My_home_scripts/,backup_wallpaper.sh

#!/bin/bash
# Coding: utf-8
# Editor: www.geany.org
# Created 2018-04-30

#_sudo_apt_install_ steghide zenity

source $HOME/.SCR/lib.sh

echo "1 arg - pic_fullpath"
echo "2 arg - date_fullpath"

if (( "$#" < 2))
then    
    pic_fullpath=`zenity --file-selection --title="Select pic_fullpath"`
    fun_echo_variable pic_fullpath
    date_fullpath=`zenity --file-selection --title="Select date_fullpath"`
    fun_echo_variable date_fullpath
else
    pic_fullpath="$1"
    date_fullpath="$2"        
fi

dir_wp="$HOME/DATA2/Wallpapers/android"
read hash_bw < "$HOME/.ssh/hash_bw"

read -s -p "Enter password:" pass
hash="$(echo "$pass" | sha256sum | cut -c -8)"

if [ "$hash" == "$hash_bw" ]
then
    fun_create_directory "$dir_wp"

    cd "$dir_wp"
    new_pic_filename="$(basename "$pic_fullpath")"

    fun_echo_variable dir_wp hash_bw hash pic_fullpath date_fullpath new_pic_filename

    rm -rf "$dir_wp/$new_pic_filename"
    steghide embed -ef "$date_fullpath" -p "$pass" -cf "$pic_fullpath" -sf "$new_pic_filename"

    if [ "$?" -eq "0" ] # если кода возврата 0
    then
        date_pic_file="$(stat "$new_pic_filename" | grep "Modify" | cut -f2-4 -d" ")"

        find . -exec touch -a --date="$date_pic_file" {} \;
        find . -exec touch -m --date="$date_pic_file" {} \;
    fi

    fun_for_continue_enter_password

    touch "/tmp/backup_wallpaper_0"
else
    echo "$hash_bw not correct"
fi