Git Log
Git log shows your commit history. There are many formatting options to customize the output.
Example
# Full log
git log
# Compact one-line format
git log --oneline
# Show graph with branches
git log --oneline --graph --all
# Show last 5 commits
git log -5
# Filter by author
git log --author="Alice"
# Filter by date
git log --since="2024-01-01" --until="2024-06-30"
# Search commit messages
git log --grep="fix"Viewing Diffs
Git diff shows the exact changes between different states of your files.
Example
# Unstaged changes (working vs staging)
git diff
# Staged changes (staging vs last commit)
git diff --staged
# Between two commits
git diff abc123 def456
# Changes in a specific file
git diff -- filename.js
# Summary of changes
git diff --stat
# Show who changed each line
git blame filename.js