I tried to install laravel Framework in my mac OSX 10 .And I ended modifying my ~/.bash_profile to add the laravel command. laravel command seems to work normally .But another problem came out . ls ,sudo ...and other shell commands does not work .
-bash: ls: command not found
My bash.profile file contains the two links
export PATH="/Applications/MAMP/bin/php/php5.6/bin"
export PATH="$PATH:$HOME/.composer/vendor/bin"