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.. SPDX-License-Identifier: GPL-2.0+:
.. index::
single: cat (command)
cat command
===========
Synopsis
--------
::
cat <interface> <dev[:part]> <file>
Description
-----------
The cat command prints the file content to standard out.
interface
interface for accessing the block device (mmc, sata, scsi, usb, ....)
dev
device number
part
partition number, defaults to 1
file
path to file
Example
-------
Here is the output for a example text file:
::
=> cat mmc 0:1 hello
hello world
=>
Configuration
-------------
The cat command is only available if CONFIG_CMD_CAT=y.
Return value
------------
The return value $? is set to 0 (true) if the file is readable, otherwise it returns a non-zero error code.
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