Linux filename suffixes

When creating files in Linux (and other OS’s) there’s the usual convention of .txt for text files, .c for C files, etc – you just pick them up as you go along.

But there’s actually a manpage that lists the common conventions – “who knew”?

% man suffixes
SUFFIXES(7)                           Linux Programmer's Manual                           SUFFIXES(7)

       suffixes - list of file suffixes

       It  is  customary to indicate the contents of a file with the file suffix, which consists of a
       period, followed by one or more letters.  Many standard utilities, such as compilers, use this
        .asm         │ (GNU) assembler source file
        .au          │ Audio sound file
        .aux         │ LaTeX auxiliary file

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