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So open it in an editor?

Yes, or view via `less` or a hexdumper.

But how many sysadmins do you know rely on `cat` for their day-to-day use? Too many, I reckon.

`cat` abuse is rampant

Add "alias cat='cat -v'" to your login profile then.

You should be cautious about running less on untrusted input: http://seclists.org/fulldisclosure/2014/Nov/74