Table of Contents
mc cat command concatenates the contents of a file or
object to another file or object. You can also use the command to
display the contents of the specified file or object to
cat has similar functionality to
The following command concatenates the contents of an object on a
MinIO deployment to
mc cat play/mybucket/myobject.txt
mc cat command has the following syntax:
mc [GLOBALFLAGS] cat \ [--rewind] \ [--version-id] \ [--encrypt-key] \ ALIAS [ALIAS ...]
 indicate optional parameters.
Parameters sharing a line are mutually dependent.
Parameters seperated using the pipe
| operator are mutually exclusive.
Copy the example to a text editor and modify as-needed before running the command in the terminal/shell.
You can also use
mc cat against a local filesystem to produce similar
results to the
cat commandline tool:
Required The alias of a MinIO deployment and the full path to the object. For example:
mc cat myminio/mybucket/myobject.txt
You can specify multiple objects on the same or different MinIO deployment. For example:
mc cat myminio/mybucket/object.txt myminio/myotherbucket/object.txt
For an object on a local filesystem, specify the full path to that object. For example:
mc cat ~/data/object.txt
mc cat to operate only on the object version(s) that
existed at specified point-in-time.
To rewind to a specific date in the past, specify the date as an
ISO8601-formatted timestamp. For example:
To rewind a duration in time, specify the duration as a string in
#d#hh#mm#ss format. For example:
mc cat to operate only on the specified object version.
Encrypt or decrypt objects using server-side encryption with
client-specified keys. Specify key-value pairs as
KEY represents a bucket or object.
VALUErepresents the data key to use for encrypting
Enclose the entire list of key-value pairs passed to
--encrypt-key in double quotes
--encrypt-key can use the
environment variable for retrieving a list of encryption key-value pairs
as an alternative to specifying them on the command line.
The path to a
JSON formatted configuration file that
mc uses for storing data. See Configuration File for
more information on how mc uses the configuration file.
Enables JSON lines formatted output to the console.
mc --JSON COMMAND
Disables TLS/SSL certificate verification. Allows TLS connectivity to servers with invalid certificates. Exercise caution when using this option against untrusted S3 hosts.
Displays the current version of
mc cat to return the object:
mc cat ALIAS/PATH
mc cat --rewind to return the object at a specific
point-in-time in the past:
mc cat ALIAS/PATH --rewind DURATION
PATH with the path to the object on the
DURATION with the point-in-time in the past
at which the command returns the object. For example, specify
return the version of the object 30 days prior to the current date.
mc cat --version-id to return a specific version of the
mc cat ALIAS/PATH --version-id VERSION
The mc commandline tool is built for compatibility with the AWS S3 API and is tested MinIO and AWS S3 for expected functionality and behavior.
MinIO provides no guarantees for other S3-compatible services, as their S3 API implementation is unknown and therefore unsupported. While mc commands may work as documented, any such usage is at your own risk.