I downloaded tomcat version 7.0.16 binary distributions core tar.gz from tomcat's official website to my ubuntu machine, then extracted the downloaded file.
Then, I used terminal command to specify the path to ~/apache-tomcat-7.0.16/bin$ , then I entered startup command, but I have got 'startup: command not found' message, but when I used linux command ls, there were startup.bat and startup.sh under bin/.
I also tried to enter startup.bat and startup.sh, the same message returned. Why I can not start my tomcat v7 from ubuntu terminal window??