Centos
“yum updateinfo”和“yum check-update”的輸出不一樣
為什麼我在執行時得到一個空列表
yum updateinfo：$ yum updateinfo Loaded plugins: fastestmirror, ovl Loading mirror speeds from cached hostfile * base: centos.mirror.ate.info * epel: fedora.tu-chemnitz.de * extras: centos.mirror.ate.info * updates: ftp.rezopole.net updateinfo summary done但是，在執行時
yum check-update，我看到了一些可用的更新：[root@instance /]# yum check-update Loaded plugins: fastestmirror, ovl Loading mirror speeds from cached hostfile epel/x86_64/metalink | 28 kB 00:00:00 * base: centos.crazyfrogs.org * epel: mirror.karneval.cz * extras: centos.crazyfrogs.org * updates: mir01.syntis.net base | 3.6 kB 00:00:00 epel | 5.4 kB 00:00:00 extras | 2.9 kB 00:00:00 updates | 2.9 kB 00:00:00 (1/7): base/7/x86_64/group_gz | 165 kB 00:00:00 (2/7): epel/x86_64/group_gz | 90 kB 00:00:00 (3/7): extras/7/x86_64/primary_db | 153 kB 00:00:00 (4/7): epel/x86_64/primary_db | 6.9 MB 00:00:00 (5/7): base/7/x86_64/primary_db | 6.0 MB 00:00:03 (6/7): epel/x86_64/updateinfo | 1.0 MB 00:00:04 (7/7): updates/7/x86_64/primary_db | 5.8 MB 00:00:03 nss.x86_64 3.44.0-7.el7_7 updates nss-softokn.x86_64 3.44.0-8.el7_7 updates nss-softokn-freebl.x86_64 3.44.0-8.el7_7 updates nss-sysinit.x86_64 3.44.0-7.el7_7 updates nss-tools.x86_64 3.44.0-7.el7_7 updates nss-util.x86_64 3.44.0-4.el7_7 updates
yum updateinfo列出可以更新的軟體包的建議。我的範例輸出是：Loaded plugins: fastestmirror, ovl Loading mirror speeds from cached hostfile * base: centos.mirror.ate.info * epel: fedora.tu-chemnitz.de * extras: centos.mirror.ate.info * updates: ftp.rezopole.net Updates Information Summary: available 3 Security notice(s) 1 Important Security notice(s) 2 Moderate Security notice(s) 1 Bugfix notice(s) updateinfo summary done另一方面，
yum check-update列出可用於您的軟體包的所有更新。這些通常僅在您需要額外功能時才升級到，而不是出於安全原因。