(1) (CATegory X) See cable categories.
(2) (conCATenate) A Unix/Linux/Mac OS X command that is used to create a text file, display the contents of a text file or add one file to another (concatenate files). Cat is the Unix counterpart of the Copy Con command in DOS/Windows. Following are some examples. See DOS Copy Con.
cat > newfile create text file
bla bla bla type the text
Control-D press Control-D to exit
cat newfile display file "newfile"
cat f1 f2 > f3 concatenate "f1" and "f2"
creating file "f3"
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