Below is the script. When I ran this with command
./scriptname --deploy --uglify"
I'm getting result for echo "$deploy" as true. But it should be uglify right since deploy=$2
#!/bin/bash
deploy=true
uglify=true
while (( $# > 1 )); do
case $1 in
--deploy) deploy="$2" echo "$deploy";;
--uglify) uglify="$2";;
*) break;
esac; shift 2
done
you mean something like this:
#!/bin/bash
deploy=false
uglify=false
while (( $# >= 1 )); do
case $1 in
--deploy) deploy=true;;
--uglify) uglify=true;;
*) break;
esac;
shift
done
echo "deploy: $deploy"
echo "uglify: $uglify"
examples
$ ./scriptname
deploy: false
uglify: false
$ ./scriptname --deploy
deploy: true
uglify: false
$ ./scriptname --uglily
deploy: false
uglify: true
$ ./scriptname --depoly --uglily
deploy: true
uglify: true
While dealing with this I came up with the following. We encapsulate all the procedure inside a function that takes all the arguments given to the script. Then, it iterates over all the arguments and whenever it find one that starts with double hyphen --arg1 it assigns the following argument arg2 to a global variable with the name of the first argument arg1="arg2". Next, it shifts the arguments' positions until it finish with all arguments.
#------ arguments_test.sh ------
#!/bin/bash
pararser() {
# Define default values
name=${name:-"name_def"}
lastName=${lastName:-"lastName_def"}
# Assign the values given by the user
while [ $# -gt 0 ]; do
if [[ $1 == *"--"* ]]; then
param="${1/--/}"
declare -g $param="$2"
fi
shift
done
}
pararser $@
echo "My name is " $name $lastName
In this way we can define default values if they are not passed.
$ arguments_test.sh
> My name is name_def lastName_def
$ arguments_test.sh --name Foo --lastName Bar
> My name is Foo Bar
The variables in the command are all expanded before anything is executed, so the old value of $deploy is used in the expansion. So it's executing
deploy="--uglify" echo "true"
Change that line to:
--deploy) deploy="$2"; echo "$deploy";;
If you don't want to change the value of deploy in the script process, you can run echo in a subprocess:
--deploy) deploy="$2" bash -c 'echo "$deploy"';;
