Can someone help me with issue?

when i am trying to run this block

fname = 'glove.6B.%dd.txt'%embedding_dim
import os
datadir_base = os.path.expanduser(os.path.join('~', '.keras'))
if not os.access(datadir_base, os.W_OK):
datadir_base = os.path.join('/tmp', '.keras')
datadir = os.path.join(datadir_base, 'datasets')
glove_name = os.path.join(datadir, fname)
if not os.path.exists(glove_name):
path = 'glove.6B.zip'
path = get_file(path, origin="http://nlp.stanford.edu/data/glove.6B.zip")
!unzip {datadir}/{path}

i am getting this error

'unzip' is not recognized as an internal or external command,
operable program or batch file.