_OPTIONS="--gain 49.6 /' /etc/default/readsb; fi
sudo sed -i -E -e "s/--gain .?[0-9]*.?[0-9]* /--gain $gain /" /etc/default/readsb
sudo systemctl restart readsb
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