## Linux compilation

    > mkdir build
    > cd build
    > cmake -DCMAKE_BUILD_TYPE=Debug ..
    > make

## Exercise

Open project `files`. Write a program which modify files under `project` directory:

- Change permision for all .exe files to `rwxrw-rw-`.
- Change permision for all .cpp and .hpp files to `rw-r--r--`.

You should get output like this:

```Bash
File: "fileA.cpp"          | Permissions: rw-------
File: "fileA.hpp"          | Permissions: rw-------
File: "fileB.cpp"          | Permissions: rw-------
File: "fileB.hpp"          | Permissions: rw-------
File: "fileC.cpp"          | Permissions: rw-------
File: "fileC.hpp"          | Permissions: rw-------
File: "project.exe"        | Permissions: rw-------

File: "fileA.cpp"          | Permissions: rw-r--r--
File: "fileA.hpp"          | Permissions: rw-r--r--
File: "fileB.cpp"          | Permissions: rw-r--r--
File: "fileB.hpp"          | Permissions: rw-r--r--
File: "fileC.cpp"          | Permissions: rw-r--r--
File: "fileC.hpp"          | Permissions: rw-r--r--
File: "project.exe"        | Permissions: rwxrw-rw-
```