location_aware_commands.bash

# add to .bash_profile or whatever

# convenience function to determine location - uses domain from resolv.conf instead
# of network location (which may not always be set correctly)
function currentloc {
  local location
  local domain=$(cat /etc/resolv.conf | awk '/^domain/ { print $2 }')
  case $domain in
    *.mycompany.com)
      location=work
      ;;
    *)
      location=default
      ;;
  esac
  echo $location
}

# example command overridden to be location-specific
# e.g. if /usr/bin/somecommand takes an option '-f' to specify an alternative
# config file, this function will replace it to automatically specify the correct
# config file for this location, passing through all supplied command line args
# so for the locations defined above you'd have two config files:
#   ~/.somecommand/work/somecommand.conf
#   ~/.somecommand/default/somecommand.conf
function somecommand {
  command somecommand -f ~/.somecommand/$(currentloc)/somecommand.conf $@
}