Linux: What is the encoding of this shell script?

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http://stackoverflow.com – I'm trying to determine the encoding of a shell script. The following "file" command returns "application/x-shellscript". Is this the actual encoding? I was expecting a standard encoding such as "utf-8" or "ascii". What am I missing? file --mime test.sh test.sh: application/x-shellscript EDIT: I moved the file over to my macbook and it worked: file --mime test.sh test.sh: text/x-shellscript; charset=us-ascii (HowTos)