git

[rsteube]

• git root command

Main Porcelain Commands

• add Add file contents to the index
• am Apply a series of patches from a mailbox
• archive Create an archive of files from a named tree
• bisect Use binary search to find the commit that introduced a bug
• branch List, create, or delete branches
• bundle Move objects and refs by archive
• checkout Switch branches or restore working tree files
• cherry-pick Apply the changes introduced by some existing commits
• citool Graphical alternative to git-commit
• clean Remove untracked files from the working tree
• clone Clone a repository into a new directory
• commit Record changes to the repository
• describe Give an object a human readable name based on an available ref
• diff Show changes between commits, commit and working tree, etc
• fetch Download objects and refs from another repository
• format-patch Prepare patches for e-mail submission
• gc Cleanup unnecessary files and optimize the local repository
• grep Print lines matching a pattern
• gui A portable graphical interface to Git
• init Create an empty Git repository or reinitialize an existing one
• log Show commit logs
• maintenance Run tasks to optimize Git repository data
• merge Join two or more development histories together
• mv Move or rename a file, a directory, or a symlink
• notes Add or inspect object notes
• pull Fetch from and integrate with another repository or a local branch
• push Update remote refs along with associated objects
• range-diff Compare two commit ranges (e.g. two versions of a branch)
• rebase Reapply commits on top of another base tip
• reset Reset current HEAD to the specified state
• restore Restore working tree files
• revert Revert some existing commits
• rm Remove files from the working tree and from the index
• shortlog Summarize 'git log' output
• show Show various types of objects
• sparse-checkout Initialize and modify the sparse-checkout
• stash Stash the changes in a dirty working directory away
• status Show the working tree status
• submodule Initialize, update or inspect submodules
• switch Switch branches
• tag Create, list, delete or verify a tag object signed with GPG
• worktree Manage multiple working trees

Ancillary Commands / Manipulators

• config Get and set repository or global options
• fast-export Git data exporter
• fast-import Backend for fast Git data importers
• filter-branch Rewrite branches
• mergetool Run merge conflict resolution tools to resolve merge conflicts
• pack-refs Pack heads and tags for efficient repository access
• prune Prune all unreachable objects from the object database
• reflog Manage reflog information
• remote Manage set of tracked repositories
• repack Pack unpacked objects in a repository
• replace Create, list, delete refs to replace objects

Ancillary Commands / Interrogators

• annotate Annotate file lines with commit information
• blame Show what revision and author last modified each line of a file
• bugreport Collect information for user to file a bug report
• count-objects Count unpacked number of objects and their disk consumption
• difftool Show changes using common diff tools
• fsck Verifies the connectivity and validity of the objects in the database
• help Display help information about Git
• instaweb Instantly browse your working repository in gitweb
• merge-tree Show three-way merge without touching index
• rerere Reuse recorded resolution of conflicted merges
• show-branch Show branches and their commits
• verify-commit Check the GPG signature of commits
• verify-tag Check the GPG signature of tags
• whatchanged Show logs with difference each commit introduces

Interacting with Others

• archimport Import a GNU Arch repository into Git
• cvsexportcommit Export a single commit to a CVS checkout
• cvsimport Salvage your data out of another SCM people love to hate
• cvsserver A CVS server emulator for Git
• imap-send Send a collection of patches from stdin to an IMAP folder
• p4 Import from and submit to Perforce repositories
• quiltimport Applies a quilt patchset onto the current branch
• request-pull Generates a summary of pending changes
• send-email Send a collection of patches as emails
• svn Bidirectional operation between a Subversion repository and Git

Low-level Commands / Manipulators

• apply Apply a patch to files and/or to the index
• checkout-index Copy files from the index to the working tree
• commit-graph Write and verify Git commit-graph files
• commit-tree Create a new commit object
• hash-object Compute object ID and optionally creates a blob from a file
• index-pack Build pack index file for an existing packed archive
• merge-file Run a three-way file merge
• merge-index Run a merge for files needing merging
• mktag Creates a tag object
• mktree Build a tree-object from ls-tree formatted text
• multi-pack-index Write and verify multi-pack-indexes
• pack-objects Create a packed archive of objects
• prune-packed Remove extra objects that are already in pack files
• read-tree Reads tree information into the index
• symbolic-ref Read, modify and delete symbolic refs
• unpack-objects Unpack objects from a packed archive
• update-index Register file contents in the working tree to the index
• update-ref Update the object name stored in a ref safely
• write-tree Create a tree object from the current index

Low-level Commands / Interrogators

• cat-file Provide content or type and size information for repository objects
• cherry Find commits yet to be applied to upstream
• diff-files Compares files in the working tree and the index
• diff-index Compare a tree to the working tree or index
• diff-tree Compares the content and mode of blobs found via two tree objects
• for-each-ref Output information on each ref
• get-tar-commit-id Extract commit ID from an archive created using git-archive
• ls-files Show information about files in the index and the working tree
• ls-remote List references in a remote repository
• ls-tree List the contents of a tree object
• merge-base Find as good common ancestors as possible for a merge
• name-rev Find symbolic names for given revs
• pack-redundant Find redundant pack files
• rev-list Lists commit objects in reverse chronological order
• rev-parse Pick out and massage parameters
• show-index Show packed archive index
• show-ref List references in a local repository
• unpack-file Creates a temporary file with a blob's contents
• var Show a Git logical variable
• verify-pack Validate packed Git archive files

Low-level Commands / Syncing Repositories

• daemon A really simple server for Git repositories
• fetch-pack Receive missing objects from another repository
• http-backend Server side implementation of Git over HTTP
• send-pack Push objects over Git protocol to another repository
• update-server-info Update auxiliary info file to help dumb servers

Low-level Commands / Internal Helpers

• check-attr Display gitattributes information
• check-ignore Debug gitignore / exclude files
• check-mailmap Show canonical names and email addresses of contacts
• check-ref-format Ensures that a reference name is well formed
• column Display data in columns
• credential Retrieve and store user credentials
• credential-cache Helper to temporarily store passwords in memory
• credential-store Helper to store credentials on disk
• fmt-merge-msg Produce a merge commit message
• interpret-trailers Add or parse structured information in commit messages
• mailinfo Extracts patch and authorship from a single e-mail message
• mailsplit Simple UNIX mbox splitter program
• merge-one-file The standard helper program to use with git-merge-index
• patch-id Compute unique ID for a patch
• stripspace Remove unnecessary whitespace

External commands

• clang-format

[rsteube]

some examples: https://github.com/fish-shell/fish-shell/blob/master/share/completions/git.fish