My_home_scripts/,find_files.sh

#!/bin/bash
# Coding: utf-8
# Editor: www.geany.org
# Created 2017-07-05

source $HOME/.SCR/lib.sh

if [ $# == "0" ];
then
    fun_echo_color 11 0 ' Example: ,find_files.sh aptik 11 33 55 '
    fun_echo_color 11 0 ' Example: ,find_files.sh variant1 aptik 11 33 55 '
    exit 0
fi

case "$1" in

"variant1"  )   ChoiceNamber="1"; var1="$2"; var2="$3"; var3="$4" ;;
"variant2"  )   ChoiceNamber="2"; var1="$2"; var2="$3"; var3="$4" ;;
"variant3"  )   ChoiceNamber="3"; var1="$2"; var2="$3"; var3="$4" ;;
"variant4"  )   ChoiceNamber="4"; var1="$2"; var2="$3"; var3="$4" ;;
"variant5"  )   ChoiceNamber="5"; var1="$2"; var2="$3"; var3="$4" ;;
"variant6"  )   ChoiceNamber="6"; var1="$2"; var2="$3"; var3="$4" ;;

*   )
    echo ""
    fun_echo_color 10 0 "Select folder for search files:"
    echo ""
    echo "[1] /"
    echo "[2] /media"
    echo "[3] $HOME"
    echo "[4] $HOME/DATA1"
    echo "[5] $HOME/DATA2"
    echo "[6] $HOME/DATA2/Media2"

    read ChoiceNamber

    var1="$1"; var2="$2"; var3="$3"
esac

case "$ChoiceNamber" in

"1" )   folder="/"                      ;;
"2" )   folder="/media"                 ;;
"3" )   folder="$HOME"                  ;;
"4" )   folder="/media/a/DATA1"         ;;
"5" )   folder="/media/a/DATA2"         ;;
"6" )   folder="/media/a/DATA2/Media2"   ;;
*   )   echo "You have selected item ${ChoiceNamber}. This item does not exist"
        exit 0  ;;

esac

fun_find ()
{
    find $folder -iname "*$1*" 2>/dev/null | sort
}

if [ -n "$var1" ];
then
    fun_find "$var1"
fi

if [ -n "$var2" ];
then
    fun_find "$var1" | egrep "$var2"
fi

if [ -n "$var3" ];
then
    fun_find "$var1" | egrep "$var2" | egrep "$var3"
fi