Jython binary error on execution - jython

Question

As soon as I execute jython binary, I get the following error:
Traceback (most recent call last):
File "/opt/jython2.7.0/bin/jython", line 444, in <module>
main(sys.argv)
File "/opt/jython2.7.0/bin/jython", line 431, in main
os.execvp(command[0], command[1:])
File "/usr/lib/python2.7/os.py", line 346, in execvp
_execvpe(file, args)
File "/usr/lib/python2.7/os.py", line 370, in _execvpe
func(file, *argrest)
OSError: [Errno 2] No such file or directory
It is not clear for me which file is missing here, but what is stranger is that it can be executed from Eclipse with no problems.
Any idea? I'm a bit lost here

Answer 1

Check your JAVA_HOME environment variable. Mine was pointing to a non-existing Java installation.
Broken:
$ export JAVA_HOME=bad path
$ jython2.7.0/bin/jython
Traceback (most recent call last):
File "jython2.7.0/bin/jython", line 444, in <module>
main(sys.argv)
File "jython2.7.0/bin/jython", line 431, in main
os.execvp(command[0], command[1:])
File "/usr/lib/python2.7/os.py", line 346, in execvp
_execvpe(file, args)
File "/usr/lib/python2.7/os.py", line 370, in _execvpe
func(file, *argrest)
OSError: [Errno 2] No such file or directory
Fixed:
$ export JAVA_HOME=$HOME/java/jdk1.8.0_121
$ jython2.7.0/bin/jython
Jython 2.7.0 (default:9987c746f838, Apr 29 2015, 02:25:11)
[Java HotSpot(TM) 64-Bit Server VM (Oracle Corporation)] on java1.8.0_121
Type "help", "copyright", "credits" or "license" for more information.