In certain situations, we may need to pass arguments or parameters to functions. In such situations, we can pass arguments as follows.
Calling the script with command-line parameters is as follows:
$ name arg1 arg2 arg3 . . .
Let's type a function as follows:
$ hello() { echo "Hello $1, let us be a friend."; }
Call the function in the command line as follows:
$ hello Ganesh
Output:
Hello Ganesh, let us be a friend
Let's write the script function_07.sh. In this script, we pass command-line parameters to the script as well as the function:
#!/bin/bash
quit()
{
exit
}
ex()
{
echo $1 $2 $3
}
ex Hello hi bye# Function ex with three arguments
ex World# Function ex with one argument
echo $1# First argument passed to script
echo $2# Second argument passed to script
echo $3# Third argument passed to script
quit
echo fooTest the script as follows:
$ chmod +x function_07.sh $ ./function_07.sh One Two Three
Output:
Hello hi bye World One Two Three...