1、测试数据
[root@centos7 test2]# ll -h
total 1.4G
-rw-r--r--. 1 root root 41M Apr 15 09:47 a.map
-rw-r--r--. 1 root root 204M Apr 15 09:47 a.ped
-rw-r--r--. 1 root root 61M Apr 15 09:48 b.map
-rw-r--r--. 1 root root 407M Apr 15 09:47 b.ped
-rw-r--r--. 1 root root 611M Apr 15 09:47 c.ped
-rw-r--r--. 1 root root 21M Apr 15 09:44 result.map
2、统计*.map文件的大小
[root@centos7 test2]# ls *.map | xargs du -ch
41M a.map
61M b.map
21M result.map
121M total
[root@centos7 test2]# ls *.map | xargs du -ch | tail -n 1
121M total
ped
[root@centos7 test2]# ls *.ped | xargs du -h
204M a.ped
407M b.ped
611M c.ped
[root@centos7 test2]# ls *.ped | xargs du -ch
204M a.ped
407M b.ped
611M c.ped
1.2G total
[root@centos7 test2]# ls *.ped | xargs du -ch | tail -n 1
1.2G total