diff --git a/Sem1/Unix_Programming/script_10a.awk b/Sem1/Unix_Programming/script_10a.awk
new file mode 100644
index 0000000..5a56858
--- /dev/null
+++ b/Sem1/Unix_Programming/script_10a.awk
@@ -0,0 +1,41 @@
+{
+	split( $0, inpt, "-")
+	if ((inpt[1] < 1) || (inpt[1] > 31) || (inpt[2] < 1) || (inpt[2] > 12))
+	{
+		print "Invalid Date!"
+		exit 0
+	}
+	else
+	{
+		switch (inpt[2])
+		{
+			case 1: print "Jan"
+				break
+			case 2: print "Feb"
+				break
+			case 3: print "Mar"
+				break
+			case 4: print "Apr"
+				break
+			case 5: print "May"
+				break
+			case 6: print "Jun"
+				break
+			case 7: print "Jul"
+				break
+			case 8: print "Aug"
+				break
+			case 9: print "Sep"
+				break
+			case 10: print "Oct"
+				break
+			case 11: print "Nov"
+				break
+			case 12: print "Dec"
+				break
+		}
+		print inpt[1]
+		print inpt[3]
+		exit 0
+	}
+}
diff --git a/Sem1/Unix_Programming/script_10b.awk b/Sem1/Unix_Programming/script_10b.awk
new file mode 100644
index 0000000..34be5f4
--- /dev/null
+++ b/Sem1/Unix_Programming/script_10b.awk
@@ -0,0 +1,27 @@
+BEGIN{
+	printf("\nOriginal FIle\n")
+	i=1
+}
+{
+	print $0
+	line[i++]=$0
+}
+END{
+	for(j=1; j<i; j++)
+	{
+		for(k=j+1; k<i; k++)
+		{
+			if (line[j]==line[k])
+			{
+				line[k]=""
+			}
+		}
+	}
+	printf("\n The file after deleting duplicate lines\n")
+	for(k=1; k<i; k++)
+	{
+		if(line[k]!="")
+			printf("\n"line[k])
+	}
+	printf("\n")
+}
diff --git a/Sem1/Unix_Programming/script_11a.awk b/Sem1/Unix_Programming/script_11a.awk
new file mode 100644
index 0000000..967b044
--- /dev/null
+++ b/Sem1/Unix_Programming/script_11a.awk
@@ -0,0 +1,15 @@
+BEGIN{
+	print "Total number of books sold in each category"
+}
+{
+	books[$1]+=$2
+}
+END{
+	for(item in books)
+	{
+		printf("\t%-17s %1s %-5d \n", item, "=", books[item])
+		total+=books[item]
+	}
+	printf("%-17s %1s %-5d \n","Total Books Sold ", "=", total)
+}
+
diff --git a/Sem1/Unix_Programming/script_11b.awk b/Sem1/Unix_Programming/script_11b.awk
new file mode 100644
index 0000000..814dc30
--- /dev/null
+++ b/Sem1/Unix_Programming/script_11b.awk
@@ -0,0 +1,28 @@
+BEGIN { 
+	FS=":"
+	printf("\n\t\tsalary statement of employees for the month\n")
+	printf("sl.no\tname\t\tdesignation\tBASIC\tDA\tHRA\tGROSS\n")
+	print
+}
+{
+	slno++; basic_tot+=$5;
+	if ( $5 >= 10000 )
+	{
+		da=0.45*$5; da_tot+=da;
+		hra=0.15*$5;hra_tot+=hra;
+	}
+	else
+       	{ 
+		da=0.50*$5;da_tot+=da;
+		hra=0.20*$5;hra_tot+=hra;
+	}
+		sal_tot+=$5 + da + hra
+		printf("%2d\t%-15s %12-s %8d %8.2f %8.2f %8.2f\n",slno,$2,$3,$5,da,hra,$5+da+hra)
+}
+END{
+	printf( "\n\ttotal basic paid is : rs " basic_tot)
+	printf( "\n\ttotal da paid is : rs " da_tot)
+	printf( "\n\ttotal hra paid is : rs " hra_tot)
+	printf( "\ntotal salary paid is : rs " sal_tot)
+	printf("\n")
+}
diff --git a/Sem1/Unix_Programming/script_1a.sh b/Sem1/Unix_Programming/script_1a.sh
new file mode 100644
index 0000000..4d5c751
--- /dev/null
+++ b/Sem1/Unix_Programming/script_1a.sh
@@ -0,0 +1,15 @@
+#!/bin/bash
+
+if [ $# -eq 1 ]
+then
+	if [ -e $1 ]
+	then
+		echo "Larget File in the directory: $(find $1 -printf '%k %p\n' | sort -nr | head -n 1 | cut -d " " -f 2)"
+
+	else
+		echo "Path does not exist! Please check the path."
