将图片文件转为list文件：convert_images_to_list.sh

#!/bin/bash

# convert the images folder to the test.list and train.list file according to
#   the distribution, command will clear the train.list and test.list files first
#将图片文件夹转为test.list和train.list文件
#   Args:
#       path: the path to the video folder  路径：视频文件夹的路径
#       factor: denominator that split the train and test data. if the number 
#               is 4, then 1/4 of the data will be written to test.list and the
#               rest of the data will be written to train.list
        因素： 区分训练和测试文件数据的分母，如果是4，那么训练集：测试集 = 3：1
#   Usage:
#       ./convert_images_to_list.sh path/to/video 4
#   Example Usage:
#       ./convert_images_to_list.sh ~/document/videofile 4
#   Example Output(train.list and test.list):
#       /Volumes/passport/datasets/action_kth/origin_images/boxing/person01_boxing_d1_uncomp 0
#       /Volumes/passport/datasets/action_kth/origin_images/boxing/person01_boxing_d2_uncomp 0
#       ...
#       /Volumes/passport/datasets/action_kth/origin_images/handclapping/person01_handclapping_d1_uncomp 1
#       /Volumes/passport/datasets/action_kth/origin_images/handclapping/person01_handclapping_d2_uncomp 1
#       ...

> train.list
> test.list
COUNT=-1
for folder in $1/*               #将文件夹名循环出来
do
    COUNT=$[$COUNT + 1]
    for imagesFolder in "$folder"/*
    do
        if (( $(jot -r 1 1 $2)  > 1 )); then
            echo "$imagesFolder" $COUNT >> train.list
        else
            echo "$imagesFolder" $COUNT >> test.list
        fi        
    done
done