dockctl

#!/usr/bin/env bash
# This is a shell script to automate "docking" and "undocking" Linux laptop
# Written and tested on Fedora 28

# Assign help text to variable for user later
HELP="Usage: dockctl [ dock | undock ]"

# Ensure that only a single parameter was passed
# Display help text if more than 1 parameter was supplied
if [ "$#" -ne 1 ]; then
    echo "Error: Incorrect number of parameters; please supply only a single subcommand"
    echo $HELP
    exit 1
fi

# Check for existence of and get path for wifictl if present
if hash wifictl 2>/dev/null; then
    WIFICMD="$(command -v wifictl)"
else
    echo "wifictl is required but not found, aborting"
    exit 1
fi

# Check for existence of and get path for synclient if present
if hash synclient 2>/dev/null; then
    SYNCMD="$(command -v synclient)"
else
    echo "synclient is required but not found, aborting"
    exit 1
fi

# Take action based on subcommand provided by the user
case "$1" in
    dock)
        # Turn Wi-Fi interface off using wifictl
        $WIFICMD off
        # Start Synergy client
        $SYNCMD start > /dev/null 2>&1
        ;;
    undock)
        # Turn Wi-Fi interface off
        $WIFICMD on
        # Stop Synergy client
        $SYNCMD stop > /dev/null 2>&1
        ;;
    help)
        echo $HELP
        exit 0
        ;;
    --help)
        echo $HELP
        exit 0
        ;;
    *)
        # Present an error about an unsupported subcommand
        echo "Unknown subcommand provided"
        echo $HELP
        exit 1
        ;;
esac