headless configuration for raspberry pi

headlessPi.sh

#!/bin/bash

PI_BOOT="YOUR PI BOOT PARTITION (check with 'lsblk')"
TARGET_DIR="YOUR TARGET DIR FOR MOUNTING PI BOOT PARTITION (usually '/media/YOUR_DIR')"

#create dir and mounting device
create_mount(){
    [ ! -b $PI_BOOT ] && echo "$PI_BOOT does not exist." && exit || \
        [ -b $PI_BOOT ] && [ ! -d $TARGET_DIR ] && \
        sudo mkdir -pv $TARGET_DIR || [ -d $TARGET_DIR ] && \
        sudo mount -v $PI_BOOT $TARGET_DIR
}

#create file for headless configuration
headless_conf(){
    read -p "username= " USR && read -sp "passwd= " USR_PASSWD && echo && \
        ENCRYPT_PASS=$(echo $USR_PASSWD | openssl passwd -6 -stdin) && \
        read -p "wifi_name= " SSID && read -sp "passwd= " SSID_PASSWD && \
        echo && sudo touch $TARGET_DIR/ssh && \
        echo "$USR:$ENCRYPT_PASS" | sudo tee $TARGET_DIR/userconf.txt 1>/dev/null && \
        echo "ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1
country=ID

network={
    scan_ssid=1
    ssid="\"$SSID\""
    psk="\"$SSID_PASSWD\""
    proto=RSN
    key_mgmt=WPA-PSK
    pairwise=CCMP
    auth_alg=OPEN
}" | sudo tee $TARGET_DIR/wpa_supplicant.conf 1>/dev/null || echo "Failed."
}

#run the script
create_mount && echo "Start Configuration..." && headless_conf