Tutorial
Arguments can be passed to the script when it is executed, by writing them as a space-delimited list following the script file name.
Inside the script, the $1 variable references the first argument in the command line, $2 the second argument and so forth.The variable $0 references to the current script. In the following example, the script name is followed by 6 arguments.
Example
my_shopping.sh file contains below code.
#!/bin/bashecho "File name is "$0 # holds the current scriptecho $3 # $3 holds bananaData=$5echo "A $Data costs just $6."echo $#Executing the script on terminal as,
bash my_shopping.sh apple 5 banana 8 "Fruit Basket" 15
output is
File name is my_shopping.sh
banana
A Fruit Basket costs just 15
6
The variable $# holds the number of arguments passed to the script
The variable $@ holds a space delimited string of all arguments passed to the script
Exercise
Pass "Shell is fun" (3 arguments) to the script(prog.sh) as an arguments and print the length of the arguments.
Tutorial Code
#!/bin/bashfunction File { # think you are inside the file # Change here echo "print the arguments"}# Do not change anythingif [ ! $# -lt 1 ]; then File $* exit 0fi# change here# here you can pass the argumentsbash test.sh argumentsSolution
#!/bin/bashfunction File { # think you are inside the file # Change Here echo $#}# Do not change anythingif [ ! $# -lt 1 ]; then File $* exit 0fi# change here# here you can pass the argumentsbash prog.sh Shell is funExpected Output
3