How to understand the meaning of diff in git

This article introduces how to understand the meaning of diff in git. The content is very detailed. Interested friends can use it for reference. I hope it will be helpful to you.

In git, diff means "difference" and "difference"; the diff command is used to compare the differences of files, that is, the differences between files in the staging area and the workspace, and can show the difference between the files that have been written to the staging area and those that have been modified but not yet written. The syntax is "git diff [file]".

This article operating environment: Windows10 system, Git2.30.0 version, Dell G3 computer.

What is the meaning of diff in git

The git diff command compares the differences of files, that is, the differences between the staging area and the workspace.

The git diff command shows the difference between a staging area file that has been written and a staging area file that has been modified but not yet written.

There are two main application scenarios for git diff.

Uncached changes: git diff

View cached changes: git diff-- cached

View all cached and uncached changes: git diff HEAD

Display the summary instead of the entire diff:git diff-- stat

Displays the difference between the staging area and the workspace:

$git diff [file]

Displays the difference between the staging area and the last commit (commit):

$git diff-- cached [file]

Or

$git diff-- staged [file]

Show the difference between the two commits:

$git diff [first-branch]... [second-branch]

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