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Setting Up the Environment

Before you can run IDL or ENVI on a UNIX platform, you must set up each user's environment on the machine that will be running it. Each user will need to complete the following tasks:

Defining Environment Variables and Aliases

Three setup scripts (idl_setup, idl_setup.ksh, and idl_setup.bash) are provided for IDL, and three scripts (envi_setup, envi_setup.ksh, and envi_setup.bash) are provided for ENVI. These scripts set all required environment variables and aliases for IDL and ENVI. You should modify the .cshrc, .profile, or .bashrc file for each user who will be accessing IDL or ENVI, so that these settings are automatically executed whenever a user logs in.

To modify the .cshrc, .profile, or .bashrc files, complete the following steps:

  1. Modify each user's .cshrc , .profile, or .bashrc file using any plain text editor.

    2.  

    For C shell users, add the following line to your.cshrc files:

    source ITT_DIR/idlxx/bin/idl_setup

     

    Or,

     

    source ITT_DIR/idlxx/products/envixx/bin/envi_setup

     

    For Korn shell users, add the following line to your.profile files:

     

    . ITT_DIR/idlxx/bin/idl_setup.ksh

     

    Or,

     

    . ITT_DIR/idlxx/products/envixx/bin/envi_setup.ksh

     

    For Bash shell users, add the following line to your.bashrc files:

     

    . ITT_DIR/idlxx/bin/idl_setup.bash

     

    Or,

     

    . ITT_DIR/idlxx/products/envixx/bin/envi_setup.bash

     

    where ITT_DIR is the main installation directory and xx is the software version.

     

  2. Log out and log back in to execute the .cshrc, .profile, or .bashrc file, or execute the file from the home directory using one of the following commands:

    3.  

    For C shell: source .cshrc

     

    For Korn shell: . .profile

     

    For Bash shell: . .bashrc

Defining ION Environment Variables and Aliases

If you installed ION during your IDL installation, you will need access to ION Service utilities, as well as IDL-related environment variables and aliases, and you will need to define the ION_DIR environment variable to point to the main ION directory. A script called ion_setup (ion_setup.ksh for Korn shell or ion_setup.bash for Bash shell) is located in the ITT_DIR/idlxx/products/ionxx/bin directory. This script, along with idl_setup and envi_setup, lets you use the ittlicense command to start the license wizard and run the ionman command to launch the IDL Assistant help viewer. To automatically set up your environment upon login, do the following:

  1. Modify your .cshrc, .profile, or .bashrc file using any plain text editor.

    2.  

    For C shell users, add the following line to your .cshrc files:

    source ITT_DIR/idlxx/products/ionxx/bin/ion_setup

     

    For Korn shell users, add the following line to your .profile files:

     

    . ITT_DIR/idlxx/products/ionxx/bin/ion_setup.ksh

     

    For Bash shell users, add the following line to your .bashrc files:

     

    . ITT_DIR/idlxx/products/ionxx/bin/ion_setup.bash

     

    where ITT_DIR is the main installation directory and xx is the software version.

     

  2. Log out and log back in to execute the .cshrc, .profile, or .bashrc file, or execute the file from the home directory using one of the following commands:

    3.  

    For C shell: source .cshrc

     

    For Korn shell: . .profile

     

    For Bash shell: . .bashrc

  IDL Online Help (March 06, 2007)