open empty file

[mystic-d]

hey
im programming in c , and i want to open a new EMPTY file , im using the
"open" system call . this is my code:

 fd=open(filename, O_WRONLY | O_CREAT);

but this open me the old file (if there is such one) ... and i want to open a new empty one..

how can i do this ?
thanks !

[wje_lf]

Do this at the command line:

man truncate
man ftruncate

and all will be revealed.

[scm]

Better to "man 2 open" and learn about O_TRUNC.

[wje_lf]

Better to "man 2 open" and learn about O_TRUNC.

Correct. I don't know what I was thinking. Furrfu.