Changes

| style="padding-left:15px;" |Directory and File Management Commands

Shell Command Line Editing*[https://www.ostechnix.com/list-useful-bash-keyboard-shortcuts/ Bash Shell Shortcut Keys]<br>| style="padding-left:15px;"|General Linux Text File Management Commands*[http://man7.org/linux/man-pages/man1/pwd.1.html pwdcat]<br>*[http://man7.org/linux/man-pages/man1/cd.1p.html cdmore]<br>*, [http://man7.org/linux/man-pages/man1/ls.1p.html lsless]<br>*[http://man7.org/linux/man-pages/man1/cal.1.html caltouch]<br>*[http://man7.org/linux/man-pages/man1/date.1.html datefile]<br>*[http://man7.org/linux/man-pages/man1/who.1.html who] , [http://man7.org/linux/man-pages/man1/w.1.html wfind]<br>*[http://man7.org/linux/man-pages/man1/whoami.1.html whoami ,who am i]<br>*[http://man7.org/linux/man-pages/man1/clear.1.html clear , &lt;ctrl&gt;&lt;l&gt;]<br>