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[text] How to use environment variable in a C program Asked 7 years 4 months ago Modified 1year 9 months ago Viewed 54k times 23 J 0 I need to know a way for use environment variables in the C programming language. How can use and read them For example read an environment variable or take the value of an environment variable and load it in another variable. variables path environment Share Improve this question Follow edited Jun 2 2017 at 2006 asked Aug 9 2015 at 1610 Peter Mortensen Alex 30.7k 21 104 125 289 01 02 o5 Im voting to close this question as offtopic because Googling exact title gives About 15600000 results Martin James Aug 9 2015 at 1623 and now this is among them. man7.orglinuxmanpagesman3getenv.3.html erik258 Dec 30 2017 at 531 and not only that this is 1 in the list Seamus May 21 at 1231