RPM表示红帽包管理器，是英文Red Hat Packet Manager的缩写。它是一个基于Red Hat的操作系统(RHEL/CentOS/Scientific Linux)的包管理系统，RPM也可以移植到其他操作系统上，如IBM的AIX和Novell的Netware。

查看rpm包的安装日期和时间

列出所有rpm包的日期和时间信息

[root@localhost ~]# rpm -qa --last

查看某个rpm包的信息

查看某个rpm包的日期和时间

[root@localhost ~]# rpm -q --last basesystem-10.0-4.el6.noarch
basesystem-10.0-4.el6.noarch                  Friday 21 February 2014 07:09:30 PM IST
[root@localhost ~]#

查看某个rpm包的详细信息

[root@localhost ~]# rpm -qi libgcc-4.8.5-39.el7.x86_64
Name        : libgcc
Version     : 4.8.5
Release     : 39.el7
Architecture: x86_64
Install Date: Wed 30 Sep 2020 01:39:36 PM EDT
Group       : System Environment/Libraries
Size        : 179328
License     : GPLv3+ and GPLv3+ with exceptions and GPLv2+ with exceptions and LGPLv2+ and BSD
Signature   : RSA/SHA256, Thu 22 Aug 2019 05:29:34 PM EDT, Key ID 24c6a8a7f4a80eb5
Source RPM  : gcc-4.8.5-39.el7.src.rpm
Build Date  : Tue 06 Aug 2019 01:15:38 PM EDT
Build Host  : x86-02.bsys.centos.org
Relocations : (not relocatable)
Packager    : CentOS BuildSystem <http://bugs.centos.org>
Vendor      : CentOS
URL         : http://gcc.gnu.org
Summary     : GCC version 4.8 shared support library
Description :
This package contains GCC shared support library which is needed
e.g. for exception handling support.