Note: Official installation guide could be found here.

Contents

• 1. Unzip installation file
• 2. Set Unix environment variables
• 3. Check installation

1. Unzip installation file

1. Find the M*.tbz file and double-click, the g16 folder would be generated at current dictionary after finishing the decompressing.
2. Create a Scratch folder in the g16 folder.
3. Move g16 folder to the /Application.

2. Set Unix environment variables

1. Open Terminal.
2. Run echo $SHELL command, if /bin/bash is displayed in the command windows, you are running bash shell, if /bin/tcsh is displayed, you are running tcsh shell.
3. If the current shell is not bash or tcsh, run chsh -s /bin/bash, and refer to the following section 2.1.

2.1 If you are running bash shell

1. Run following command:

   cd
   touch .bash_profile
   ln -s .bash_profile my_profile
   

2. Go to /Users/your_user_name in Finder, and double-click the my_profile file (open it in TextEdit). Add following contents to the my_profile file:

   export g16root=/Applications
   . $g16root/g16/bsd/g16.profile
   export GAUSS_SCRDIR=/Applications/g16/Scratch
   

2.2 If you are running tcsh shell

1. Run following command:

   cd
   touch .login
   ln -s .login my_login
   

2. Go to /Users/your_user_name in Finder, and double-click the my_login file (open it in TextEdit). Add following contents to the my_login file:

   setenv g16root /Applications
   source $g16root/g16/bsd/g16.login
   setenv GAUSS_SCRDIR /Applications/g16/Scratch
   

3. Check installation

Run g16 in Terminal, if Entering Gaussian System, Link 0=g16 is displayed in current windows, the Gaussian 16 is successfully installed on your computer.