docs/source/reference/minio-cli/minio-mc/mc-cat.rst

mc cat

minio

Table of Contents

mc cat

Description

The 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 STDOUT. ~mc cat has similar functionality to cat.

Common Operations

View an S3 Object

Use mc cat to return the object:

mc cat ALIAS/PATH

• Replace ALIAS <mc cat SOURCE> with the alias <mc alias> of the S3-compatible host.
• Replace PATH <mc cat SOURCE> with the path to the object on the S3-compatible host.

View an S3 Object at a Point-In-Time

Use mc cat rewind to return the object at a specific point-in-time in the past:

mc cat ALIAS/PATH --rewind DURATION

• Replace ALIAS <mc cat SOURCE> with the alias <mc alias> of the S3-compatible host.
• Replace PATH <mc cat SOURCE> with the path to the object on the S3-compatible host.
• Replace DURATION <mc cat rewind> with the point-in-time in the past at which the command returns the object. For example, specify 30d to return the version of the object 30 days prior to the current date.

View an S3 Object with Specific Version

Use mc cat version-id to return a specific version of the object:

mc cat ALIAS/PATH --version-id VERSION

• Replace ALIAS <mc cat SOURCE> with the alias <mc alias> of the S3-compatible host.
• Replace PATH <mc cat SOURCE> with the path to the object on the S3-compatible host.
• Replace VERSION <mc cat version-id> with the specific version of the object to return.

Syntax

~mc cat has the following syntax:

mc cat [FLAGS] SOURCE [SOURCE ...]

~mc cat supports requires following arguments:

SOURCE

REQUIRED

The object to concatenate.

For objects on S3-compatible hosts, specify the path to the object as ALIAS/PATH, where:

• ALIAS is the alias <mc alias> of a configured S3-compatible host, and
• PATH is the path to the object.

mc cat play/mybucket/object.txt

For files on a filesystem, specify the full filesystem path to the file as SOURCE:

mc cat ~/data/object.txt

rewind

version-id, vid

encrypt-key

Encrypt or decrypt objects using server-side encryption with client-specified keys. Specify key-value pairs as KEY=VALUE.

• Each KEY represents a bucket or object.

• Each VALUE represents the data key to use for encrypting

  object(s).

Enclose the entire list of key-value pairs passed to ~mc cat encrypt-key in double quotes ".

~mc cat encrypt-key can use the MC_ENCRYPT_KEY environment variable for retrieving a list of encryption key-value pairs as an alternative to specifying them on the command line.