Calculate MD5 in Ubuntu

From: http://yaodh.blog.51cto.com/1462667/329748

Md5sum is installed in Ubuntu by default.

Usage: md5sum file name

Usage: md5sum [Option]... [file]...

Displays or checks the MD5 (128-bit) checksum.

If there is no file option, or the file is "-", it is read from the standard input.

-B, -- binary reads data in binary mode

-C, -- check read MD5 sums from the files and check them

-T, -- text read in text mode (default)

The following three options are useful only when verifying checksums:

-- Quiet don't print OK for each successfully verified File

-- Status don't output anything, status code shows success

-W, -- Warn warn about improperly formatted checksum lines

-- Help: displays the help information and exits.

-- Version: Output version information and exit

The sums are computed as described in RFC 1321. When checking, the input

Shocould be a former output of this program. The default mode is to print

A line with checksum, a character indicating type ('*' for binary,''

Text), and name for each file.

Please report md5sum errors to bug-coreutils@gnu.org

GNU coreutils home page:

General help using GNU software:

Report md5sum translation bugs to