Use ``wget -qO- https://gist.githubusercontent.com/rahulvigneswaran/5b96cbea442eb087186cc7f128e42edb/raw/6bcfe89c87839f75d1d0399394b46df2f9408b46/ImageNet_LT_dowload_and_extract.sh | bash``

ImageNet_LT_dowload_and_extract.sh

#!/bin/bash
#
# script to download and extract ImageNet dataset
# ILSVRC2012_img_train.tar (about 138 GB)
# ILSVRC2012_img_val.tar (about 6.3 GB)
#
# make sure ILSVRC2012_img_train.tar & ILSVRC2012_img_val.tar in your current directory
#
#  https://github.com/facebook/fb.resnet.torch/blob/master/INSTALL.md
# 
#  train/
#  ├── n01440764
#  │   ├── n01440764_10026.JPEG
#  │   ├── n01440764_10027.JPEG
#  │   ├── ......
#  ├── ......
#  val/
#  ├── n01440764
#  │   ├── ILSVRC2012_val_00000293.JPEG
#  │   ├── ILSVRC2012_val_00002138.JPEG
#  │   ├── ......
#  ├── ......
#
#
# Extract the training data:
#
mkdir ImageNet_LT && cd ImageNet_LT
wget https://image-net.org/data/ILSVRC/2012/ILSVRC2012_img_train.tar
mkdir train && mv ILSVRC2012_img_train.tar train/ && cd train
tar -xvf ILSVRC2012_img_train.tar && rm -f ILSVRC2012_img_train.tar
find . -name "*.tar" | while read NAME ; do mkdir -p "${NAME%.tar}"; tar -xvf "${NAME}" -C "${NAME%.tar}"; rm -f "${NAME}"; done
cd ..
#
# Extract the validation data and move images to subfolders:
#
wget https://image-net.org/data/ILSVRC/2012/ILSVRC2012_img_val.tar
mkdir val && mv ILSVRC2012_img_val.tar val/ && cd val
tar -xvf ILSVRC2012_img_val.tar && rm -f ILSVRC2012_img_val.tar
wget -qO- https://raw.githubusercontent.com/soumith/imagenetloader.torch/master/valprep.sh | bash
#
# Check total files after extract
#
#  $ find train/ -name "*.JPEG" | wc -l
#  1281167
#  $ find val/ -name "*.JPEG" | wc -l
#  50000
#