shell(workingDir) {
call("git clone git@github.com:OlegKrikun/kotlin-shell.git").execute()
call("cd kotlin-shell").execute()
call("ls").output { println(it) } // or call(...).printOutput()
// OR...
"git clone git@github.com:OlegKrikun/kotlin-shell.git"()
"cd kotlin-shell"()
"ls" { println(it) }
}