How can I run shell (terminal) in Google Colab?

问题

I know that I can call !ls to issue ls command to shell.

But I want features like history or tab-completion.

Is it possible to do so in Google Colab?

回答1:

You can use jQuery Terminal Emulator backed with google.colab.kernel.invokeFunction

Here's an example notebook.

The key part is here, where you back it with shell function.

def shell(command):
  return JSON([getoutput(command)])
output.register_callback('shell', shell)

And here's how you use invokeFunction:

try {
    let res = await google.colab.kernel.invokeFunction('shell', [command])
    let out = res.data['application/json'][0]
    this.echo(new String(out))
} catch(e) {
    this.error(new String(e));
}

Here's a screenshot.

回答2:

Better try this -

Install Teleconsole on Colab, its a package to use terminal over internet -
```
 !curl https://www.teleconsole.com/get.sh | sh
```

Run below code on colab notebook to use Teleconsole -

 import subprocess as sp
 process = sp.Popen("teleconsole",shell=True,stdin=sp.PIPE,stdout=sp.PIPE,stderr=sp.PIPE)
 for i in range(6):
   print(process.stdout.readline().decode())

You should get output something like -

 Starting local SSH server on localhost...
 Requesting a disposable SSH proxy on eu.teleconsole.com for root...
 Checking status of the SSH tunnel...

 Your Teleconsole ID: eu88d75d24084905shgdjhjhfgd1934e55c3786438a3

 WebUI for this session: 
 https://eu.teleconsole.com/s/88d75d24084905shgdjhjhfgd1934e55c3786438a3

Either open the web interface by following the link for accessing the terminal or open a local shell terminal and install Teleconsole using the command -
```
 curl https://www.teleconsole.com/get.sh | sh
```
Then use the below code to join the terminal using Teleconsole Id you got in step No. 2-
```
 teleconsole join <Teleconsole ID>
```

This method can also be tunneled through ssh with some additional steps.