var 下子目录所属用户组

mcbird@mc-pc:/var$ ll
total 56
drwxr-xr-x 14 root root     4096  9月 16 19:34 ./
drwxr-xr-x 24 root root     4096  9月  3 21:54 ../
drwxr-xr-x  2 root root     4096  9月 16 19:31 backups/
drwxr-xr-x 18 root root     4096  9月 16 19:34 cache/
drwxrwsrwt  2 root whoopsie 4096  9月 15 22:43 crash/
drwxr-xr-x 70 root root     4096  9月 16 19:34 lib/
drwxrwsr-x  2 root staff    4096  4月 11 06:12 local/
lrwxrwxrwx  1 root root        9  8月 31 11:11 lock -> /run/lock/
drwxrwxr-x 15 root syslog   4096  9月 16 19:34 log/
drwxrwsr-x  2 root mail     4096  4月 17 09:21 mail/
drwxrwsrwt  2 root whoopsie 4096  4月 17 09:26 metrics/
drwxr-xr-x  2 root root     4096  4月 17 09:21 opt/
lrwxrwxrwx  1 root root        4  8月 31 11:11 run -> /run/
drwxr-xr-x  9 root root     4096  4月 17 09:24 spool/
drwxrwxrwt  2 root root     4096  9月 16 19:38 tmp/
drwxr-xr-x  3 root root     4096  9月 16 19:34 www/