linux，Centos7,yum安装的curl无法正常使用

[root@centos ~]# yum -y install curl
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
Package curl-7.29.0-57.el7_8.1.x86_64 already installed and latest version
Nothing to do
[root@centos ~]# rpm -qa|grep curl
python-pycurl-7.19.0-19.el7.x86_64
libcurl-7.29.0-57.el7_8.1.x86_64
curl-7.29.0-57.el7_8.1.x86_64
[root@centos ~]# curl --version
-bash: curl: command not found

使用yum安装curl时，提示已经安装，但是curl相关命令无法使用，使用rpm查看，确认curl已经安装。

解决：卸载curl重新安装

[root@centos ~]# rpm -e --nodeps curl
warning: file /usr/bin/curl: remove failed: No such file or directory

[root@centos ~]# yum remove curl
Loaded plugins: fastestmirror, langpacks
No Match for argument: curl
No Packages marked for removal

[root@centos ~]# rpm -qa|grep curl
python-pycurl-7.19.0-19.el7.x86_64
libcurl-7.29.0-57.el7_8.1.x86_64

[root@centos ~]# yum -y install curl
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
Resolving Dependencies
--> Running transaction check
---> Package curl.x86_64 0:7.29.0-57.el7_8.1 will be installed
--> Finished Dependency Resolution

Dependencies Resolved
============================================================================================================================================
 Package                     Arch                          Version                                     Repository                      Size
============================================================================================================================================
Installing:
 curl                        x86_64                        7.29.0-57.el7_8.1                           updates                        271 k

Transaction Summary
============================================================================================================================================
Install  1 Package

Total download size: 271 k
Installed size: 528 k
Downloading packages:
curl-7.29.0-57.el7_8.1.x86_64.rpm                                                                                    | 271 kB  00:00:00     
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Warning: RPMDB altered outside of yum.
** Found 5 pre-existing rpmdb problem(s), 'yum check' output follows:
abrt-addon-kerneloops-2.1.11-57.el7.centos.x86_64 has missing requires of curl
abrt-addon-xorg-2.1.11-57.el7.centos.x86_64 has missing requires of curl
2:postfix-2.10.1-9.el7.x86_64 has missing requires of libmysqlclient.so.18()(64bit)
2:postfix-2.10.1-9.el7.x86_64 has missing requires of libmysqlclient.so.18(libmysqlclient_18)(64bit)
rpm-4.11.3-43.el7.x86_64 has missing requires of curl
  Installing : curl-7.29.0-57.el7_8.1.x86_64                                                                                            1/1 
  Verifying  : curl-7.29.0-57.el7_8.1.x86_64                                                                                            1/1 
Installed:
  curl.x86_64 0:7.29.0-57.el7_8.1                                                                                                           
Complete!


[root@centos ~]# curl --version
curl 7.29.0 (x86_64-redhat-linux-gnu) libcurl/7.29.0 NSS/3.44 zlib/1.2.7 libidn/1.28 libssh2/1.8.0
Protocols: dict file ftp ftps gopher http https imap imaps ldap ldaps pop3 pop3s rtsp scp sftp smtp smtps telnet tftp 
Features: AsynchDNS GSS-Negotiate IDN IPv6 Largefile NTLM NTLM_WB SSL libz unix-sockets 
[root@centos ~]#