Mac Terminal Strange Behaviour (no newline when hitting enter, no visible text )

Question

I'm on Mac OS X 10.11.3 My terminal looks like this:

[Fabian@MacBook-Pro] > 
[Fabian@MacBook-Pro] > pyspark
Python 2.7.11 (default, Jan 29 2016, 17:48:19) 
[GCC 4.2.1 Compatible Apple LLVM 7.0.2 (clang-700.1.81)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
16/03/17 10:08:22 WARN NativeCodeLoader: Unable to load native-hadoop library     for your platform... using builtin-java classes where applicable
Welcome to

      ____              __
     / __/__  ___ _____/ /__
    _\ \/ _ \/ _ `/ __/  '_/
   /__ / .__/\_,_/_/ /_/\_\   version 1.6.1
      /_/

Using Python version 2.7.11 (default, Jan 29 2016 17:48:19)
SparkContext available as sc, HiveContext available as sqlContext.
>>> print 'hello'
>>> hello

>>> quit()
>>> [Fabian@MacBook-Pro] > [Fabian@MacBook-Pro] > [Fabian@MacBook-Pro] > [Fabian@MacBook-Pro] > -bash:     printsf: command not found

in the first line I press enter, and as you see, the prompt starts at another line, then I launch pyspark, do something and quit, then when I return to the prompt I press enter and as you can see, the prompt doesn't appear in a newline! I actually type and nothing is printed to the screen, however the commands are executed as you can see

 -bash:     printsf: command not found

my .bash_profile (located in /Users/Fabian folder) looks like this

# Setting PATH for Python 3.4
# The orginal version is saved in .bash_profile.pysave
PATH="/Library/Frameworks/Python.framework/Versions/3.4/bin:${PATH}"
export PATH
export LC_ALL=en_US.UTF-8
export LANG=en_US.UTF-8
export PYTHONPATH=$PYTHONPATH:/Users/Fabian/Library/Python

##
# Your previous /Users/Fabian/.bash_profile file was backed up as /Users/Fabian/.bash_profile.macports-saved_2016-02-07_at_11:26:24
##

# MacPorts Installer addition on 2016-02-07_at_11:26:24: adding an appropriate PATH variable for use with MacPorts.
export PATH="/opt/local/bin:/opt/local/sbin:$PATH"
# Finished adapting your PATH environment variable for use with MacPorts.

export JAVA_HOME=$(/usr/libexec/java_home)
export PATH=$PATH:/Users/Fabian/apache-maven-3.3.9/bin
export PS1="[\u@\h] > "
export PATH=$PATH:/Users/Fabian/spark-1.6.1-bin-hadoop2.6/bin

How Can I fix this behavior?? Thanks!

Answer 1

As noted in comments (and as described by OP), the expected newline after each message was lost. That is because the application changed the terminal I/O modes dealing with carriage-return / line-feed, e.g.,

• pressing Enter (which is a carriage return) was not translated into a newline (actually a line-feed), and
• newlines sent from the computer were not translated into carriage return / line-feed.

However, on "any" keyboard, you can type a newline by pressing controlJ. The usual fixes apply pressing controlJ first to get a prompt, and completing the command with pressing controlJ):

• stty sane (resets the terminal driver)
• reset (resets the terminal driver as well as asking the terminal to reset itself).