Is there a command to do just that: if a package is already installed, update it, otherwise install the latest version
For now I'm doing two commands:
yum install mypackage
yum update mypackage
Maybe there's a more efficient way?
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At least for me, yum is bright enough that if I tell it to install something which is already installed, and for which an update is available, it will just apply the update instead. E.g.:
[root@risby ~]# rpm -qa|grep openvpn
openvpn-2.2.2-7.fc17.x86_64
openvpn is installed.
[root@risby ~]# yum update
[...]
--> Running transaction check
---> Package openvpn.x86_64 0:2.2.2-7.fc17 will be updated
---> Package openvpn.x86_64 0:2.3.1-2.fc17 will be an update
An update is available.
[root@risby ~]# yum install openvpn
[...]
--> Running transaction check
---> Package openvpn.x86_64 0:2.2.2-7.fc17 will be updated
---> Package openvpn.x86_64 0:2.3.1-2.fc17 will be an update
yum install does the right thing anyway. yum version is 3.4.3, by the way.
MadHatter
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I observed this behavior of yum a few times, but since I haven't found it documented anywhere, I wonder if I can rely on it. – John Smith Optional May 16 '13 at 15:24
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Using yum 3.2.29-60 here and it doesn't seem to work. – proteantech Jul 10 '19 at 14:04
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@proteantech Try something a little less ancient. That version of yum is from 2009; while this question and yum version is from 2013. – Michael Hampton Jul 10 '19 at 14:58