Using the git-diff Command

• Show unstaged changes:

git diff

• Show all uncommitted changes (including staged ones):

git diff HEAD

• Show only staged (added, but not yet committed) changes:

git diff --staged

• Show changes from all commits since a given date/time (a date expression, e.g. “1 week 2 days” or an ISO date):

git diff 'HEAD@*{3 months|weeks|days|hours|seconds ago*}'

• Show diff statistics, like files changed, histogram, and total line insertions/deletions:

git diff --stat *commit*

• Output a summary of file creations, renames, and mode changes since a given commit:

git diff --summary *commit*

• Compare a single file between two branches or commits:

git diff *branch_1*..*branch_2* *path/to/file*

• Compare different files from the current branch to another branch:

git diff *other_branch*:*path/to/file2* *path/to/file1*

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