using sed

Shell Programming and Scripting
1

hi.. i am trying to find files containing a certain text. the following is my code

find . -exec grep -l  "sometexttobefound" '{}' \; -print | uniq | sed 's/[\r\n]/,/g' `

the result of the find might return multiple filepaths, but they are printed on different lines. my aim is to print them on the same line separated by comma. i used "sed" for this purpose as shown in code, but it doesn seem to be working.

infact, not quite sure if my regular exp is right for carriage return. ????

2 
var=$(find . -exec grep -l  "sometexttobefound" '{}' \;)
var=$(echo $var | sed 's/ /,/g')
echo $var

:):b: