?????????????????????????????е??????????Щ?????????????????????????????????????????
????· ?????????????????????
????[root@DB-Server ~]#tree   #?????
????[root@DB-Server ~]#tree  /home/oracle/kerry
????· ?????????????????С??
????[root@DB-Server ~]#du -sh /u01
????[root@DB-Server ~]#du -sh
????· ?????????????????д?С
????[root@DB-Server ~]#du -sh *
????· ????????????????????
????[root@DB-Server ~] find /home/oracle -name "awr*" -print
????· ????????μ???????????????
????[root@DB-Server ~]# ls -lrt | grep -v 'total' | wc -l
????· ????????μ??????????????????????
????[root@DB-Server ~]#ls -l | grep "^-" | wc -l
????· ????????μ????????????????????
????[root@DB-Server ~]#ls -l * | grep "^-" | wc –l
????· ??????г??????????μ???????
????[root@DB-Server ~]# ls -l | grep "^d" | wc -l
????· ??г??????????????
????[root@DB-Server ~]# ls -F | grep /$ #??????????????????????????
????· ???????????????
????[root@DB-Server ~]# cat /etc/passwd | awk -F ":" '{print $1}'
????· ????????N??????
????[root@DB-Server ~]# head -5 /etc/passwd
????· ????????N??????
????[root@DB-Server ~]# tail -5 /etc/passwd
????· ??????е??????????
????[root@DB-Server ~]# sed -n '5??10p' /etc/passwd
????· ?????????????????????????? ??????????????????????????
[root@DB-Server ~]# touch test
[root@DB-Server ~]# stat test
File: `test'
Size: 0               Blocks: 0          IO Block: 4096   regular empty file
Device: 802h/2050d      Inode: 4196044     Links: 1
Access: (0644/-rw-r--r--)  Uid: (    0/    root)   Gid: (    0/    root)
Access: 2016-07-25 15:53:07.000000000 +0800
Modify: 2016-07-25 15:53:07.000000000 +0800
Change: 2016-07-25 15:53:07.000000000 +0800
[root@DB-Server ~]#

????Access ????????
????Modify ????????
????Change ???????