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Gitk Install Mac

Homebrew is a package management software to install various software on macOS, however, we can also use this open-source Brew on Windows WSL and Linux operating systems such as Debian, Ubuntu, Linux Mint, Fedora, CentOS, RedHat and more… Homebrew is the best package management tool on macOS. When used on Linux, Homebrew is known as Linuxbrew.

HomeBrew installation on Linux or WSL

It installs the package into a separate directory and soft links its files to /usr/local. To make it simple, just like we have apt and yum for Linux to install different packages; in the same way, Homebrew will install and manage software packages in a unified way along with the dependencies needed by the packages, without worrying about the storage location and so on.

Note: To use it on the Windows subsystem for Linux first set it up using this Ubuntu WSL tutorial.

Step 1: Open Terminal and run system update command:

According to your Linux distro on Desktop or server run the system update command, here we will let you know for the most common ones.

Ubuntu & Debian based systems:

WireGuard settings. Apr 07, 2020 When the Linux kernel 5. Install WireGuard by following the instructions for your server OS. 10 onwards, WireGuard, is present in the default Ubuntu repositories and can be installed easily with sudo apt install wireguard If you're currently on any Ubuntu (or derivative) from prior to 19. Install Git on Mac OS X There are several ways to install Git on a Mac. In fact, if you've installed XCode (or it's Command Line Tools), Git may already be installed. To find out, open a terminal and enter git -version. $ git -version git version 2.7.0 (Apple Git-66).

RedHat or CentOS based:

Step 2: Install Brew Dependencies

To set up Brew we need to have the following things on our system- GCC, Glibc, and 64-bit x86_64 CPU. I am sure you already on 64-bit CPU which is common nowadays, for the rest of things use the below commands as per your system.

For Debian, Linux Mint, Ubuntu or other similar OS

sudo apt-get install build-essential curl file git

For RedHat, Fedora, CentOS or other same kinds of Linux OS

sudo yum groupinstall 'Development Tools'
sudo yum install curl file git
sudo yum install libxcrypt-compat

Step 3: Command to download and install HomeBrew

Gitk Install Mac

Now, simply copy & paste the command given below which will download the master script file needed to set up brew on Linux or WSL.

Install HomeBrew

Gitk Install Mac Software

Step 4: Add Homebrew to your system PATH

To run brew command of this package manager from anywhere in the terminal regardless of the directory in which we are, we have to tell our system about it by adding it to the bin. Run the following command on your Linux system one by one.

Gitk

Example to use Brew command on Linux or Windows subsystem for Linux

Gitk Install Mac Version

So, now the package manager is on our system, let’s try to install some packages, for example, git or python.

To install git using brew, the command will be like this:

For Python:

The output for the above git command:

Now to use git simply type Git along with the files you want to clone or update.

Installing GIT via this package manager on Ubuntu Linux WSL

View software information

To know the information of installed packages using homebrew, simply use this one:

For the example above we have installed git & python, thus to know about its version and other information, we will use:

The output will be like this:

View installed software

If at any point of time someone wants to know which are the software or packages have been installed on the system using this package manager use the command:

know the installed packages

Uninstall software

Gitk install mac os

To remove any installed packages use this one:

For example, above we have set up git, thus to remove the same, the command will be

It is not limited to Git only, you can install Nginx and so many others. All binary packages of Homebrew known as bottles are built on GitHub Actions and hosted by Bintray.

How to uninstall Homebrew from system

If of any reason you want to remove the homebrew from your system then run the below syntax:

First, install ruby for Ubuntu or Debian systems

On RedHat or CentOS

Run uninstallation script

To know more about the command usage of Brew, please refer to the official document: “Homebrew Documentation”

Homebrew also has an extension known as ” Homebrew Cask ” to speed up the installation of GUI applications on macOS, however, it is available to support only MAC, thus here only for knowledge, if anyone is interested can visit ” Homebrew Cask ” to learn about it. To enable it just type brew cask.

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Gitk is a graphical repository browser. It was the first of its kind. It can be thought of as a GUI wrapper for git log. It is useful for exploring and visualizing the history of a repository. It’s written in tcl/tk which makes it portable across operating systems. gitk is maintained by Paul Mackerras as an independent project, separate from Git core. Stable versions are distributed as part of the Git suite for the convenience of end users. Gitk can be a helpful learning aid for newcomers to Git.

