BTW, Clojure is "out" for command line tools because of the JVM startup time but I have thought about Clojurescript + node.
(import [sh [cat grep wc]])
(->
(cat "/usr/share/dict/words")
(grep "-E" "^hy")
(wc "-l")) cat <<eof > Hello.java
public class Hello {
public static void main(String[] args) {
System.out.println("Hello, world!"); }}
eof
javac Hello.java
echo "Main-Class: Hello" > manifest.mf
jar cvfm hello.jar manifest.mf Hello.class
time java -jar hello.jar
Hello, world!
real 0m0.153s
user 0m0.132s
sys 0m0.020s
lein new hello
cd hello
# Pesty s-expressions, so hard to work with... ;-)
cat <<eof|patch -p0
--- project.clj 2015-04-16 04:13:09.734160136 +0200
+++ project.clj.patch 2015-04-16 04:09:33.809504079 +0200
@@ -3,4 +3,5 @@
:url "http://example.com/FIXME"
:license {:name "Eclipse Public License"
:url "http://www.eclipse.org/legal/epl-v10.html"}
+ :main hello.core
:dependencies [[org.clojure/clojure "1.6.0"]])
eof
cat<<eof > src/hello/core.clj
(ns hello.core
(:gen-class))
(defn -main
"I don't do a whole lot."
[]
(println "Hello, World!"))
eof
lein uberjar
time java -jar target/hello-0.1.0-SNAPSHOT-standalone.jar real 0m1.060s
user 0m1.400s
sys 0m0.040s
wget ftp://ftp.gnu.org/pub/gnu/kawa/kawa-2.0.jar
wget ftp://ftp.gnu.org/pub/gnu/kawa/kawa-2.0.jar.sig
gpg --recv-key D269E756
gpg --verify kawa-2.0.jar.sig
echo '(format #t "Hello, world!\n")' > hello.scm
# Not sure how to bundle up a scheme script with kawa
# to a stand-alone jar...
java -jar kawa-2.0.jar --main -C hello.scm
time java -cp kawa-2.0.jar:. hello
Hello, world!
real 0m0.284s
user 0m0.296s
sys 0m0.020s # First run:
time guile hello.scm
;;; note: auto-compilation is enabled, set GUILE_AUTO_COMPILE=0
(...)
Hello, world!
real 0m0.066s
user 0m0.044s
sys 0m0.020s
#Ed: with precompiled code under $HOME/.cache/guile (?)
time guile hello.scm
Hello, world!
real 0m0.040s
user 0m0.036s
sys 0m0.004s pi@raspberrypi ~/lisp/ccl $ time ./armcl -n -Q -e '(progn (princ "hello") (quit))'
hello
real 0m0.112s
user 0m0.020s
sys 0m0.080s
I think it's 64-bit (?). Most of the time it hasn't mattered for me, at least when writing scripts.
You can also just build the "old" version (0.6.7) with the `-m32` GCC flag, and it works fine on 64-bit Linux and OS X. It's very stable in my experience, and works fine.