Replacing all backslash with double backslashes in bash

Question

I'm trying to replace all \ with \\ in bash, I'm doing it like this but bash gets stuck in a never-ending loop. Where am I going wrong?

myVar="${myVar//\//\\\\}"

Answer 1

You can use sed for that:

echo "hello\world\hello\world" | sed 's/\\/\\\\/g'

Outputs:

hello\\world\\hello\\world