解决方案链接http://tutsnare.com/laravel-command-not-found-ubuntu-mac/

在终端

# download installer
composer global require "laravel/installer=~1.1"
#setting up path
export PATH="~/.composer/vendor/bin:$PATH" 
# check laravel command
laravel 

# download installer
composer global require "laravel/installer=~1.1"

nano ~/.bashrc

#add

alias laravel='~/.composer/vendor/bin/laravel'

source ~/.bashrc

laravel

# going to html dir to create project there
cd /var/www/html/
# install project in blog dir.
laravel new blog

终端类型:

 composer global require "laravel/installer"

当作曲家完成时，输入:

vi ~/.bashrc

粘贴并保存:

export PATH="~/.config/composer/vendor/bin:$PATH"

终端类型:

source ~/.bashrc

打开另一个终端窗口，输入:laravel

好吧，我这么做了，效果很好:

nano ~/.bash_profile 

粘贴

export PATH=~/.composer/vendor/bin:$PATH

做源~/。Bash_profile和enjoy;)

重要提示:如果你想知道bash_profile和bashrc的区别，请点击这个链接

注意:对于运行laravel 5.1的Ubuntu 16.04，路径为:~/.config/composer/vendor/bin

在其他平台上:要查看Composer全局目录的位置，请运行Composer global about。将/vendor/bin添加到“Changed current directory to…”之后列出的目录中，以获得应该添加到path中的路径。

终端类型:

nano ~/.bash_profile 

然后粘贴:

export PATH="/Users/yourusername/.composer/vendor/bin:$PATH"

然后保存(按ctrl+c，按Y，按enter)

现在，您可以在终端上使用“laravel”了

如果你已经全局安装了Composer，你可以使用下面的命令安装Laravel安装工具:

composer global require "laravel/installer=~1.1"

使用MacBook时，请参考下面的代码片段;

zsh:

echo 'export PATH="$HOME/.composer/vendor/bin:$PATH"' >>  ~/.zshrc
source ~/.zshrc

Bash的:

echo 'export PATH="$HOME/.composer/vendor/bin:$PATH"' >> ~/.bashrc
source ~/.bashrc