Optical dump file – od

[problem]

Whenever you cat a file, it shows nothing!

Or it destroys your terminal. 🙂

… or when you diff to files – the look identical – but it reports them as not.

[/problem]

[solution]

You probably have control characters in the file, or no newline at the end of the file.

The example shows how to run an optical dump on a file.

[/solution]

[example]

# optical dump of a file, useful for seeing control chars, etc and lines with no newline.

od -c filename

[/example]

[reference]

[tags]Optical dump, od, Unix Coding School[/tags]

[/reference]

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