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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.



concatenate files and print on the standard output

cat command examples - Enlinux
cat command example – Enlinux


cat [OPTION]… [FILE]…


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


-A, --show-all

equivalent to -vET

-b, --number-nonblank

number nonempty output lines, overrides -n


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


equivalent to -vT

-T, --show-tabs

display TAB characters as ^I



-v, --show-nonprinting

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


display this help and exit


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.

Updated on September 6, 2021

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