Almost. The quotes and double quotes need not be escaped (by a backslash), the backslash needs to be escaped only once, but in the first sed it needs an extra escape (because of the weak double quotes) from the shell. This should be equivalent:

Code:

sed "s/'/\\\'/g" | sed 's/"/\\"/g'

---------- Post updated at 09:48 ---------- Previous update was at 09:10 ----------

@sri3001: I can't reproduce, nor explain the behavior of your third example:
What OS are you on? Could you post the output of

Code:

od -c sr1.txt

---------- Post updated at 09:52 ---------- Previous update was at 09:48 ----------

The pipe is not open, it feeds the output of the first sed into the sed on the second line.