diff --git a/Arthemetic-Operators.sh b/Arthemetic-Operators.sh
index 0957818..0a29f3f 100644
--- a/Arthemetic-Operators.sh
+++ b/Arthemetic-Operators.sh
@@ -5,6 +5,7 @@
 #Modified Date:
 #Author: Ankam Ravi Kumar
 # START #
+
 echo -e "Please enter some value: \c"
 read -r a
 echo -e "Please enter another value: \c"
diff --git a/arkit.co.in-nested-if.sh b/arkit.co.in-nested-if.sh
index 5be4b8d..17d421b 100644
--- a/arkit.co.in-nested-if.sh
+++ b/arkit.co.in-nested-if.sh
@@ -5,6 +5,7 @@
 #Modified Date:
 #Author: Ankam Ravi Kumar
 # START #
+
 echo -e "Please Enter Maths Marks: \c"
 read -r m
 echo -e "Please Enter Physics Marks: \c"
diff --git a/array.sh b/array.sh
index ca7d6f8..7c61603 100644
--- a/array.sh
+++ b/array.sh
@@ -6,6 +6,7 @@
 #WebSite: https://arkit.co.in
 #Author: Ankam Ravi Kumar
 # START #
+
 fruits=( "Apple" "Orange" "Banana" "Sapota" )
 fruits[3]='Green Apple'
 for fruit in ${fruits[@]}
diff --git a/details.sh b/details.sh
index 8a64338..cf701a3 100644
--- a/details.sh
+++ b/details.sh
@@ -7,7 +7,7 @@
 #Author: Ankam Ravi Kumar
 # START #
 
-echo "WEL COME TO $USER"
+echo "WEL COME TO $USERNAME"
 echo "Your present working directory is `pwd`"
 echo "current logged in users are `who`"
 echo "Today date is `date`"
diff --git a/hi.sh b/hi.sh
index b0365ef..6652c64 100644
--- a/hi.sh
+++ b/hi.sh
@@ -9,13 +9,13 @@
 
 tmp=`date | cut -c12-13`
 if [ $tmp -lt 11 ] ; then
-echo "Good Mornind have a nice day $USER"
+echo "Good Mornind have a nice day $USERNAME"
 elif [ $tmp -gt 11 -a $tmp -lt 16 ] ; then
-echo "Good Ofter noon $USER"
+echo "Good Ofter noon $USERNAME"
 elif [ $tmp -gt 15 -a $tmp -lt 19 ] ; then
-echo "Good Evening $USER"
+echo "Good Evening $USERNAME"
 else 
-echo "Good Night Sweet dreams $USER"
+echo "Good Night Sweet dreams $USERNAME"
 fi
 echo "Now the time is `date |cut -c12-19`"
 
diff --git a/if-elif-if.sh b/if-elif-if.sh
index ee2e09b..da88e28 100644
--- a/if-elif-if.sh
+++ b/if-elif-if.sh
@@ -5,6 +5,7 @@
 #Modified Date:
 #Author: Ankam Ravi Kumar
 # START #
+
 echo -e "Please Enter a Value: \c"
 read -r a
 echo -e "Please Enter b Value: \c"
diff --git a/if-else-statement.sh b/if-else-statement.sh
index 1393446..7e5b04f 100644
--- a/if-else-statement.sh
+++ b/if-else-statement.sh
@@ -6,7 +6,7 @@
 #Website: https://arkit.co.in
 #Author: Ankam Ravi Kumar
 # START #
-echo -e "Enter any value> \c"
+echo -e "Enter any value: \c"
 read -r a
 echo -e "Enter any value: \c"
 read -r b
diff --git a/info.sh b/info.sh
index b32785c..caac61a 100644
--- a/info.sh
+++ b/info.sh
@@ -10,8 +10,8 @@
 echo "Hi you there"
 echo "what is your name? (Type your name here and press Enter)"
 read NM
-echo "Hi  $NM Good Morning"
-echo "your currently logged in as $USER"
+echo "Hi $NM Good Morning"
+echo "your currently logged in as $USERNAME"
 echo "your present working directory is `pwd`"
 
 # END #
diff --git a/myfirstscript.sh b/myfirstscript.sh
index ad53bc9..2c39c40 100644
--- a/myfirstscript.sh
+++ b/myfirstscript.sh
@@ -7,7 +7,7 @@
 #Modified by:
 
 # START
-echo "Welcome $USER"
+echo "Welcome $USERNAME"
 echo "Your present working directory is `pwd`"
 echo "Today date is `date`"
 # END
diff --git a/nestedif.sh b/nestedif.sh
index 5be4b8d..17d421b 100644
--- a/nestedif.sh
+++ b/nestedif.sh
@@ -5,6 +5,7 @@
 #Modified Date:
 #Author: Ankam Ravi Kumar
 # START #
+
 echo -e "Please Enter Maths Marks: \c"
 read -r m
 echo -e "Please Enter Physics Marks: \c"
diff --git a/or-operator.sh b/or-operator.sh
index 5a66bd7..2931df0 100644
--- a/or-operator.sh
+++ b/or-operator.sh
@@ -5,7 +5,8 @@
 #Modified Date:
 #Author: Ankam Ravi Kumar
 # START #
-echo -e "Enter First Numberic Value: \c"
+
+echo -e "Enter First Numeric Value: \c"
 read -r t
 echo -e "Enter Second Numeric Value: \c"
 read -r b
@@ -13,7 +14,7 @@ read -r b
 if [ $t -le 20 -o $b -ge 30 ]; then
 echo "Statement is True"
 else
-echo "Flase, Statement Try Again."
+echo "False Statement, Try Again."
 fi
 
 # END #
diff --git a/userexists.sh b/userexists.sh
index da5e3c2..1b8dde7 100644
--- a/userexists.sh
+++ b/userexists.sh
@@ -5,7 +5,7 @@
 ##WebSite: https://arkit.co.in
 
 ##Start
-echo "Please Enter User name you want check:\c"
+echo -e "Please Enter User name you want check: \c"
 read user
 grep $user /etc/passwd > /dev/null
 if [ $? -eq 0 ]; then
diff --git a/variables.sh b/variables.sh
index 7d765aa..7f3128d 100644
--- a/variables.sh
+++ b/variables.sh
@@ -6,6 +6,7 @@
 #website: https://arkit.co.in
 #Author: Ankam Ravi Kumar
 # START #
+
 A=10
 Ba=23
 BA=45