Basic knowledge of the GCC compiler

Description

Here I only talk about the most basic things. After all, I just started using Linux. And I don't have any good notes to use, so I thought I would simply write a blog. But written blog there is the risk of being seen by others, but it doesn't matter, I mainly write to myself to see, so you see Hostler hair, if not written well, please forgive me.

1. View version

1 GCC -version2gcc4.8. 3 20140627

2. Store the compiled file in the same directory as the. C Script

gcc avril.c-o./lav

This compiles the AVRIL.C under the ~/script/into the lav file in the same directory. Unlike Windows,linux, which does not need the suffix of the executable file, it is too lazy to add.

If the./lav is written as LAV, then a script directory is created in the script directory and the compiled file is inside. So you can understand that this is the script directory.

3. Run this file

If you enter LAV directly, you will be prompted with an error. and Windows is no problem. Here to enter./lav.

Or you can enter the full path and put it in quotation marks (or drag and drop files directly to the console):

' /home/abram/script/lav '

So I understand why./lav. Because the full path (./lav equivalent) is required to run the executable file, the direct input lav,linux will look for the environment variable.

Basic knowledge of the GCC compiler