Make

wifi/Makefile

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+#Settings: net_if.txt wifi_name.txt wpa_supplicant.conf
+
+# 
+#	commands                output                       dependencies
+# 
+
+Settings/net_if.txt:
+	./net_if.sh             Settings/net_if.txt
+
+# Please see Note 0
+Settings/wifi_name.txt:         Settings/net_if.txt
+	./wifi_conf_init.sh     Settings/wpa_supplicant.conf
+	./wifi_core.sh          Settings/wpa_supplicant.conf Settings/net_if.txt
+	./wifi_name.sh          Settings/wifi_name.txt
+
+Settings/wpa_supplicant.conf:   Settings/wifi_name.txt
+	./wifi_conf_finalize.sh Settings/wpa_supplicant.conf Settings/wifi_name.txt
+
+connect:                        Settings/wpa_supplicant.conf Settings/net_if.txt
+	./wifi_core.sh          Settings/wpa_supplicant.conf Settings/net_if.txt
+	./net_ip.sh             Settings/net_if.txt
+
+
+# Note 0:
+# Do not call this target directly as
+# wifi_conf_init.sh generates wpa_supplicant.conf
+# and therefore target wpa_supplicant.conf won't run.

wifi/Settings/net_if.txt

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+

wifi/Settings/wifi_name.txt

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+

wifi/Settings/wpa_supplicant.conf

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+

wifi/net_if.sh

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+#!/bin/bash
+
+main() (
+	# Sorted by likelyhood:
+
+	case 0 in 
+	$(exists /bin/iwconfig)) iwconfig ;;
+	$(exists /bin/iwconfig)) ;;
+	$(exists /bin/iwconfig)) ;;
+	esac
+)
+
+exists() (
+	test -x "${1}" ; echo $?
+)
+
+main;
+
+echo "Choose a network interface: "
+read  REPLY
+echo $REPLY > "${1}"

wifi/net_ip.sh

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+#!/bin/bash
+
+killall dhcpcd
+dhcpcd -4 "${1}"

wifi/wifi_conf_finalize.sh

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+#!/bin/bash
+# for wifi in wifi_names do ;
+
+echo "The following file should ONLY contain ${2}'s password" 
+echo "Press any key to continue..."
+read 
+nano WiFi_password.txt
+
+(wpa_passphrase "$(< ${2})" < WiFi_password.txt) >> "${1}"

wifi/wifi_conf_init.sh

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+#!/bin/bash
+
+echo 'ctrl_interface=/var/run/wpa_supplicant' > "${1}"

wifi/wifi_core.sh

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+#!/bin/bash
+
+killall wpa_supplicant
+wpa_supplicant -B  -c "${1}" -i "$(< ${2})" 

wifi/wifi_name.sh

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+#!/bin/bash
+
+wpa_cli scan
+echo "Scanning..."; sleep 3s
+
+wpa_cli scan_results
+
+echo "Choose a WiFi: "
+read  REPLY
+echo $REPLY > "${1}"