How to read or write the picture and sound file in Unix Sorry : I want to read or write the picture and sound file in Unix, for example the '. Retrieval 'file. This has nothing to be done : ..... Int fd1=open ( "/load/picture1.jpg", O_RDONLY); .....    But fd1 is -1, why? Thanks!! How to read or write the picture and sound file in Unix Hi. I suggest checking the return value of open (). If it isn 't 0, the output of the error message. Try call the function [void perror (const char buried)] and it will tell you the reason why. Like this : If (fd1 "0) Perror ( "open"); How to read or write the picture and sound file in Unix Check documents and the location of authority, and if there is no problem, it seems that the landlord said, the most perror printed with wrong information. How to read or write the picture and sound file in Unix Thanks! Now is ok, i find i make a mistake, the file name is not picture1.jpg! picuture1.jpg Thanks! How to read or write the picture and sound file in Unix SeeLand and mike_chen : Thanks very much!you are very simple and make a fool mistake! friendly!i [ Closed window ]