example.rush

# An idea of a new scripting language that focuses on glueing system commands.

# single line command
$ echo hello world

# multi-lines command
$( 
  python myscript.py
    && echo "done"
)

# get stdout from command and do further processing
branch =$ git branch -—show-current
$ dep deploy -—branch=${branch}
branch =$(
  git branch --show-current
)
$ dep deploy --branch=${branch}

# the further processing can be some sophisticated scripts.
files =$ find -name '*_test\.py'
for file in files.splitlines() {
    $ python ${file}
}

# pipe works
$ cat package.json | grep name

# type casting make it more robust.
count =$ ls -1 | wc -l
count = int(count)
print("files count: ${count}")

# array mapping.
hosts = ['h1', 'h2']
hosts.map(host => {
  $ rsync -azP ./src ${host}:/var/www
})

# handle errors.
try {
  $ mkdir /tmp/newdir
  $ touch /tmp/newdir/newfile
  $ rmdir /tmp/newdir
} catch (e) {
  print("exit code: ${e.exit_code}")
  print("error: ${e.stderr}")
}

# module strutils can manipulate string easier.
import strutils
print(join(host, ","))

# ...