Ubuntu + scala REPL, Commands not typed on console

Question

I am using Ubuntu 18.04 + Scala 2.11.12 (OpenJDK 64-Bit Server VM, Java 1.8.0_162).

Once I open the scala shell, I am not able to see anything that I type. It gets typed though.

Below is how it is happening when I type println("Hello, world!") at console:

$ scala  Welcome to Scala 2.11.12 (OpenJDK 64-Bit Server VM, Java 1.8.0_162). Type in expressions for evaluation. Or try :help.  scala> Hello, world!  scala> 

Any ideas on how we can get through?

Answer 1

To fix the problem in the current scala repl session run:

import sys.process._ "reset" ! 

To fix the problem completely removed scala and install it with dpkg (not with apt):

sudo apt-get remove scala-library scala sudo wget www.scala-lang.org/files/archive/scala-2.11.12.deb sudo dpkg -i scala-2.11.12.deb 

Answer 2

The following thing is working for me.

1. Start sbt

2. Open a scala console via sbt.

   ~$ sbt     [info] Loading project definition from /home/abhay/project     [info] Set current project to abhay (in build file:/home/abhay/)     [warn] sbt server could not start because there's another instance of sbt running on this build.     [warn] Running multiple instances is unsupported     sbt:abhay> console     [info] Starting scala interpreter...     Welcome to Scala 2.12.4 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_161).     Type in expressions for evaluation. Or try :help.     scala> printf("Hello, Abhay!");      Hello, Abhay!     scala> 

This is working for me for now.

I am pretty sure its some environment issue. Anyone else facing something similar?

~Abhay