+		exit 0
+	fi
+else
+	echo "This script takes only one valid directory name as an arguement!"
+fi
diff --git a/Sem1/Unix_Programming/script_1b.sh b/Sem1/Unix_Programming/script_1b.sh
new file mode 100644
index 0000000..a69d1b5
--- /dev/null
+++ b/Sem1/Unix_Programming/script_1b.sh
@@ -0,0 +1,9 @@
+#! /bin/bash
+
+if [ $# -eq 1 ]
+then
+	mkdir -pv $1
+else
+	echo "This Script is only programmed to take one arguement as an input!"
+fi
+
diff --git a/Sem1/Unix_Programming/script_2a.sh b/Sem1/Unix_Programming/script_2a.sh
new file mode 100644
index 0000000..c74eccf
--- /dev/null
+++ b/Sem1/Unix_Programming/script_2a.sh
@@ -0,0 +1,22 @@
+#!/bin/bash
+
+if [ $# -eq 2 ]
+then
+	
+	PERM1=$(stat --printf=”%a”  $1)
+	PERM2=$(stat --printf=”%a”  $2)
+
+	if [ "$PERM1" = "$PERM2" ]
+	then
+		echo Both the files have same permissions: $(stat --printf="%A" $1)
+	else
+		echo The given files have different permissions
+		echo "$1 : $(stat --printf="%A" $1)"
+		echo "$2 : $(stat --printf="%A" $2)"
+	fi
+else
+	echo "This script is programmed to use two files in order 
+		to compare their permissions"
+
+fi
+
diff --git a/Sem1/Unix_Programming/script_2b.sh b/Sem1/Unix_Programming/script_2b.sh
new file mode 100644
index 0000000..4975ef4
--- /dev/null
+++ b/Sem1/Unix_Programming/script_2b.sh
@@ -0,0 +1,17 @@
+#!/bin/bash
+
+if [ $# -eq 0 ]
+then
+	echo "Run this script with one or more  username(s) as arguement!"
+else
+	for i in $*
+	do
+		if [ $(grep $i /etc/passwd) ]
+		then
+			echo "Home directory for $i: "
+			eval "echo ~$i"
+		else
+			echo "user does not exsist"
+		fi
+	done
+fi
diff --git a/Sem1/Unix_Programming/script_3a.sh b/Sem1/Unix_Programming/script_3a.sh
new file mode 100644
index 0000000..51fe384
--- /dev/null
+++ b/Sem1/Unix_Programming/script_3a.sh
@@ -0,0 +1,18 @@
+#!/bin/bash
+
+if [ $# -ne 1 ]
+then
+	echo "Run this cript with only one filename as arguement!"
+else
+	if [ -f "$1" ]
+	then
+		echo "Name : $1"
+		echo "Permissions : $(stat --format="%A" $1)"
+		echo "Type: $(stat --format="%F" $1)"
+		echo "Owner: $(stat --format="%U" $1)"
+		echo "Group: $(stat --format="%G" $1)"
+		echo "Size: $(stat --format="%s" $1)"
+	else
+		echo "File does not exsist"
+	fi
+fi
diff --git a/Sem1/Unix_Programming/script_3b.sh b/Sem1/Unix_Programming/script_3b.sh
new file mode 100644
index 0000000..16e29bb
--- /dev/null
+++ b/Sem1/Unix_Programming/script_3b.sh
@@ -0,0 +1,38 @@
+#!/bin/bash
+
+while true
+do
+	clear
+	echo "**Password entered will not visible for security reasons**"
+	echo "Enter Password: "
+	read -s passFirst
+	echo "Re-enter Password: "
+	read -s passConfirm
+
+	if [ "$passFirst" = "$passConfirm" ]
+	then
+		clear
+		echo "Terminal Locked !"
+		stty intr ''
+		stty eof ''
+		stty kill ''
+		stty stop ''
+		stty susp ''
+		echo "To unlock, Enter Password: "
+		passFirst=""
+		until [ "$passFirst" = "$passConfirm" ]
+		do
+			read -s passFirst
+		done
+		stty intr '^C'
+		stty eof '^D'
+		stty kill '^U'
+		stty stop '^S'
+		stty susp '^Z'
+		echo "Terminal Unlocked !"
+		exit
+	else
+		echo "Password Mismatch !"
+		sleep 3
+	fi
+done	
diff --git a/Sem1/Unix_Programming/script_4a.sh b/Sem1/Unix_Programming/script_4a.sh
new file mode 100644
index 0000000..97fa4aa
--- /dev/null
+++ b/Sem1/Unix_Programming/script_4a.sh
@@ -0,0 +1,19 @@
+#!/bin/bash
+
+if [ $# -eq 0 ]
+then
+	echo "This script requires atleast one filename as arguement"
+else
+	for i in $*
+	do
+		if [ -f $i ]
+		then
+			tr '[a-z]' '[A-Z]' < $i>tempFile
+			mv tempFile $i
+			echo "File $i has been translated."
