$ sw_vers
ProductName:	Mac OS X
ProductVersion:	10.12.3
BuildVersion:	16D30

$ git --version
git version 2.18.0

$ cat /etc/issue
  Ubuntu 16.04 LTS

# go version
  go version go1.8.4 linux/amd64

$ cat composer.json
    ...
    "require": {
           "php": ">=5.5.9",
           "symfony/symfony": "2.8.*",
           ...
       },
       
$ mysqld -V
 mysqld  Ver 5.7.18 for Linux on x86_64 (MySQL Community Server (GPL))

$ sw_vers 
ProductName:    Mac OS X
ProductVersion: 10.12.6
BuildVersion:   16G29

Chrome
67.0.3396.99（64 bit）

$ cat /etc/issue
Ubuntu 16.04.2 LTS \n \l

$ redis-server --version
Redis server v=3.0.6 sha=00000000:0 malloc=jemalloc-3.6.0 bits=64

$ cat composer.json
"require": {
       "php": ">=5.5.9",
       "symfony/symfony": "2.8.*",
       ...
   },