Gitk Overview

Gitk can be a helpful learning utility for those new to version control, or those transitioning from another version control system like subversion. Gitk is a convenience utility that is packaged with Git core. It provides a graphical user interface that helps with visualization of Git's internal mechanics. Other popular Git GUIs are git-gui and Atlassian's own Sourcetree.

Usage

Gitk is invoked similarly to git log. Executing the gitk command will launch the Gitk UI which will look similar to the following:

The upper left pane displays the commits to the repository, with the latest on top. The lower right displays the list of files impacted by the selected commit. The lower left pane displays the commit details and full diff. Clicking a file in the lower right pane focuses the diff in the lower left pane to the relevant section.

Gitk will reflect the current state of the repository. If the repository state is modified through separate command line usage like changing branches Gitk will need to be reloaded. Gitk can be reloaded by on the File menu -> Reload.

By default Gitk will render the current history of commits. Gitk has a variety of command line options that can be passed on initialization. These options primarily restrict the list of commits rendered to Gitk's top-level view. The general form of execution with these revision options is as follows:

Options

A revision range in the form '..' can be passed to show all revisions between and back to . Alternatively, a single revision can be passed.

Limit commits to a specific file path. To isolate paths from revision names use '--' to separate the paths from any preceding options.

Shows all branches, tags, refs.

Displays the selected item (branches, tags, remotes) as if they were mainline commits. When is passed, further limits refs to ones matching the specified pattern

Render commits more recent than the specified date.

Render commits older than the specified date.

Sort commits by date.

Show commits that modify conflicted files that were identified during a merge

Renders informative labels that indicate which side of a diff commits are from. Commits from the left side are prefixed with a < symbol and those from the right with a > symbol.

When given a range of commits to display (e.g. commit1..commit2 or commit2 commit1), only display commits that exist directly on the ancestry chain between the commit1 and commit2, i.e. commits that are both descendants of commit1, and ancestors of commit2. (See 'History simplification' in git-log(1) for a more detailed explanation.)

Powerful options that let you trace the history of a given code line number range.

Discussion & Examples

In order to provide any valuable output, Gitk needs an underlying repository with committed history. The following code is a sequence of bash commands that will create a new repo with two branches that have commits and have been merged into one.

This demo repository will be a good example to explore with Gitk. This command sequence creates a new repo with 1 commit and an index.txt file. Let us now invoke gitk to examine the repo.

Can Gitk Compare Two Commits?

Continuing with our demo repository let us now create an additional commit:

Once the proceeding commands are executed, gitk will need to be reloaded. Either reload gitk from the command line or use the GUI and navigate to File -> Reload. Once reloaded we should see our new commit.

Gitk Install Mac Os

We can see that the main branch ref is now pointed at the new commit. To compare these two commits we use the upper left history panel. Within the history panel click on a commit that will be the base of the diff. Once selected, right click on a second commit to open up a context menu.

This context menu will provide the options of

Selecting either of these options will cause a diff between the two commits to appear in the lower left pane which in our example will look like:

The diff output shows us that index.txt had a new line of 'prepended content to index' added between the two commits.

How to Use Gitk to Compare Two Branches

Continuing with our example repo, let's create a new branch.

The proceeding command sequence will create a new branch named new_branch and add file new_branch_file.txt to it. Additionally, new content is added to index.txt and an additional commit is made for that update. We now have a new branch that is 2 commits ahead of main. We must reload Gitk to reflect these changes.

This is a great learning opportunity to discuss Git's branching mechanism. Gitk displays the commits as a straight line sequence of commits. The term branch implies that we should expect a 'branch' or fork in the timeline. Git branches are different from other version control systems. In Git, a branch is a pointer to a commit. The pointer moves to commits as they are created. When you create a git branch, you are not changing anything in the structure of the repository or the source tree. You are just creating a new pointer.

In order to compare the commits that differ between the 2 branches Gitk needs to be launched with a specified revision range. Executing gitk main..new_branch will open Gitk with only the commits between the two branch refs

This is a powerful utility for comparing branches.

Gitk vs Git Gui

Git Gui is another Tcl/Tk based graphical user interface to Git. Whereas Gitk focuses on navigating and visualizing the history of a repository, Git Gui focuses on refining individual commits, single file annotation and does not show project history. Git Gui also supplies menu actions to launch Gitk for history exploration. Git Gui is also invoked from the command line by executing git gui.

Gitk Summary

In conclusion, Gitk is a graphical interface wrapper for git log. Gitk is incredibly powerful for visualizing and exploring the history of a repository. Gitk is also a helpful tool for learning the internals of Git.

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