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Facing problem in testing the file permission

script name: filetest.sh

if [ $# -eq 0 ] ; then

echo " You didn't enter any argument"

elif [ ! -e $1 ] ; then

echo " file not exist"

elif [ ! -r $1 ] ; then

echo " file not readable"

elif [ ! -w $1 ] ; then

echo " file not writable"

else

echo " file both readable and writable"

fi

running like...

$ ./filetest filename

but it showing.....both readable and writable

for those file which are not readable and writable...

Comments

  • mfillpotmfillpot Posts: 2,180
    The problem is how you are checking for an empty string, this is what is causing the problems, you want to use [ -z $1 ] which check is the string is zero length.
    A working form of the script is below.

    if [ -z $1 ] ; then
    echo " You didn't enter any argument"
    elif [ ! -e $1 ] ; then
    echo " file not exist"
    elif [ ! -r $1 ] ; then
    echo " file not readable"
    elif [ ! -w $1 ] ; then
    echo " file not writable"
    else
    echo " file both readable and writable"
    fi
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