Groosh

@Grapes([
 @Grab(group='org.codehaus.groovy.modules.groosh',module='groovy-groosh',version='[0.3.56,)'),
 @GrabConfig(systemClassLoader=true)
])

import groosh.Groosh
Groosh.withGroosh(this)

ls() >> stdout

//Read a text file and write it to stdout
@Grapes([
 @Grab(group='org.codehaus.groovy.modules.groosh',module='groovy-groosh',version='[0.3.56,)'),
 @GrabConfig(systemClassLoader=true)
])

import groosh.Groosh
Groosh.withGroosh(this)

cat('test_scripts/blah.txt') >> stdout

//Count the lines of all .java files in this directory and all its subdirectories.
//Write the total number of lines to stdout.

@Grapes([
 @Grab(group='org.codehaus.groovy.modules.groosh',module='groovy-groosh',version='[0.3.56,)'),
 @GrabConfig(systemClassLoader=true)
])

import groosh.Groosh
Groosh.withGroosh(this)

def f = find('.', '-name', '*.java', '-ls')
def total = 0
def lines = grid { values,w ->
  def x = values[2,4,6,10]
  def s = x.join('	')
  w.println(s)
  total += Integer.parseInt(values[6])
}

f | lines
lines >> stdout
println "Total: ${total}"