How to create a list from a text fille using SH?-CodePudding

I need to create a SH script that reads a file that contains a list of directories

dirA
dirB
dirC

And use this information to generate a command like this:

go test -coverprofile=coverage.out dirA dirB dirC

The package file is called .package-list and this is the script I have at the moment:

while read package;
do
  go test -coverprofile=coverage.out ./$package
done <.package-list

The problem is that that script executes the go test command three times:

go test -coverprofile=coverage.out ./dirA
go test -coverprofile=coverage.out ./dirB
go test -coverprofile=coverage.out ./dirC

What can I do to read the file and generate a command like I need it?

CodePudding user response：

If using bash instead of sh (You have both tagged, so it's not clear which shell you're targeting), you can read the lines of the file into an array:

readarray -t packages < .package-list
go test -coverprofile=coverage.out "${packages[@]}"

CodePudding user response：

Use xargs

xargs go test -coverprofile=coverage.out < .package-list