add git update

README.md

@@ -186,6 +186,7 @@
 	- [git ssh](src/git/git_ssh.md) git ssh配置
 	- [fork sync](src/git/fork_sync.md) fork仓库与原仓同步
 	- [Github](src/git/github.md) Github clone慢配置
+	- [git update](src/git/update.md) git升级
 12. [javascript](src/javascript/README.md "javascript")
 	- [json convert](src/javascript/json.md)
 	- [flexible](src/javascript/flexible.md)

src/git/README.md

@@ -5,6 +5,7 @@
 - [git ssh](git_ssh.md) git ssh配置
 - [fork sync](fork_sync.md) fork仓库与原仓同步
 - [Github](github.md) Github clone慢配置
+- [Git update](update.md) git升级
 - 删除远端仓库的文件
 
 		git rm --cached "/path/filename" //不物理删除，仅将该文件从缓存中删除，再commit push即可

src/git/update.md

@@ -0,0 +1,53 @@
+## git update  git版本更新
+- 在服务器上直接git clone项目的版本库的时候报401错误
+	错误如下：：error: The requested URL returned error: 401 Unauthorized while accessing
+	原因：git 版本过低
+- 查看git版本
+
+        # git --version
+        git version 1.7.1
+- 升级git
+	- 更新yum
+
+    		yum update
+	- 安装依赖包
+
+    		yum install curl-devel expat-devel gettext-devel openssl-devel zlib-devel gcc perl-ExtUtils-MakeMaker
+	- 下载git源码包
+
+    		wget https://github.com/git/git/archive/v2.18.0.tar.gz
+    - 解压、安装
+
+    		# tar -zxvf v2.18.0.tar.gz
+            # whereis git
+            git: /usr/bin/git /usr/share/man/man1/git.1.gz
+            # cd git-2.18.0/
+            # ./configure --prefix=/usr/local --with-iconv=/usr/local/libiconv
+            # make && make install
+- 验证版本号
+
+        # git --version
+        git version 2.18.0
+- 解决安装时libiconv报错
+	- 报错信息
+
+            LINK git-credential-store
+            libgit.a(utf8.o): In function `reencode_string_iconv':
+            /usr/src/git-2.8.3/utf8.c:463: undefined reference to `libiconv'
+            libgit.a(utf8.o): In function `reencode_string_len':
+            /usr/src/git-2.8.3/utf8.c:502: undefined reference to `libiconv_open'
+            /usr/src/git-2.8.3/utf8.c:521: undefined reference to `libiconv_close'
+            /usr/src/git-2.8.3/utf8.c:515: undefined reference to `libiconv_open'
+            collect2: ld returned 1 exit status
+            make: *** [git-credential-store] Error 1
+    - 安装libiconv
+     
+			# cd /usr/local/src
+			# wget http://ftp.gnu.org/pub/gnu/libiconv/libiconv-1.14.tar.gz
+			# tar -zxvf libiconv-1.14.tar.gz
+			# cd libiconv-1.14
+			# ./configure --prefix=/usr/local/libiconv  &&  make  && make install
+    - 创建一个软链接到/usr/lib
+      
+			# ln -s /usr/local/lib/libiconv.so /usr/lib
+			# ln -s /usr/local/lib/libiconv.so.2 /usr/lib