| .. 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. |
