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cat
Purpose
Copy contents of a file to standard output (the screen).
Syntax
cat [-benstvA] files
Options
-b numbers nonblank lines.-e shows each end-of-line (as $ ) and all nonprinting characters.-n numbers all output lines starting with number 1.-s replaces multiple blank lines with a single blank line.-t shows tabs as ^I .
-v shows nonprinting characters.-A shows all characters (including nonprinting ones).
Description
Typically, cat is used to display the contents of a file or to concatenate several files into a single file. For example, cat file1 file2 file3 >all combines three files into a single file named all .
