Run a shell with environment variables set.

withenv

#!/bin/bash

display_usage() { 
	echo -e "\nUsage: $0 [command] \n" 
	echo -e "Execute the specified command with environment variables set." 
	echo -e "If no command is specified then execute a new shell.\n"
} 

if [[ ( $1 == "--help") ||  $1 == "-h" ]]; then 
    display_usage
    exit 0
fi 

# Get path to this script
root=$( cd -P "$( dirname "${BASH_SOURCE[0]}" )" && pwd)

# Set the environment
if [ -e $root/env ]; then
    source $root/env;
fi

# Start a new shell (with the environment).
# Pass any arguments to the shell. If no arguments are supplied then start an
# interactive shell (using -i)
if [ $# -eq 0 ] ; then 
    echo "Starting interactive shell with new environment."
    echo "Type exit or Control-D to return to the previous shell."
    exec $SHELL -i
else
    exec $@
fi