+		else
+			echo "$i does not exist in the current directory"
+			exit 1
+		fi
+	done
+fi
diff --git a/Sem1/Unix_Programming/script_4b.sh b/Sem1/Unix_Programming/script_4b.sh
new file mode 100644
index 0000000..0af1ac1
--- /dev/null
+++ b/Sem1/Unix_Programming/script_4b.sh
@@ -0,0 +1,32 @@
+clear
+
+if [ $# -eq 0 ]
+then
+	printf "Invalid arguments"
+else
+	if [ $# -eq 1 ]
+	then 
+		dir=`pwd`
+	elif [ $# -eq 2 ] 
+	then
+		dir=$2 
+	fi
+
+if [ -f $1 ] 
+then
+	inode=`ls -i $1 | cut -d " " -f 1`
+	printf "hard link of $1 are:\n" 
+	find $dir -inum $inode
+	find $dir -type l -ls |tr -s " " |grep $1 |cut -d " " -f 12 > soft 
+	s=`wc -l < soft`
+	if [ $s -eq 0 ] 
+	then
+		echo "There is no soft links"
+	else
+		echo "Soft links of $1 are"
+		cat soft
+	fi
+else
+	printf "file doesn't exist"
+fi
+fi
diff --git a/Sem1/Unix_Programming/script_5a.sh b/Sem1/Unix_Programming/script_5a.sh
new file mode 100644
index 0000000..a4651e5
--- /dev/null
+++ b/Sem1/Unix_Programming/script_5a.sh
@@ -0,0 +1,11 @@
+#!/bin/bash
+
+if [ ! -f "$1" ] || [ $# -ne 1  ]
+then
+	echo "This script only accepts one valid filename as arguement!"
+else
+	statLAT=$(stat --printf "%x" $1)
+	lat=$(date --date="$statLAT" +"%d/%m/%Y  %I:%M %p")
+	echo "FileName: $1"
+	echo "Last Access Time: $lat"
+fi
diff --git a/Sem1/Unix_Programming/script_5b.sh b/Sem1/Unix_Programming/script_5b.sh
new file mode 100644
index 0000000..aedd644
--- /dev/null
+++ b/Sem1/Unix_Programming/script_5b.sh
@@ -0,0 +1,12 @@
+#!/bin/bash
+
+echo "Current Date: $(date +"%d/%m/%Y")\n"
+currDate=$(date +"%d")
+if [ $currDate -le 9 ]
+then
+	currDate=$(echo $currDate | cut -f 2)
+	echo "$(ncal | sed 's/\b'"$currDate"'\b/'*'/')"
+else
+	echo "$(ncal | sed 's/\b'"$currDate"'\b/'**'/')"
+fi
+
diff --git a/Sem1/Unix_Programming/script_6a.sh b/Sem1/Unix_Programming/script_6a.sh
new file mode 100644
index 0000000..0462ed4
--- /dev/null
+++ b/Sem1/Unix_Programming/script_6a.sh
@@ -0,0 +1,17 @@
+#!/bin/bash
+if [ $# -eq 0 ]
+then
+	echo “No arguments”
+	exit
+else
+	list=$(grep -rwlc "$1" *)
+	if [ $? -eq 0 ] 
+	then
+		for x in $list
+		do
+			echo "Filename: $x"
+			cat $x
+			cp -v $x ~/mydir
+		done
+	fi
+fi
diff --git a/Sem1/Unix_Programming/script_6b.sh b/Sem1/Unix_Programming/script_6b.sh
new file mode 100644
index 0000000..2dee874
--- /dev/null
+++ b/Sem1/Unix_Programming/script_6b.sh
@@ -0,0 +1,13 @@
+#!/bin/bash
+
+currentDir=$(pwd)
+listOfFiles=$(ls -l "$currentDir" | awk '{print $9}')
+echo "Current Directory: $currentDir"
+echo "All files whose filename is at least 10 characters: "
+for f in $listOfFiles
+do
+	if [ $(expr length "$f") -gt 10 ]
+	then
+		echo $f
+	fi
+done
diff --git a/Sem1/Unix_Programming/script_7a.sh b/Sem1/Unix_Programming/script_7a.sh
new file mode 100644
index 0000000..a67435b
--- /dev/null
+++ b/Sem1/Unix_Programming/script_7a.sh
@@ -0,0 +1,15 @@
+#!/bin/bash
+
+currentTime=$(date +"%H")
+if [ $currentTime -ge 00 ] && [ $currentTime -le 11 ]
+then
+	echo "Good Morning!"
