2019独角兽企业重金招聘Python工程师标准>>> 
1、查看是否安装了git
rpm -qa|grep git[root@hp-hp summergao]# yum –y install git
Loaded plugins: fastestmirror, langpacks
[root@hp-hp summergao]# rpm -qa|grep git
lm_sensors-libs-3.4.0-6.20160601gitf9185e5.el7.x86_64
hyperv-daemons-0-0.34.20180415git.el7.x86_64
hypervvssd-0-0.34.20180415git.el7.x86_64
libglvnd-egl-1.0.1-0.8.git5baa1e5.el7.x86_64
hypervkvpd-0-0.34.20180415git.el7.x86_64
libglvnd-glx-1.0.1-0.8.git5baa1e5.el7.x86_64
hyperv-daemons-license-0-0.34.20180415git.el7.noarch
python-dns-1.12.0-4.20150617git465785f.el7.noarch
libglvnd-gles-1.0.1-0.8.git5baa1e5.el7.x86_64
lldpad-1.0.1-3.git036e314.el7.x86_64
ipxe-roms-qemu-20170123-1.git4e85b27.el7_4.1.noarch
hypervfcopyd-0-0.34.20180415git.el7.x86_64
xdg-utils-1.1.0-0.17.20120809git.el7.noarch
net-tools-2.0-0.24.20131004git.el7.x86_64
linux-firmware-20180911-69.git85c5d90.el7.noarch
numad-0.5-18.20150602git.el7.x86_64
taglib-1.8-7.20130218git.el7.x86_64
lockdev-1.0.4-0.13.20111007git.el7.x86_64
libglvnd-1.0.1-0.8.git5baa1e5.el7.x86_64
crontabs-1.11-6.20121102git.el7.noarch
以上内容说明没有安装
若已经安装，需要先卸载。卸载命令如下：
rpm -e --nodeps git 或者 rpm -e git2、安装git
yum -y install git[root@hp-hp summergao]# yum install git
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
* base: mirrors.aliyun.com
* extras: mirror01.idc.hinet.net
* updates: ap.stykers.moe
base | 3.6 kB 00:00
extras | 3.4 kB 00:00
teamviewer | 2.5 kB 00:00
updates | 3.4 kB 00:00
Resolving Dependencies
--> Running transaction check
---> Package git.x86_64 0:1.8.3.1-20.el7 will be installed
--> Processing Dependency: perl-Git = 1.8.3.1-20.el7 for package: git-1.8.3.1-20.el7.x86_64
--> Processing Dependency: perl(Term::ReadKey) for package: git-1.8.3.1-20.el7.x86_64
--> Processing Dependency: perl(Git) for package: git-1.8.3.1-20.el7.x86_64
--> Processing Dependency: perl(Error) for package: git-1.8.3.1-20.el7.x86_64
--> Running transaction check
---> Package perl-Error.noarch 1:0.17020-2.el7 will be installed
---> Package perl-Git.noarch 0:1.8.3.1-20.el7 will be installed
---> Package perl-TermReadKey.x86_64 0:2.30-20.el7 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
================================================================================
Package Arch Version Repository Size
================================================================================
Installing:
git x86_64 1.8.3.1-20.el7 updates 4.4 M
Installing for dependencies:
perl-Error noarch 1:0.17020-2.el7 base 32 k
perl-Git noarch 1.8.3.1-20.el7 updates 55 k
perl-TermReadKey x86_64 2.30-20.el7 base 31 k
Transaction Summary
================================================================================
Install 1 Package (+3 Dependent packages)
Total download size: 4.5 M
Installed size: 22 M
Is this ok [y/d/N]: y
Downloading packages:
(1/4): perl-Error-0.17020-2.el7.noarch.rpm | 32 kB 00:00
(2/4): perl-TermReadKey-2.30-20.el7.x86_64.rpm | 31 kB 00:00
(3/4): perl-Git-1.8.3.1-20.el7.noarch.rpm | 55 kB 00:01
(4/4): git-1.8.3.1-20.el7.x86_64.rpm | 4.4 MB 00:04
--------------------------------------------------------------------------------
Total 1.0 MB/s | 4.5 MB 00:04
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : 1:perl-Error-0.17020-2.el7.noarch 1/4
Installing : perl-TermReadKey-2.30-20.el7.x86_64 2/4
Installing : git-1.8.3.1-20.el7.x86_64 3/4
Installing : perl-Git-1.8.3.1-20.el7.noarch 4/4
Verifying : perl-Git-1.8.3.1-20.el7.noarch 1/4
Verifying : 1:perl-Error-0.17020-2.el7.noarch 2/4
Verifying : git-1.8.3.1-20.el7.x86_64 3/4
Verifying : perl-TermReadKey-2.30-20.el7.x86_64 4/4
Installed:
git.x86_64 0:1.8.3.1-20.el7
Dependency Installed:
perl-Error.noarch 1:0.17020-2.el7 perl-Git.noarch 0:1.8.3.1-20.el7
perl-TermReadKey.x86_64 0:2.30-20.el7
Complete!
