Changes

*[http://man7.org/linux/man-pages/man1/cd.1p.html cd]<br>

*[http://man7.org/linux/man-pages/man1/ls.1p.html ls]<br>

*[http://man7.org/linux/man-pages/man1/more.1.html date]<br>

*[http://man7.org/linux/man-pages/man1/file.1.html who, w]<br>