BASH SCRIPT – COMMAND LINE ARGUMENTS (POSITIONAL PARAMETERS) – In this tutorial, you will learn how to take command line arguments in shell script with examples.
- Process of passing the input arguments to the program at the time of execution is called as command line arguments
- In shell, this is done with the help of $ symbol.
| S.N | POSITIONAL PARAMETERS | DESCRIPTION |
| 1. | $0 | Indicates the filename itself |
| 2. | $1 | Indicates the first argument |
| 3. | $2 | Indicates the second argument |
| … | ||
| 4. | $* | Represents the total number of input arguments which are submitted to the shell program |
| 5. | $# | Shows the count of total number of arguments passed to the shell program |
I. EXAMPLE OF COMMAND LINE INPUTS
1. SOURCE CODE
2. OUTPUT
II. EXAMPLE OF COMMAND LINE INPUTS – MUCH ARGUMENTS
1. SOURCE CODE
echo “————————————————-“
echo “\t\tCommand Line Arguments”
echo “————————————————-“
# check whether the command line arguments are submitted or not
if [ $# -ne 0 ]
then
echo “Total Input Arguments are Submitted: $#”
for i in $*
do
echo $i
done
else
echo “No inputs are submitted…Please submit the CMD inputs…”
fi
2. OUTPUT
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