,

SED – Custom Separators – Dealing with Filepaths

a@t400:~$ echo "hello"|  sed -e 's/e/ö/g'
höllo
a@t400:~$ echo "hello"|  sed -e 's#e#ö#g'
höllo
a@t400:~$ echo "hello"|  sed -e 's^e^ö^g'
höllo

References

http://backreference.org/2010/02/20/using-different-delimiters-in-sed/