以上说明安装成功
3、再使用 rpm -qa|grep git 来查看是否已经安装好了Git
rpm -qa|grep git [root@hp-hp summergao]# rpm -qa|grep git
git-1.8.3.1-20.el7.x86_64
lm_sensors-libs-3.4.0-6.20160601gitf9185e5.el7.x86_64
hyperv-daemons-0-0.34.20180415git.el7.x86_64
hypervvssd-0-0.34.20180415git.el7.x86_64
libglvnd-egl-1.0.1-0.8.git5baa1e5.el7.x86_64
hypervkvpd-0-0.34.20180415git.el7.x86_64
libglvnd-glx-1.0.1-0.8.git5baa1e5.el7.x86_64
hyperv-daemons-license-0-0.34.20180415git.el7.noarch
python-dns-1.12.0-4.20150617git465785f.el7.noarch
libglvnd-gles-1.0.1-0.8.git5baa1e5.el7.x86_64
lldpad-1.0.1-3.git036e314.el7.x86_64
ipxe-roms-qemu-20170123-1.git4e85b27.el7_4.1.noarch
hypervfcopyd-0-0.34.20180415git.el7.x86_64
xdg-utils-1.1.0-0.17.20120809git.el7.noarch
net-tools-2.0-0.24.20131004git.el7.x86_64
linux-firmware-20180911-69.git85c5d90.el7.noarch
numad-0.5-18.20150602git.el7.x86_64
taglib-1.8-7.20130218git.el7.x86_64
lockdev-1.0.4-0.13.20111007git.el7.x86_64
libglvnd-1.0.1-0.8.git5baa1e5.el7.x86_64
crontabs-1.11-6.20121102git.el7.noarch
[root@hp-hp summergao]# 4、创建Git仓库
mkdir six_git // 创建文件夹
useradd six //创建用户名并设置密码
passwd six //(系统会提示输入密码和再次密码)
groupadd git // 创建组
git init --bare //进入所创建的文件夹，初始化一个仓库
chown -R six:git /var/www/six_git/ // 赋权限5、 禁止shell登陆
出于安全考虑，git用户不允许登录shell，这可以通过编辑/etc/passwd文件完成。
找到类似下面的一行：
six:x:502:502::/home/six:/bin/bash
改为
six:x:502:502::/home/six:/usr/local/git/bin/git-shell
或者
six:x:502:502::/home/six:/usr/bin/git-shell
six:x:502:502::/home/six:/bin/falsegit用户可以正常通过ssh使用git，但无法登录shell，因为我们为git用户指定的git-shell每次一登录就自动退出。
参考：https://www.centos.bz/2018/03/centos7%E6%90%AD%E5%BB%BAgit%E5%8F%8A%E5%AE%89%E8%A3%85%E4%BD%BF%E7%94%A8/