Background

Tonight, I read the most recent blog article on GitHub’s blog.¹ It says that the version of Git Bash on my M$ Win* 7 is unsafe. Moreover, it is claimed that GNU/Linux computers aren’t affected since they’re case sensitive. At first, I believed that I didn’t need to upgrade my Git. However, after I clicked the link for the announcement of Git v2.2.1, I checked the version of the Git on Ubuntu, and found out that it wasn’t the newest one. The following paragraph convinced me to get this update on my Ubuntu desktop.

Even though the issue may not affect Linux users, if you are a hosting service whose users may fetch from your service to Windows or Mac OS X machines, you are strongly encouraged to update to protect such users who use existing versions of Git.

Solution

Add the PPA for Git.

$ sudo add-apt-repository ppa:git-core/ppa
[sudo] password for owner:
 The most current stable version of Git for Ubuntu.

For release candidates, go to https://launchpad.net/~git-core/+archive/candidate .
  More info: https://launchpad.net/~git-core/+archive/ubuntu/ppa
Press [ENTER] to continue or Ctrl-C to cancel adding it

gpg: keyring `/tmp/tmplo3t2ozz/secring.gpg' created
gpg: keyring `/tmp/tmplo3t2ozz/pubring.gpg' created
gpg: requesting key E1DF1F24 from hkp server keyserver.ubuntu.com
gpg: /tmp/tmplo3t2ozz/trustdb.gpg: trustdb created
gpg: key E1DF1F24: public key "Launchpad PPA for Ubuntu Git Maintainers" imported
gpg: Total number processed: 1
gpg:               imported: 1  (RSA: 1)
OK

Update the package information and upgrade the file.

$ sudo apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following packages will be upgraded:
  git git-core git-man gitk
4 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 5,604 kB of archives.
After this operation, 1,528 kB of additional disk space will be used.
Do you want to continue? [Y/n] Y
Get:1 http://ppa.launchpad.net/git-core/ppa/ubuntu/ trusty/main gitk all 1:2.2.1-0ppa2~ubuntu14.04.1 [704 kB]
Get:2 http://ppa.launchpad.net/git-core/ppa/ubuntu/ trusty/main git i386 1:2.2.1-0ppa2~ubuntu14.04.1 [3,601 kB]
Get:3 http://ppa.launchpad.net/git-core/ppa/ubuntu/ trusty/main git-man all 1:2.2.1-0ppa2~ubuntu14.04.1 [1,298 kB]
Get:4 http://ppa.launchpad.net/git-core/ppa/ubuntu/ trusty/main git-core all 1:2.2.1-0ppa2~ubuntu14.04.1 [1,412 B]
Fetched 5,604 kB in 23s (240 kB/s)
(Reading database ... 380182 files and directories currently installed.)
Preparing to unpack .../gitk_1%3a2.2.1-0ppa2~ubuntu14.04.1_all.deb ...
Unpacking gitk (1:2.2.1-0ppa2~ubuntu14.04.1) over (1:2.0.4-0ppa1~ubuntu12.04.1) ...
Preparing to unpack .../git_1%3a2.2.1-0ppa2~ubuntu14.04.1_i386.deb ...
Unpacking git (1:2.2.1-0ppa2~ubuntu14.04.1) over (1:2.0.4-0ppa1~ubuntu12.04.1) ...
Preparing to unpack .../git-man_1%3a2.2.1-0ppa2~ubuntu14.04.1_all.deb ...
Unpacking git-man (1:2.2.1-0ppa2~ubuntu14.04.1) over (1:2.0.4-0ppa1~ubuntu12.04.1) ...
Preparing to unpack .../git-core_1%3a2.2.1-0ppa2~ubuntu14.04.1_all.deb ...
Unpacking git-core (1:2.2.1-0ppa2~ubuntu14.04.1) over (1:2.0.4-0ppa1~ubuntu12.04.1) ...
Processing triggers for man-db (2.6.7.1-1ubuntu1) ...
Setting up git-man (1:2.2.1-0ppa2~ubuntu14.04.1) ...
Setting up git (1:2.2.1-0ppa2~ubuntu14.04.1) ...
Setting up gitk (1:2.2.1-0ppa2~ubuntu14.04.1) ...
Setting up git-core (1:2.2.1-0ppa2~ubuntu14.04.1) ...

Now, I’ve the newest stable release of Git.

$ git --version
git version 2.2.1

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