what about interactivity, ie executing shell commands with `sudo` where I have to type the pwd? Shal...

# scripting

[elect]

what about interactivity, ie executing shell commands with sudo where I have to type the pwd? Shall I directly execute the script itself with sudo?

[mbonnin]

Interactivity is relatively easy as you can read from stdin with kotlin with something as easy as https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.io/read-line.html

[elect]

awesome, I'll try

[mbonnin]

Now becoming root in the middle of a .kts is another story, you'll certainly need to fiddle with setuid, whatever sudo is doing under the hood

[mbonnin]

But if you just want to run a sudo command, you should be able to readirect stdin to sudo to type the password

[mbonnin]

ProcessBuilder().command("sudo", "whoami").apply {
  inheritIO()
}.start().waitFor()

[elect]

I'm trying with

println(System.`in`.readAllBytes().contentToString())

but the execution gets stuck there

[mbonnin]

stdin is never closed as long as the script is running so readAllBytes will never finish. You'll have to stop reading on a special char like '\n' for an example (which readLine is doing)

[elect]

sorry, I didn't understood. readLine works flawless indeed

[mbonnin]

But if you want to pipe that to sudo , inheritIO like above is easier than first reading the password and then feeding it to sudo

[elect]

no, I was already using that construct, I just missed the inheritIO and wairFor()

[elect]

thanks Martin

[ephemient]

note, sudo really wants to interact with a real terminal, not a redirection, and it will open the controlling terminal for logging and password interaction even if its stdin stdout stderr have been redirected. if you really need to pass a password into sudo programmatically, there is -S, or using JNI to work with pty, but I wouldn't recommend either of those

[elect]

No, I need it interactively