#nexpect
nexpect is a node.js module for spawning child applications (such as ssh) and seamlessly controlling them using javascript callbacks. nexpect is based on the ideas of the expect library by Don Libes and the pexpect library by Noah Spurrier.
node.js has good built in control for spawning child processes. nexpect builds on these core methods and allows developers to easily pipe data to child processes and assert the expected response. nexpect also chains, so you can compose complex terminal interactions.
curl http://npmjs.org/install.sh | sh
npm install nexpect
var nexpect = require('./lib/nexpect').nspawn;
nexpect.spawn("echo hello")
.expect("hello")
.run(function(err) {
if (!err) {
console.log("hello was echoed");
}
});
nexpect.spawn("ls -al /tmp/undefined")
.expect("No such file or directory")
.run(function(err) {
if (!err) {
console.log("checked that file doesn't exists");
}
});
nexpect.spawn("node")
.expect("Type '.help' for options.")
.sendline("console.log('testing')")
.expect("testing")
.sendline("process.exit()")
.run(function(err) {
if (!err) {
console.log("node process started, console logged, process exited");
} else {
console.log(err)
}
});