A single hyphen can be followed by multiple single-character flags. A double hyphen prefixes a single, multicharacter option.
Consider this example:
tar -czf
In this example, -czf specifies three single-character flags: c, z, and f.
Now consider another example:
tar --exclude
In this case, --exclude specifies a single, multicharacter option named exclude. The double hyphen disambiguates the command-line argument, ensuring that tar interprets it as exclude rather than a combination of e, x, c, l, u, d, and e.
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