McIDAS User's Guide
Version 2019.1

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Appendix G

MCPATH

MCPATH is a Unix environment variable that defines directories for McIDAS-X commands to search when they look for data and help files. Commands requiring these files look in each of the directories listed in MCPATH to find them.

MCPATH has a default value that automatically locates the data files that required linking or redirection in previous versions of McIDAS-X. If users elect to set their own MCPATH value, they only need to know the directories where the files reside, not the exact file names.

This section consists of the following discussions:

• MCPATH Format
• Setting MCPATH
• Writing Data
• REDIRECT Precedence
• MCPATH Requirements
• Troubleshooting

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