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Lars Wirzenius 2012-06-04 errno 1 errno look up errno names and descriptions errno name-or-code errno looks up errno macro names, errno codes, and the corresponding descriptions. For example, if given ENOENT on a Linux system, it prints out the code 2 and the description "No such file or directory". If given the code 2, it printes ENOENT and the same description. Lars Wirzenius errno3