Shell Programming and Scripting

#!/bin/bash
#check if dir exists, if so write to it 



echo " please enter the dir path"
read dir

if [ "$dir" = "" ]
        then
                echo " Please enter a dir name"

elif [ -d $dir -a -w $dir ]

        then
                echo " File hello.out is created"
                echo "wow!!!" > $dir/hello.out
        else
                echo " incorrect"
                exit
fi

total 40
8 drwxr-xr-x 29 root root 4096 Feb  3 00:55 ..
8 -rw-r--r--  1 root root    7 Feb  3 01:02 hello.out
8 d---------  2 root root 4096 Feb  3 01:03 test
8 drwxrwxrwt  4 root root 4096 Feb  3 06:09 .
8 d---------  2 root root 4096 Feb  3 06:09 no_write_perm

[root@localhost no_write_perm]# sh directorycheck.sh 
sh directorycheck.sh 
+ sh directorycheck.sh
 please enter the dir path
/var/tmp/no_write_perm
 File hello.out is created
echo -ne "\033]0;${USER}@${HOSTNAME%%.*}:${PWD/#$HOME/~}"; echo -ne "\007"
++ echo -ne '\033]0;root@localhost:/var/tmp/no_write_perm'
[root@localhost no_write_perm]#