把本地仓库工程上传到github上和从gitbu同步工程到本地

1、在本地产生秘钥和公钥

[root@jacky git_project]# ssh-keygen -t rsa -C "jacky-lulu@1073740572@qq.com"
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa): /root/.ssh/id_rsa      #在这里输入rsa秘钥所在的目录
Enter passphrase (empty for no passphrase):                                     #输入jacky-lulu账号的密码
Enter same passphrase again:                                                    #再次输入jacky-lulu账号的密码
Your identification has been saved in /root/.ssh/id_rsa.                        #保存秘钥的文件（id_rsa）
Your public key has been saved in /root/.ssh/id_rsa.pub.                        #保存公钥的文件（id_rsa.pub）

2、查看公钥

[root@jacky /]# cd /root
[root@jacky ~]# ls -al
总用量
dr-xr-x---.   root root   12月  : .
dr-xr-xr-x.  root root   12月  : ..
-rw-------.   root root   10月   : anaconda-ks.cfg
-rw-------.   root root  12月  : .bash_history
-rw-r--r--.   root root     5月    .bash_logout
-rw-r--r--.   root root    5月    .bash_profile
-rw-r--r--.   root root    9月    .bashrc
-rw-r--r--.   root root    9月    .cshrc
drwx------.   root root   10月   : .gconf
drwx------.   root root   10月   : .gconfd
-rw-r--r--.   root root     12月  : .gitconfig
-rw-r--r--.   root root  10月   : install.log
-rw-r--r--.   root root  10月   : install.log.syslog
-rw-------.   root root     12月  : .lesshst
-rw-------.   root root   12月  : .mysql_history
-rw-------.   root root     11月  : .mysql_secret
-rw-r--r--.   root root    11月   : .rediscli_history
drwx------.   root root   12月  : .ssh
-rw-r--r--.   root root    12月    .tcshrc
-rw-------.   root root   12月  : .viminfo
-rw-------.   root root     12月  : .xauthAy9Cwu
[root@jacky ~]# cd .ssh
[root@jacky .ssh]# ls -l
总用量
-rw-------.  root root  12月  : id_rsa
-rw-r--r--.  root root   12月  : id_rsa.pub
-rw-r--r--.  root root  12月  : known_hosts

[root@jacky .ssh]# cat id_rsa.pub
  ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAyzSZ+5GNn98KxUkEthl4dg8knuTb8znI/oyZ6kzuObZ7AoOd2T/fJVirHE7FKq0nw5zwUF1xez0F8SEgMzQJuXECmEo86DWaYY+Qhh7KSdw30E8g   GVMcJvTbMBbQx/tmb9NrjT44STe+sg6HbW8keFxS8VnpJJww26RhGaZzQz30lA55mNF7H7ELfG9pyApNs9iFZFWGf7T/OWQtDQ5v0quNoW3xqBfn0eMHYe0ebZGnIfLumBE8DZAuxOqK6FHw== j a  cky@1073740572@qq.com
[root@jacky .ssh]# ssh -T git@github.com

3、在github自己账号上输入公钥

4、验证连接github的jacky-lulu账号的公钥是否可行

ssh -T git@github.com
The authenticity of host 'github.com (192.30.253.112)' can't be established.
RSA key fingerprint is ::ac:a5:::2d:::1b::4d:eb:df:a6:.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'github.com,192.30.253.112' (RSA) to the list of known hosts.
Enter passphrase for key '/root/.ssh/id_rsa':
Hi jacky-lulu! You've successfully authenticated, but GitHub does not provide shell access.

5、进入的本地仓库的工程，建立与github的jacky-lulu的连接

[root@jacky home]# cd git_project
[root@jacky git_project]# ls -l
总用量
-rw-r--r--.  root root  12月  : .java
-rw-r--r--.  root root  12月  : .java
[root@jacky git_project]# ls
.java  .java
[root@jacky git_project]# git remote add origin https://github.com/jacky-lulu/git_project.git
[root@jacky git_project]# git remote
origin
[root@jacky git_project]# git remote -v
origin    https://github.com/jacky-lulu/git_project.git (fetch)       #从github下载工程的连接
origin    https://github.com/jacky-lulu/git_project.git (push)        #往github上传工程的连接

6、首先在github上创建一个新工程，名称叫git_project(与本地工程名称同名)

7、往github上push工程git_project

[root@jacky git_project]# git push -u origin master      #表示把当前master分支push到github上

(gnome-ssh-askpass:): Gtk-WARNING **: cannot open display:
error: unable to read askpass response from '/usr/libexec/openssh/gnome-ssh-askpass'
Username for 'https://github.com': jacky-lulu               #输入账号名称

(gnome-ssh-askpass:): Gtk-WARNING **: cannot open display:
error: unable to read askpass response from '/usr/libexec/openssh/gnome-ssh-askpass'
Password for 'https://jacky-lulu@github.com':               #输入密码
对象计数中: , 完成.
压缩对象中: % (/), 完成.
写入对象中: % (/), 2.02 KiB |  bytes/s, 完成.
Total  (delta ), reused  (delta )
remote: Resolving deltas: % (/), done.
To https://github.com/jacky-lulu/git_project.git
 * [new branch]      master -> master
分支 master 设置为跟踪来自 origin 的远程分支 master。

8、故意在github上修改工程git_project工程的2.java文件在同步到本地

[root@jacky git_project]# git fetch origin    #把gitgub远端仓库同步到缓冲区
remote: Counting objects: , done.
remote: Compressing objects: % (/), done.
remote: Total  (delta ), reused  (delta ), pack-reused
展开对象中: % (/), 完成.
来自 https://github.com/jacky-lulu/git_project
   c1f3cea..0c2df23  master     -> origin/master
[root@jacky git_project]# ls
.java  .java
[root@jacky git_project]# cat .java
master
master
master
branch jacky1
master jacky222
branch jacky222222222

[root@jacky git_project]# git merge origin/master    #把缓冲区的合并到本地库的master分支上
更新 c1f3cea..0c2df23
Fast-forward
 .java |  +-
  file changed,  insertion(+),  deletion(-)
[root@jacky git_project]# cat .java
master
master
master
branch jacky1
master jacky222
branch jacky222222222
远程仓库修改内容22222222222222222222222222222222222222222222    #同步成功