Cat Command Examples and Usages

The cat command examples and usages is a simple reference resource for learning the Linux command line faster. Read more about memory allocation in Linux operating system.

NAME

cat

concatenate files and print on the standard output

SYNOPSIS

cat [OPTION]… [FILE]…

DESCRIPTION

Concatenate FILE(s) to standard output. With no FILE, or when FILE is -, read standard input.

OPTIONS

-A, --show-all

equivalent to -vET

-b, --number-nonblank

number nonempty output lines, overrides -n

-e

equivalent to -vE

-E, --show-ends

display $ at end of each line

-n, --number

number all output lines

-s, --squeeze-blank

suppress repeated empty output lines

-t

equivalent to -vT

-T, --show-tabs

display TAB characters as ^I

-u

(ignored)

-v, --show-nonprinting

use ^ and M- notation, except for LFD and TAB

--help

display this help and exit

--version

output version information and exit

cat Command EXAMPLES

cat f - g

Output f’s contents, then standard input, then g’s contents.

cat Copy standard input to standard output

cat /proc/meminfo

Reading system memory information from /proc/meminfo directory.