date "+%:H%:M%：S" >time.txt
head -n 18 /etc/passwd |tail -n 3
find ./bin/*[[:upper:]]*|tee bin_westos_fine.txt|wc -l
find /etc/ -name passwd >
find /etc/ -name passwd 1>/tmp/westos.out 2>/tmp/westos.err
find /etc/ -name passwd 2>&1 |tee /tmp/passwd原文：http://blog.51cto.com/13997003/2288076