Let's see an explanation on SED
The slash as a delimiter
The character after the s is the delimiter. It is conventionally a slash, because this is what ed, more, and vi use. It can be anything you want, however. If you want to change a pathname that contains a slash - say /usr/local/bin to /common/bin - you could use the backslash to quote the slash:
sed 's/\/usr\/local\/bin/\/common\/bin/' <old >new
Gulp. Some call this a 'Picket Fence' and it's ugly. It is easier to read if you use an underline instead of a slash as a delimiter:
sed 's_/usr/local/bin_/common/bin_' <old >new
Some people use colons:
sed 's:/usr/local/bin:/common/bin:' <old >new
Others use the "|" character.
sed 's|/usr/local/bin|/common/bin|' <old >new