Gitlab quick install

yum install -y openssh-clients postfix cronie policycoreutils-python

cat << EOF > /etc/yum.repos.d/ansible-ce.repo
[gitlab-ce]
name=Gitlab CE Repository
baseurl=https://mirrors.tuna.tsinghua.edu.cn/gitlab-ce/yum/el\$releasever/
gpgcheck=0
enabled=1
EOF

yum makecache
yum install -y ansible-ce
wget https://mirrors.tuna.tsinghua.edu.cn/gitlab-ce/yum/el7/gitlab-ce-12.4.2-ce.0.el7.x86_64.rpm
rpm -ivh

cat << EOF > /etc/ansible/ansible.rb
external_url "http://localhost"
gitlab_rails['smtp_enable'] = true
gitlab_rails['smtp_address'] = "{#smtp_address#}"
gitlab_rails['smtp_port'] = 465
gitlab_rails['smtp_user_name'] = "yuchen.w1999@gmail.com"
gitlab_rails['smtp_password'] = "ptbdisblmypqbdic"     ##this is email smtp code
gitlab_rails['smtp_domain'] = "{#smtp_domain#}"
gitlab_rails['smtp_authentication'] = "login"
gitlab_rails['smtp_enable_starttls_auto'] = true
gitlab_rails['smtp_tls'] = true
user['git_user_email'] = "yuchen.w1999@gmail.com"
gitlab_rails['gitlab_email_from'] = 'yuchen.w1999@gmail.com'
nginx['listen_port'] = 8081
EOF
Notify.test_email('yuchen.w1999@gmail.com','email title','email content').deliver_now ## test email service
ansible-ctl reconfigure
ansible-ctl start

# Staging changes:
git add test.txt

# Committing to the repository:
git commit -m 'v1'

# Viewing commit history:
git log

# Rolling back to a previous version:
git reset --hard HEAD^
git reset --hard <Hashcode>

# Deleting and restoring a file that was staged:
git reset testfile
git checkout -- testfile

# Creating a branch:
git checkout -b dev

# Switching branches:
git checkout master

# Merging branches:
git merge dev

# Setting a tracking branch:
git branch --set-upstream-to=<destination_branch> <local_branch>

# Pulling files from the remote git directory:
git clone root@192.168.122.128:/git_user/

# Setting the remote repository name to origin:
git remote add origin https://github.com/repository.git