1. Presented by, Mr. Satish Pise
Experiment No. 9
Presented by,
Mr. Satish Pise

2. Command Line Parameters ($1 $2 ..)
# sh addem 10 30
This example passes two command line parameters (10 and 30) to the script addem
Example 1
#!/bin/bash
# using one command line parameter
value1=10
total=$[ $value1 * $1 ]
echo $total

3. Example 2 #!/bin/bash # testing string parameters echo Hello $1, glad to meet you. # sh test3 satish

4. Example 3
#!/bin/bash
# handling lots of parameters
total=$[ ${10} * ${11} ]
echo The tenth parameter is ${10}
echo The eleventh parameter is ${11}
echo The total is $total
$ sh test

5. Counting parameters ($#)
Example 1 #!/bin/bash # getting the number of parameters echo There were $# parameters supplied. $ sh test8 There were 0 parameters supplied. $ sh test

6. Being Shifty Example 1 #!/bin/bash # demonstrating the shift command
count=1
while [ -n "$1" ] do
echo "Parameter #$count = $1"
count=$[ $count + 1 ]
shift
done
$ sh test13 rich barbara katie jessica

7. Example 2 #!/bin/bash # demonstrating a multi-position shift echo "The original parameters: $*" shift 2 echo "Here’s the new first parameter: $1" $ sh test

8. Processing simple options
Example 1 #!/bin/bash # extracting command line options and values while [ -n "$1" ] do case "$1" in -a) echo "Found the -a option";; -b) param="$2" echo "Found the -b option, with parameter value $param" shift 2;; -c) echo "Found the -c option";; --) shift break;; *) echo "$1 is not an option";; esac shift done count=1 for param in echo "Parameter #$count: $param" count=$[ $count + 1 ] $ sh test17 -a -b test1 –d