Create if-else-scripts.sh

Author: legah2045

if-else-scripts.sh

@@ -0,0 +1,88 @@
+if else statements
+#ife.sh
+#!/bin/sh
+a=10
+b=20
+if [ $a == $b ]
+then
+   echo "a is equal to b"
+else
+   echo "a is not equal to b"
+fi
+
+#ife1.sh
+#if [ $# -lt 3 ]
+if (( $# == 3 ))
+then
+#Number of arguments on the command line.
+echo '$#:' $#
+#Process number of the current process.
+echo '$$:' $$
+#Display the 3rd argument on the command line, from left to right.
+echo '$3:' $3
+#Display the 10th argument on the command line, from left to right.
+echo '${10}:' ${10}
+#Display the name of the current shell or program.
+echo '$0:' $0
+#Display all the arguments on the command line using * symbol.
+echo '$*:' $*
+#Display all the arguments on the command line using @ symbol.
+echo '$@:' $@
+date
+echo '$?:' $?
+else
+echo "Please Pass the 3 command line args along with script"
+fi
+
+#ife2.sh
+#!/bin/bash
+echo -n "Enter a number: "
+read VAR
+if [ $VAR -gt 10 ]
+then
+  echo "The variable is greater than 10."
+fi
+
+#ife3.sh
+#!/bin/bash
+echo -n "Enter a number: "
+read VAR
+if [ $VAR -gt 10 ]
+then
+  echo "The variable is greater than 10."
+else
+  echo "The variable is equal or less than 10."
+fi
+
+#ife4.sh
+#!/bin/bash
+echo -n "Enter a number: "
+read VAR
+if [ $VAR -gt 10 ]
+then
+  echo "The variable is greater than 10."
+elif [ $VAR -eq 10 ]
+then
+  echo "The variable is equal to 10."
+else
+  echo "The variable is less than 10."
+fi
+
+
+#ife5.sh
+#!/bin/bash
+echo -n "Enter the first number: "
+read VAR1
+echo -n "Enter the second number: "
+read VAR2
+echo -n "Enter the third number: "
+read VAR3
+if [ $VAR1 -ge $VAR2 ] && [ $VAR1 -ge $VAR3 ]
+then
+  echo "$VAR1 is the largest number."
+elif [ $VAR2 -ge $VAR1 ] && [ $VAR2 -ge $VAR3 ]
+then
+  echo "$VAR2 is the largest number."
+else
+  echo "$VAR3 is the largest number."
+fi