git: command not found

在使用git时，出现“git: command not found”的情况，于是使用yum安装：

[root@localhost ~]# yum install -y git
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: centos.ustc.edu.cn
* extras: centos.ustc.edu.cn
* updates: centos.ustc.edu.cn
Setting up Install Process
No package git available.
Nothing to do

需要先添加EPEL(Extra Packages for Enterprise Linux) repository：
[root@localhost ~]# rpm -Uvh http://download.fedora.redhat.com/pub/epel/5/i386/epel-release-5-4.noarch.rpm
Retrieving http://download.fedora.redhat.com/pub/epel/5/i386/epel-release-5-4.noarch.rpm
warning: /var/tmp/rpm-xfer.GsvZWW: Header V3 DSA signature: NOKEY, key ID 217521f6
Preparing... ########################################### [100%]
1:epel-release ########################################### [100%]

现在可以使用yum安装了
[root@localhost ~]# yum install -y git
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: centos.ustc.edu.cn
* epel: mirrors.ustc.edu.cn
* extras: centos.ustc.edu.cn
* updates: centos.ustc.edu.cn
epel | 3.4 kB 00:00  
epel/primary_db | 3.1 MB 00:01  
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package git.i386 0:1.7.4.1-1.el5 set to be updated
--> Processing Dependency: perl-Git = 1.7.4.1-1.el5 for package: git
--> Processing Dependency: perl(Error) for package: git
--> Processing Dependency: perl(Git) for package: git
--> Running transaction check
---> Package perl-Error.noarch 1:0.17010-1.el5 set to be updated
---> Package perl-Git.i386 0:1.7.4.1-1.el5 set to be updated
--> Finished Dependency Resolution

Dependencies Resolved

========================================================================================================
Package Arch Version Repository Size
========================================================================================================
Installing:
git i386 1.7.4.1-1.el5 epel 4.5 M
Installing for dependencies:
perl-Error noarch 1:0.17010-1.el5 epel 26 k
perl-Git i386 1.7.4.1-1.el5 epel 28 k

Transaction Summary
========================================================================================================
Install 3 Package(s)
Upgrade 0 Package(s)

Total download size: 4.5 M
Downloading Packages:
(1/3): perl-Error-0.17010-1.el5.noarch.rpm | 26 kB 00:00  
(2/3): perl-Git-1.7.4.1-1.el5.i386.rpm | 28 kB 00:00  
(3/3): git-1.7.4.1-1.el5.i386.rpm | 4.5 MB 00:02  
--------------------------------------------------------------------------------------------------------
Total 1.4 MB/s | 4.5 MB 00:03  
warning: rpmts_HdrFromFdno: Header V3 DSA signature: NOKEY, key ID 217521f6
epel/gpgkey | 1.7 kB 00:00  
Importing GPG key 0x217521F6 "Fedora EPEL <epel@fedoraproject.org>" from /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL
Running rpm_check_debug
Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
Installing : perl-Error 1/3
Installing : perl-Git 2/3
Installing : git 3/3

Installed:
git.i386 0:1.7.4.1-1.el5

Dependency Installed:
perl-Error.noarch 1:0.17010-1.el5 perl-Git.i386 0:1.7.4.1-1.el5

Complete!

[root@localhost ~]#

http://blog.csdn.net/wangyutian2011/article/details/44056783