Previously, `touch` remained limited to creating files and updating
their current access and modifications time to the current time. It's
now capable of accepting two different timestamp formats with flags `-d`
and `-t` and referencing timestamps of other files with flag `-r`.
`touch` can also update only the last access time with `-a`, only the
last access time with `-m`, or update both as usual. `touch` updates
both left unspecified.
With `-c`, `touch` does not create a file if it doesn't already exist.
SPDX License Identifiers are a more compact / standardized
way of representing file license information.
See: https://spdx.dev/resources/use/#identifiers
This was done with the `ambr` search and replace tool.
ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
