iwconfer.sh

#!/usr/bin/bash

# my preferred options
params=("bt_coex_active=" "11n_disable=" "swcrypto=" "power_save=" "power_scheme=" "d0i3_disable=" "uapsd_disable=")
options=("0" "8" "1" "0" "1" "1" "1")

# check if running as root
if [[ $(/usr/bin/id -u) -ne 0 ]]; then
    echo "Please run with root privileges!"
    exit
fi


# location of the conf file.
FILE=/etc/modprobe.d/iwlwifi.conf

# argument options
OPTSTRING=":dc"

# find pre-existing config and create a backup in home directory
if [ -f "$FILE" ]; then
    echo "$FILE exists, Creating backup in dir; ~/iwlwifi-config"
    mkdir -p ~/iwlwifi-config
    cp $FILE ~/iwlwifi-config/iwlwifi.conf.bak
    echo "  Backup created!"
else 
    echo "$FILE does not exist, continuing..."
fi

# functions - - - 

# change the file to the new options
write_ops(){
    echo "To undo any changes you may either delete the file $FILE or restore the backup file located in ~/iwlwifi-config/iwlwifi.conf.bak, if it exists!"
    echo "# conf generated by iwlwifi-configurer." > $FILE

    i=0
    printf "\n  Writing...  \n"
    for str in "${params[@]}"
    do
        echo "Setting $str${options[$i]}"
        echo "options iwlwifi $str${options[$i]}" >> $FILE
        i=$((i+1))
    done
    printf "\nDone! \n"
}

# function for users who want to do a custom configuration
set_ops()
{
    printf "\nBe careful with this, if you do not know what you are doing please quit (CTRL-C). This may brick your wifi if misconfigured."
    echo "To undo any changes you may either delete; $FILE or restore the backup located in; ~/iwlwifi-config/iwlwifi.conf.bak, if this was created!"

    i=0

    for str in "${params[@]}"
    do
        read -r -p "Enter your option for $str: " option
        options[$i]=$option
        i=$((i+1))
    done
    echo "Writing with custom configuration..."
    write_ops
}

# functions - - - 


# Default to -d if no argument provided
if [ $# -eq 0 ]; then
  set -- -d
fi

# get args
while getopts ${OPTSTRING} opt; do
  case ${opt} in
    d)
      echo "Default configuration will be used."
      write_ops
      ;;
    c)
      echo "Custom configuration will be used."
      set_ops
      ;;
    ?)
      echo "Invalid -${OPTARG}, please use -d for default or -c for custom configuration."
      exit 1
      ;;
  esac
done