+elif [ $currentTime -ge 12 ] && [ $currentTime -le 14 ]
+then
+	echo "Good Afternoon!"
+elif [ $currentTime -ge 15 ] && [ $currentTime -le 18 ]
+then
+	echo "Good Evening!"
+else
+	echo "Good Night!"
+fi
diff --git a/Sem1/Unix_Programming/script_7b.sh b/Sem1/Unix_Programming/script_7b.sh
new file mode 100644
index 0000000..fdaee6d
--- /dev/null
+++ b/Sem1/Unix_Programming/script_7b.sh
@@ -0,0 +1,18 @@
+#!/bin/bash
+
+if [ $# -lt 2 ]
+then
+	echo "This script takes in two filenames as arguements"
+	exit
+else
+	string1=`cat $1 | tr '\n' ' '`
+	for (( i=2; i<=$#; i++ ))
+	do
+		echo "Filename: ${!i}"
+		for a in $string1
+		do
+			echo "$a: `grep -c "$a" "${!i}"`"
+		done
+	done
+fi
+
diff --git a/Sem1/Unix_Programming/script_8a.sh b/Sem1/Unix_Programming/script_8a.sh
new file mode 100644
index 0000000..5428b3a
--- /dev/null
+++ b/Sem1/Unix_Programming/script_8a.sh
@@ -0,0 +1,30 @@
+#!/bin/bash
+
+if [ $# -ne 1 ]
+then
+	echo "This script takes one username as arguement!"
+	exit
+else
+	if [ $(grep -c $1 /etc/passwd) -ne 0 ]
+	then
+		if [ $(last -Fw|grep -c $1) -ne 0 ]
+		then
+			loginDate=$(last -Fw |grep $1 | head -1 | tr -s " " | awk '{printf("%s %s %s %s\n",$5,$6,$7,$8)}')
+			loginDate=$(date -d "$loginDate" "+%s")
+			currDate=$(date "+%s")
+			sessionTime=$((currDate-loginDate))
+			sday=$(( sessionTime/86400 ))
+			shour=$(( (sessionTime-(sday*86400))/3600 ))
+			smin=$(( (sessionTime-(sday*86400)-(shour*3600))/60 ))
+			ssec=$(( (sessionTime-(sday*86400)-(shour*3600)-(smin*60)) ))
+			printf "Active Session Time: %02d days %02d hours %02d mins %02d secs\n" "$sday" "$shour" "$smin" "$ssec"
+
+		else
+			echo "The user has no recent logins"
+			exit
+		fi
+	else
+		echo "Invalid Username!"
+		exit
+	fi
+fi
diff --git a/Sem1/Unix_Programming/script_8b.sh b/Sem1/Unix_Programming/script_8b.sh
new file mode 100644
index 0000000..5938546
--- /dev/null
+++ b/Sem1/Unix_Programming/script_8b.sh
@@ -0,0 +1,21 @@
+#!/bin/bash
+
+if [ $# -ne 1 ]
+then
+	echo "This script requires only one username as arguement"
+	exit
+else
+	startTime=$(date -d "now" "+%s")
+	until who|grep -sw "$1"
+	do
+		curTime=$(date -d "now" "+%s")
+		if [ $(( $curTime-$startTime )) -ge 90 ]
+		then
+			echo "Timed Out!"
+			exit
+		fi
+	done
+	echo "User $1 logged in !"
+	exit
+fi
+
diff --git a/Sem1/Unix_Programming/script_9a.sh b/Sem1/Unix_Programming/script_9a.sh
new file mode 100644
index 0000000..614f1c1
--- /dev/null
+++ b/Sem1/Unix_Programming/script_9a.sh
@@ -0,0 +1,17 @@
+#!/bin/bash
+
+if [ $# -ne 3 ]
+then
+	echo "This script requires three arguemnts! FileName,Starting Line Number and Ending Line Number"
+	exit
+else
+	if [ -f $1 ]
+	then
+		eval "sed -n $2,$3\p $1"
+		exit
+	else
+		echo "No Such File!"
+		exit
+	fi
+fi
+
diff --git a/Sem1/Unix_Programming/script_9b.sh b/Sem1/Unix_Programming/script_9b.sh
new file mode 100644
index 0000000..55c2464
--- /dev/null
+++ b/Sem1/Unix_Programming/script_9b.sh
@@ -0,0 +1,17 @@
+#!/bin/bash
+if [ $# -ne 1 ]
+then
+	echo "This script takes in only one filename as arguement!"
+	exit 1
+else
+	if [ -f $1 ]
+	then
+		echo  "**ORIGINAL FILE**"
+		cat $1
+		printf "\n"
+		echo "**FOLDED FILE**"
+		fold -s -w 40 $1 | sed 's/$/\//'
+	else
+		echo "file doesn't exist"
+	fi
+fi