How to change default output file of g++ in ubuntu?

Question

Trivially

g++ sample.c

generates a.out

Can g++ be configured to output to a different default name for output file ?

Solution 1

You need to use the -o option of g++

g++ -o output_file_name  source.cpp

Solution 2

Use the g++ -o switch: g++ sample.cc -o myoutfile

See a man page for g++

-o file
Place output in file file.

Solution 3

If you want to change the default output name to test for example, all you need to do is go to .bashrc, and put in:

alias g++='g++ -o test'

But you need to reopen a new terminal for it to work.

Solution 4

Man pages are your friends:
$ man g++ (and just do a search for "out" and you're done ;)

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Comments

[Martin York]

All Unix like systems have what is called manual pages. You can read them by typing man <command> in this case man g++. Some modern versions also have the slightly more complex but also more complete information systems types info <command> or info g++

[jedesah]

I think the question here is asking if it's possible to change the default name not change the name on a case by case basis. So if I understand the question correctly, all of the answers below are incorrect. I actually came here looking for a way to change the default name, I know full well how the -o switch works as I suspect @Nullpoet does as well.

[Username Obfuscation]

I think the pertinent word in the asker's question was 'default', i.e. where is it actually defined that a.out is the default setting when -o is not used, and how can you redefine a new default?