petits-scripts-persos/wifi_chooser

#!/bin/sh
# choose a wifi signal in range and try to connect to it

verb=0

title="Wifi Selector"
id=""
notify () {
	if [ -z "$id" ] ; then
		id="$(dunstify -p "$title" "$@")"
	else
		dunstify -r "$id" "$title" "$@"
	fi
}

if ( nmcli radio wifi | grep disabled > /dev/null ) ; then
 	notify "Turning on"
 	nmcli radio wifi on 
 	sleep 1
fi

notify "Scanning networks in range..."
nmcli device wifi rescan

ssid="$(nmcli -f IN-USE,SSID,BARS d wifi list | dmenu -l 8)" 
ssid="$(echo "${ssid:2:-5}" | sed 's/^ *//g' | sed 's/ *$//g')"

# We get a clean version of SSIDs. It is a fix to connect to wifis that begin or end with spaces
ssid="$(nmcli -f SSID -m multiline -t -c no d wifi list | grep -F "$ssid")"
ssid="${ssid:5}"

[ $verb -gt 0 ] && echo "ssid: $ssid"
[ -z "$ssid" ] && notify "No SSID selected" && exit 1

notify "Connecting to $ssid"
out="$(nmcli d wifi connect "$ssid" 2>&1 | grep -i error)"
res="$?"
[ -z "$out" ] && notify "Connected :)" || notify "Error connecting :(\n$out"