Hi guys, first time posting.
I was reading over some code and I need help identifying what the following snippet means:
I don't understand what the "\033[2k" does. I've tried googling for quite a while but all the explanations pertaining to these characters seemed irrelevant and did not make sense to me.Code:char ack_buf [599]; printf("\033[2K\r%s\n", ack_buf);
These are escape sequences interpreted by the terminal. Those sequences allow to move the cursor, change colors, clear the screen, etc. Google 'terminal escape sequence' and you will get your answer for the meaning of 2K in particular. Notice this has nothing to do with C programming.
See for example
- ANSI escape code - Wikipedia, the free encyclopedia
- ASCII Table - ANSI Escape sequences
- ANSI Escape Sequences: Colours and Cursor Movement
It looks like "ESC [ 2 K" clears the entire line, as if you'd positioned the cursor at the beginning of the line and overwritten it with all spaces.
Last edited by dwks; 04-07-2009 at 12:54 PM.
dwk
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Ah thank you very much! I will go look that up immediately. I apologize for my inexperience; I was not aware of these terminal escape sequences.
