cat – concatenate files and print on the standard output

cat [OPTION] [FILE]…

Concatenate FILE(s), or standard input, to standard output.


equivalent to -vET
number nonblank output lines
equivalent to -vE
display $ at end of each line
number all output lines
never more than one single blank line
equivalent to -vT
display TAB characters as ^I
use ^ and M- notation, except for LFD and TAB
display this help and exit
output version information and exit

With no FILE, or when FILE is -, read standard input.