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Feb 19, 2019
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Revision selection: Couple minor clarifications and updates #1183

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4 changes: 2 additions & 2 deletions book/07-git-tools/sections/revision-selection.asc
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[[_revision_selection]]
=== Revision Selection

Git allows you to refer to a set of commits or a range of commits in several ways.
Git allows you to refer to a single commit, set of commits, or range of commits in a number of ways.
They aren't necessarily obvious but are helpful to know.

==== Single Revisions
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----

Generally, eight to ten characters are more than enough to be unique within a project.
For example, as of June 2018, the Linux kernel (which is a fairly sizable project) has over 700,000 commits and almost six and a half million objects in its object database, with no two objects whose SHA-1s are identical in the first 11 characters.
For example, as of February 2019, the Linux kernel (which is a fairly sizable project) has over 875,000 commits and almost seven million objects in its object database, with no two objects whose SHA-1s are identical in the first 12 characters.

[NOTE]
.A SHORT NOTE ABOUT SHA-1
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