Run multiple Grails versions concurrently

.bash_profile

alias g2='GRAILS_HOME=~/grails-2.0.0 ~/grails-2.0.0/bin/grails'
alias g204='GRAILS_HOME=~/grails-2.0.4 ~/grails-2.0.4/bin/grails'

alias g21='GRAILS_HOME=~/grails-2.1.0 ~/grails-2.1.0/bin/grails'

alias g137='GRAILS_HOME=~/grails-1.3.7 ~/grails-1.3.7/bin/grails'
alias g136='GRAILS_HOME=~/grails-1.3.6 ~/grails-1.3.6/bin/grails'
alias g135='GRAILS_HOME=~/grails-1.3.5 ~/grails-1.3.5/bin/grails'
alias g134='GRAILS_HOME=~/grails-1.3.4 ~/grails-1.3.4/bin/grails'
alias g133='GRAILS_HOME=~/grails-1.3.3 ~/grails-1.3.3/bin/grails'

alias g125='GRAILS_HOME=~/grails-1.2.5 ~/grails-1.2.5/bin/grails'
alias g124='GRAILS_HOME=~/grails-1.2.4 ~/grails-1.2.4/bin/grails'
alias g123='GRAILS_HOME=~/grails-1.2.3 ~/grails-1.2.3/bin/grails'
alias g122='GRAILS_HOME=~/grails-1.2.2 ~/grails-1.2.2/bin/grails'
alias g121='GRAILS_HOME=~/grails-1.2.1 ~/grails-1.2.1/bin/grails'

alias g112='GRAILS_HOME=~/grails-1.1.2 ~/grails-1.1.2/bin/grails'
alias g111='GRAILS_HOME=~/grails-1.1.1 ~/grails-1.1.1/bin/grails'