TLDR
Enter a command. For example: git reflog, symfony, git archive file.

file

 
Determine file type. More information: https://manned.org/file.
 
  • Give a description of the type of the specified file. Works fine for files with no file extension:
     
    file {{filename}}
     
  • Look inside a zipped file and determine the file type(s) inside:
     
    file -z {{foo.zip}}
     
  • Allow file to work with special or device files:
     
    file -s {{filename}}
     
  • Don't stop at first file type match; keep going until the end of the file:
     
    file -k {{filename}}
     
  • Determine the mime encoding type of a file:
     
    file -i {{filename}}

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