How to retrieve any string (of at least one character) except the one character string “/” (slash) with a regular expression?

Test Cases

These strings should not match our pattern:

• /
• an empty string

All other strings should match our pattern.

The Regular Expression Pattern

^/.+|[^/].+$

The explanation

1. ^ matches the beginning of the string
2. /.+ matches a string beginning by a “/” and following by at least one character
3. | OR operator
4. [^/].+ matches a string beginning by any character except “/” and following by at least one character
5. $ matches the end of the string

So, this regular expression could be read as:
Match a string beginning by a “/” and following by at least one character or match a string beginning by any character except “/” and following by at least one character.