# Short answer:
# An alternative to sourcing a file with source (e.g.: source ~/.bashrc) 
# is to use the period (e.g.: . ~/.bashrc)

# Note, you might be tempted to make an alias for source like:
#    alias source='source ~/.bashrc' but it's probably better to use 
#     something like alias sourcebash='source ~/.bashrc' to avoid creating
#     problems for yourself.