matlab fopen()

file=dir('/home/wang/Desktop/trainset/others/');

for i=:length(file)

     path= strcat('/home/wang/Desktop/trainset/other/',file(i).name,'\n');

     %save('/home/wang/Desktop/trainsetimage_name');

     %save result.txt  -ascii path

     fid=fopen('./result4.txt','a');

     fprintf(fid,path);

end