sed: Can't open /usr/web/plan9/sources.html d-rwxrwxr-x rsc sys 0 Jul 21 2014 d --rw-rw-r-- rsc sys 1449 Apr 3 2006 diff.html --rw-rw-r-- rsc sys 1499 Apr 21 2005 edit.html --rw-rw-r-- rsc sys 1455 Apr 3 2006 history.html --rw-rw-r-- geoff sys 251 Dec 21 2009 mkfile --rw-rw-r-- geoff sys 250 Aug 8 2007 mkfile.inside --rw-rw-r-- rsc sys 340 Aug 7 2007 mkfile.outside --rw-rw-r-- rsc sys 1517 Apr 3 2006 oldpage.html --rw-rw-r-- rsc sys 12 Apr 21 2005 oldpage.txt --rw-rw-r-- rsc sys 1680 Oct 11 2005 page.html --rw-rw-r-- rsc sys 12 Apr 21 2005 page.txt --rw-rw-r-- rsc sys 102 Aug 8 2007 sandbox --rw-r--r-- rsc sys 1950 Oct 11 2005 style.css --rw-rw-r-- rsc sys 1234 Apr 21 2005 werror.html sed: Can't open /usr/web/plan9/sources.html