Downloading CIAO 4.4
The ciao-install script is designed to simplify and automate the installation and upgrade of the CIAO and the Chandra Calibration DataBase (CALDB). ciao-install FTPs the selected files to your computer, verifies them via md5sum, and unpacks them. The script configures CIAO, sets up the command-line ahelp system, and (optionally) runs the CIAO smoke tests.
The ciao-install.README file has detailed information on the script. For a summary of options, run the script with the "--help" option.
Known issues are listed on the Installation & Smoke Tests bug page.
Quick Installation
This method allows ciao-install to determine what platform you are using, then downloads and installs the standard CIAO installation: CIAO tools, ChIPS, Sherpa, the main CALDB tarfile, and the science scripts.
For existing CIAO installations, this method may also be used to download and install software patches, calibration releases, and science script updates.
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Run the script:
unix% bash /<path>/ciao-install
CIAO and the full CALDB require 2.5GB of disk space to download the tarfiles and 7GB to install the software and calibration files. Upgrading an existing CALDB requires about 40% less disk space.
For detailed instructions, refer to the ciao-install thread page. Known issues are listed on the Installation & Smoke Tests bug page.
Manual Installation
If you are having problems using the ciao-install script, refer to the Manually Installing CIAO 4.4 thread. It explains how to retrieve the files with wget and then install CIAO step-by-step.

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