如何知道我的BIOS版本的发布日期？
使用简单的单个命令直接从终端仿真器检查BIOS版本的发布日期非常简单。 那怎么办呢？
轻松使用命令dmidecode。
首先安装，如果你还没有：
sudo apt-get install dmidecode 现在检查BIOS的发布日期，轻松运行命令：
sudo dmidecode --string bios-release-date
输出看起来像（我的输出）：
07/23/2012
dmidecode确实是最简单的方法，但应谨慎使用。 正如man dmidecode末尾所提到的：
BUGS More often than not, information contained in the DMI tables is inaccu‐ rate, incomplete or simply wrong.
因此，作者自己警告用户返回的信息可能是垃圾。
另一个有助于获取BIOS信息的程序（虽然不是发布日期）是biosdecode ，它曾经是dmidecode一部分，但现在已经与它分离了。 输出示例：
# biosdecode 2.12 SMBIOS 2.6 present. Structure Table Length: 3650 bytes Structure Table Address: 0x000F2430 Number Of Structures: 67 Maximum Structure Size: 253 bytes PCI Interrupt Routing 1.0 present. Router ID: 00:1f.0 Exclusive IRQs: None Compatible Router: 8086:2912 Slot Entry 1: ID 00:01, on-board Slot Entry 2: ID 00:02, on-board Slot Entry 3: ID 00:1f, on-board Slot Entry 4: ID 00:1d, on-board Slot Entry 5: ID 00:1a, on-board Slot Entry 6: ID 00:1b, on-board Slot Entry 7: ID 00:1c, on-board Slot Entry 8: ID 00:19, on-board Slot Entry 9: ID 02:00, slot number 33 Slot Entry 10: ID 03:00, slot number 34 Slot Entry 11: ID 04:00, slot number 8 Slot Entry 12: ID 06:00, slot number 9 Slot Entry 13: ID fe:00, slot number 10 Slot Entry 14: ID fe:00, slot number 16 Slot Entry 15: ID fe:00, slot number 17 Slot Entry 16: ID 00:16, on-board Slot Entry 17: ID 0c:03, slot number 4 Slot Entry 18: ID 0c:02, slot number 3 Slot Entry 19: ID 0c:00, slot number 1 Slot Entry 20: ID 0c:01, slot number 2 Slot Entry 21: ID 0c:05, slot number 2 Slot Entry 22: ID 00:03, on-board Slot Entry 23: ID 00:04, on-board Slot Entry 24: ID 00:05, on-board Slot Entry 25: ID 00:06, on-board Slot Entry 26: ID fe:00, slot number 1 Slot Entry 27: ID fe:00, slot number 3 Slot Entry 28: ID 00:00, on-board PNP BIOS 1.0 present. Event Notification: Polling Event Notification Flag Address: 0x000004B4 Real Mode 16-bit Code Address: F000:E2F1 Real Mode 16-bit Data Address: 0040:0000 16-bit Protected Mode Code Address: 0x0001D2F6 16-bit Protected Mode Data Address: 0x00000400 ACPI 2.0 present. OEM Identifier: DELL RSD Table 32-bit Address: 0xCF67DF18 XSD Table 64-bit Address: 0x00000000CF67DE18 BIOS32 Service Directory present. Revision: 0 Calling Interface Address: 0x000FFA10