ps -u username #list all processing started by username
kill pic # terminate process
pmap pid #show process's memory mapping/usage
ls -l directory # list all files in directory
grep keyw...
参考
在图片上画基本图形如线,矩形,文字等
图片读写
imread()
Mat pic=imread("a.png");
imshow("title",pic); //图片显示
imwrite()
Mat a=xxx;
imwrite("filename.png",a);
图片截取
Mat a=xxx;
Mat b...