Designed by Junyi Yang([email protected])

In this lab, we'll introduce some useful tools. You can skip some steps if you already know about them.

We recommend using Ubuntu/Debian. All commands are based on them.

• Google
• Bing

Use

sudo apt-get install manpages-de  manpages-de-dev  manpages-dev glibc-doc manpages-posix-dev manpages-posix

to download UNIX System Manuals to your computer.

If you already know Command-Line Compile and GCC, you can skip this step.

You can use any editors(vim, emacs, gedit, vscode, etc.) to write codes, but you need to use gcc to compile your C progam in the terminals. Also, you can choose any shell you like. Now open your terminal and follow me.

1. Make sure you have GNU C Compiler(gcc). You can use gcc --version to determine that.
   • If not, you can use sudo apt-get install gcc to install it.
   • If you fail, ask for help by using search engines.
2. Write some simple C codes, just like hello-world.c.
3. Use gcc hello-world.c -o hello-world to compile you program.
   • There are some useful flags that you may need in the future. Make sure you know what they mean. If not, please get help from google.com or bing.com.
   • -o
   • -g
   • -c
   • -S
   • -O0 -O1 -O2 -O3
   • -Wall
   • -Werror
4. Now you can use ./hello-world to run it.