Replace one character with another in Bash

Question

I need to be able to do is replace a space () with a dot (.) in a string in bash.

I think this would be pretty simple, but I\'m new so I ca

Answer 1

In bash, you can do pattern replacement in a string with the ${VARIABLE//PATTERN/REPLACEMENT} construct. Use just / and not // to replace only the first occurrence. The pattern is a wildcard pattern, like file globs.

string='foo bar qux'
one="${string/ /.}"     # sets one to 'foo.bar qux'
all="${string// /.}"    # sets all to 'foo.bar.qux'