Here is the command I have typed in order. I expect it to run my "simple hello work" program.
vagrant@vagrant-ubuntu-trusty-64:~$ ls
filename.zip tester
vagrant@vagrant-ubuntu-trusty-64:~$ file -b tester
ELF 64-bit LSB executable, x86-64, version 1 (SYSV), statically linked, not stripped
vagrant@vagrant-ubuntu-trusty-64:~$ tester
No command 'tester' found, did you mean:
Command 'gtester' from package 'libglib2.0-dev' (main)
Command 'jester' from package 'jester' (universe)
Command 'testr' from package 'testrepository' (main)
tester: command not found