[CentOS] Download and build the specified version of Git

I made a script because I forget it every time.

Conclusion

We have released a program that allows you to install Git by specifying the version name as shown below. Repository: Polarbear08/centos-git-installer

# ./installer.sh 2.29.2

See the README for details.

motivation

• Git sometimes announces vulnerabilities and prompts for updates, but the latest version is not available in the package manager
• You don't have to search every time for a way to build from source to get the latest version
• Maybe there is a similar repository if you look for it, but I want to practice shell scripting

Script content

installer.sh

#!/bin/bash

# verify input
VERSION=$1
if [[ $VERSION =~ [1-9]+\.[0-9]+\.[0-9] ]]; then
        GIT_DIR=git-$VERSION
        GIT_TAR=$GIT_DIR.tar.gz
        URL="https://mirrors.edge.kernel.org/pub/software/scm/git/$GIT_TAR"
else
        echo -e "Usage:\t $0 <VERSION>"
        echo -e "e.g.)\t $0 2.29.2"
        exit 1
fi

# install wget for downloading git
yum install -y wget

# confirm installation
wget -q --spider $URL
if [ $? = 0 ]; then
        echo "install git version $VERSION"
else
        echo "something seems wrong with URL: $URL"
        exit 1
fi

# install dependencies
yum install -y \
        curl-devel \
        expat-devel \
        gettext-devel \
        openssl-devel \
        perl-devel \
        zlib-devel \
        gcc \
        make

# download and install git
mkdir -p /usr/local/src
cd /usr/local/src
wget https://mirrors.edge.kernel.org/pub/software/scm/git/${GIT_TAR}
tar xf ${GIT_TAR}
rm -f ${GIT_TAR}

cd ${GIT_DIR}
make prefix=/usr/local all
make prefix=/usr/local install

# completion notice
git version > /dev/null  && echo "$(git version) was successfully installed"

I don't want to step on a strange error with the character code, so I only use ASCII characters.

reference

• Semantic Versioning 2.0.0 Contains regular expressions that identify version names according to semantic versioning. I didn't need such a rugged pattern this time, but I used it as a reference.
• Install Git This is the official document. It shows the dependencies needed to build git. gcc and make are not listed, but I needed them. Since I used the centos image of Docker Hub, the package that is normally included by default may not have been included.