linux md5sum 生成文件的md5摘要信息并进行检验

ECS信息

• 规格：2vCPUs | 4GiB | kc1.large.2
• 镜像：openEuler 20.03 64bit with ARM | 公共镜像

linux md5sum 生成文件的md5摘要信息并进行检验

md5sum 校验单个文件

# md5sum tcpdump-4.9.3-3.oe1.aarch64.rpm 
5b65056852872b29c577f4ddc1014ac2  tcpdump-4.9.3-3.oe1.aarch64.rpm
# md5sum tcpdump-4.9.3-3.oe1.aarch64.rpm > tcpdump-4.9.3-3.oe1.aarch64.rpm.md5
# cat tcpdump-4.9.3-3.oe1.aarch64.rpm.md5 
5b65056852872b29c577f4ddc1014ac2  tcpdump-4.9.3-3.oe1.aarch64.rpm

# md5sum -c tcpdump-4.9.3-3.oe1.aarch64.rpm.md5
tcpdump-4.9.3-3.oe1.aarch64.rpm: OK

md5校验多个文件

# ll | grep rpm
-rw------- 1 root root  50K Mar 26  2020 CUnit-2.1.3-21.oe1.aarch64.rpm
-rw------- 1 root root 387K Mar 26  2020 tcpdump-4.9.3-3.oe1.aarch64.rpm

# md5sum *.rpm > rpm.md5
# cat rpm.md5 
b9d82dfd5150f3074161378f17559228  CUnit-2.1.3-21.oe1.aarch64.rpm
5b65056852872b29c577f4ddc1014ac2  tcpdump-4.9.3-3.oe1.aarch64.rpm

# md5sum -c rpm.md5 
CUnit-2.1.3-21.oe1.aarch64.rpm: OK
tcpdump-4.9.3-3.oe1.aarch64.rpm: OK

grep -v 过滤掉相关OK的内容，只剩下出现问题的部分

# cat rpm.md5 
b9d82dfd5150f3074161378f17559228  CUnit-2.1.3-21.oe1.aarch64.rpm
5b65056852872b29c577f4ddc1014ac2  tcpdump-4.9.3-3.oe1.aarch64.rpm
# md5sum --check rpm.md5 | grep -v OK
# vim rpm.md5
# cat rpm.md5 
b9d82dfd5150f3074161378f17559228  CUnit-2.1.3-21.oe1.aarch64.rpm
aaaaaaaaaaaaab29c577f4ddc1014ac2  tcpdump-4.9.3-3.oe1.aarch64.rpm

# md5sum --check rpm.md5
CUnit-2.1.3-21.oe1.aarch64.rpm: OK
tcpdump-4.9.3-3.oe1.aarch64.rpm: FAILED
md5sum: WARNING: 1 computed checksum did NOT match
# md5sum --check rpm.md5 | grep -v OK
md5sum: tcpdump-4.9.3-3.oe1.aarch64.rpm: FAILED
WARNING: 1 computed checksum did NOT match

学习资料

• 弹性云服务器 ECS
• openEuler-官网
• openEuler-B站
• openEuler-慕课
• openEuler-文档
• 鲲鹏社区

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