added automation scripts

Author: Sagar1895

biggest3.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+num1=1
+num2=4
+num3=6
+if [ $num1 -gt $num2 -a $num1 -gt $num3 ]
+then echo "$num1 is greater"
+elif [ $num2 -gt $num1 -a $num2 -gt $num3 ]
+then echo " $num2 is greater" 
+else
+	echo "$num3 is greater"
+fi

disckcheck.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+size=`df -h . | awk 'NR>1{print $(NF-1)}'  | sed 's/%/ /g'`
+if [ $size -gt 20 ]
+then
+	echo "memory reached the threshold value" | mail -s "disk usage" sagarco96@gmail.com
+fi

discusage.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+set -x
+sys_mem=`df -h . | awk -F " " '(NR>1){print $(NF -1)}' | sed 's/%/ /g'`
+if [ $sys_mem -gt 10 ]
+then
+	echo "memory reached the threshold value. current usage is $sys_mem" | mail -s "Disk usage of 
+	the server" sagarco96@gmail.com
+else
+	echo "Nothing"
+fi

fil1

@@ -0,0 +1,15 @@
+#!/bin/bash
+echo "enter the filename"
+read name
+n=1
+while read line
+do
+	if [ $n -gt 1 ] ; then
+		age=`echo $line | awk -F " " '{print $4}'`
+		if [ $age -gt 60 ]
+		then
+			echo "$line" | awk -F " " '{print $1}'
+		fi
+	fi
+	n=`expr $n + 1`
+done < $name