When using g++ and gcc in compiling it results to a directory/file can't be found, I already update my system but the problem persists. Also, how to return the terminal to its previous look? I hate the updated one because it is small.
Here's my terminal.

    Install the system.devel component before doing any sort of dev work on Solus.

    sudo eopkg it -c system.devel

    Regarding the terminal: What part of it is small? The font? You can change that in the Terminal settings.

      Staudey Thank you for replying, my terminal was different before I ran an update.

        I'm really sorry, but how to find system-devel?

        I told you in the comment above; run this command:

        sudo eopkg it -c system.devel

        This installs the basic development tools.

        Oh, I did eopkg search system.devel and it didn't returned results. I'm sorry. Thank you!

          torben656 That's because system-devel is a component (a collection of packages), not a package.
          You can get a list of them with sudo eopkg lc.
          Also, I recommend you to check the output of sudo eopkg --help. It's really self-explanatory.

          Regards.

          [EDIT] Oh, and btw... You can check the list of packages inside a component too: sudo eopkg info -c <component>

            torben656 installing binutils linuxheaders glibc-devel might do if you need C and C++ only