Need to check input arguments Bash Shell Script on Mac

Question

I want to check input arguments presence on a bash script on OSX. I do:

if [-z "$1"]

I get:

/usr/local/bin/deploy.sh: line 8: [-z: command not found

Any tips?

Thanks.

Answer 1

You need a space around the condition:

if [ -z "$1" ]

    ^       ^