OS - FUSE (permisions)

#!/bin/bash

# to run please change mode
# chmod +x check_dir.bash

if [ "$#" -ne 1 ]; then
    echo "Illegal number of parameters"
    echo 'Call : ./check_dir.sh mounted_dir'
    exit 1
fi

MOUNT_DIR=$1
cd $MOUNT_DIR

CMD="#### Command : "

test1(){
    echo "Test 1 : test basic chmod"

    echo "$CMD mkdir dir_to_chmod"
    mkdir dir_to_chmod

    echo "$CMD touch file_to_chmod"
    touch file_to_chmod

    echo "$CMD ls -l"
    ls --color=auto -l
    echo

    echo "$CMD chmod 0777 dir_to_chmod file_to_chmod"
    sudo chmod 0777 dir_to_chmod file_to_chmod
    echo "$CMD ls -l"
    ls --color=auto -l
    echo

    echo "$CMD chmod -x dir_to_chmod file_to_chmod"
    chmod -x dir_to_chmod file_to_chmod
    echo "$CMD ls -l"
    ls --color=auto -l
    echo

    echo "$CMD sudo chmod 0643 dir_to_chmod file_to_chmod"
    sudo chmod 0643 dir_to_chmod file_to_chmod
    echo "$CMD ls -l"
    ls --color=auto -l
    echo

    echo "$CMD sudo chmod 0755 file_to_chmod"
    sudo chmod 0755 file_to_chmod
    echo "$CMD sudo chmod 0644 dir_to_chmod"
    sudo chmod 0644 dir_to_chmod
    echo "$CMD ls -l"
    ls --color=auto -l
    echo

    rmdir dir_to_chmod
    rm file_to_chmod
}


test2(){
    echo "Test 2 : check access"

    FILE=test_access.txt
    CONTENT="You Shouldn't be able to see this :p"

    echo "$CMD echo $CONTENT > $FILE"
    echo $CONTENT > $FILE

    echo "$CMD chmod 0000 $FILE"
    chmod 0000 $FILE

    echo "$CMD cat $FILE (should not open)"
    cat $FILE
    echo

    NEW_CONTENT="NEW CONTENT"
    echo "$CMD $NEW_CONTENT > $FILE (shouldn't be able to write)"
    echo $NEW_CONTENT > $FILE
    echo


    echo "$CMD chmod 0777 $FILE"
    chmod 0777 $FILE

    echo "$CMD echo $NEW_CONTENT > $FILE"
    echo $NEW_CONTENT > $FILE

    echo "$CMD cat $FILE (should not open)"
    cat $FILE
    echo

    ls -l
}


run_test(){
    # check basic chmod
    test1

    # check basic access
    test2
}


START=$(date +%s.%N)
run_test
END=$(date +%s.%N)
DIFF=$(echo "$END - $START" | bc)

echo "Elapsed time : $DIFF seconds"