Download leiningen script to ~/.lein,
make it executable with chmod 755 lein.
Add ~/.lein into $PATH, and run lein repl.
This will download clojure jar into folder
~/.m2/repository/org/clojure/clojure/1.8.0.
Add an alias into your ~/.bash_aliases:
alias clj='java -cp ~/.m2/repository/org/clojure/clojure/1.8.0/clojure-1.8.0.jar clojure.main'.
So you can start a clojure repl with clj (which is much faster than lein repl).
To run a script, add script file name and arguments after clj.
For example:
cat << EOF > hi.clj
(println "hello world")
EOF
clj hi.clj
cat << EOF > hello.clj
(doseq [name *command-line-args*] (println (#(str "Hello, " % "!") name)))
EOF
clj hello.clj Leo Chad
P.S.: you can also download clojure jar from its website directly.