Unix & Linux: How do I reference a variable in fish shell with a default fallback? (2 Solutions!!)

Unix & Linux: How do I reference a variable in fish shell with a default fallback? (2 Solutions!!)

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Unix & Linux: How do I reference a variable in fish shell with a default fallback? (2 Solutions!!)
Unix & Linux: How do I reference a variable in fish shell with a default fallback? (2 Solutions!!)
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