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11da3403e9
For nearly all commands in U-Boot the '?' variable is handled the same way with 0 meaning success, 1 meaning any failure. Explain this in the general rules section of the cmdline documentation (with a link to a counter example) and then remove the redundant wording from most commands. We retain a section about the return value in a number of places where we are doing something such as always returning a specific value or we have useful additional information to go along with the normal return codes. Signed-off-by: Tom Rini <trini@konsulko.com> Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
48 lines
620 B
ReStructuredText
48 lines
620 B
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0+:
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.. index::
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single: cat (command)
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cat command
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===========
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Synopsis
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--------
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::
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cat <interface> <dev[:part]> <file>
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Description
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-----------
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The cat command prints the file content to standard out.
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interface
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interface for accessing the block device (mmc, sata, scsi, usb, ....)
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dev
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device number
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part
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partition number, defaults to 1
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file
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path to file
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Example
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-------
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Here is the output for a example text file:
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::
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=> cat mmc 0:1 hello
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hello world
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=>
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Configuration
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-------------
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The cat command is only available if CONFIG_CMD_CAT=y.
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