1、请用命令查出ifconfig命令程序的绝对路径
[root@localhost ~]# which ifconfig
/usr/sbin/ifconfig
2、请用命令展示以下命令哪些是内部命令,哪些是外部命令?(cd \ pwd \ ls \ ifconfig \ du)
[root@localhost ~]# type cd
cd 是 shell 内嵌 (由此可见该命令cd为内部命令)
[root@localhost ~]# type pwd
pwd 是 shell 内嵌 (由此可见该命令pwd为内部命令)
[root@localhost ~]# type ls
ls 是 `ls --color=auto' 的别名
[root@localhost ~]# type du
du 已被哈希 (/usr/bin/du)
[root@localhost ~]# type ifconfig
ifconfig 是 /usr/sbin/ifconfig
2、请在/下创建目录abc
[root@localhost ~]# mkdir /abc
[root@localhost ~]# ls /
abc boot etc lib media opt root sbin sys usr zhangjiaqi
bin dev home lib64 mnt proc run srv tmp var
请在/下创建目录/liangjian/liyunlong/weiheshang/duanpeng
[root@localhost ~]# mkdir -pv /liangjian/liyunlong/weiheshang/duanpeng
mkdir: 已创建目录 "/liangjian"
mkdir: 已创建目录 "/liangjian/liyunlong"
mkdir: 已创建目录 "/liangjian/liyunlong/weiheshang"
mkdir: 已创建目录 "/liangjian/liyunlong/weiheshang/duanpeng"
请在/abc下一次创建1000个目录,名字自己拟定。
[root@localhost ~]# mkdir /abc/wbx{1..1000}
[root@localhost ~]# ls /abc
wbx1 wbx210 wbx323 wbx436 wbx549 wbx661 wbx774 wbx887
4、请用绝对路径方式切换到/liangjian/liyunlong/weiheshang/duanpeng 目录下
并用pwd查看当前的路径,请用上级目录名".."方式切换到 /liangjian/liyunlong下
[root@localhost ~]# cd /liangjian/liyunlong/weiheshang/duanpeng
[root@localhost duanpeng]# pwd
/liangjian/liyunlong/weiheshang/duanpeng
[root@localhost duanpeng]# cd ../..
[root@localhost liyunlong]# pwd
/liangjian/liyunlong
5、请一次删除/abc下一次创建的1000个目录,请在/abc下用touch再创建20个以stu开头的普通可读文档,文档后缀为.txt
[root@localhost abc]# rm -fr wbx{1..1000}
[root@localhost abc]# ls
[root@localhost abc]# touch stu{1..20}.txt
[root@localhost abc]# ls
stu10.txt stu14.txt stu18.txt stu2.txt stu6.txt
stu11.txt stu15.txt stu19.txt stu3.txt stu7.txt
stu12.txt stu16.txt stu1.txt stu4.txt stu8.txt
stu13.txt stu17.txt stu20.txt stu5.txt stu9.txt
6、请用cp命令将/boot/目录下以vmlinuz开头的文件拷贝到/abc下,并以查看他们占磁盘的空间大小。
[root@localhost ~]# cp /boot/vmlinuz* /abc
[root@localhost ~]# du /abc/vmlinuz*
4912 /abc/vmlinuz-0-rescue-1e2f1204383043569e93e86f8a057c05
4912 /abc/vmlinuz-3.10.0-229.el7.x86_64
7、将其中一个vmlinuz开头的文件改名为kgc,另外一个剪切到/tmp目录下。
[root@localhost abc]# mv vmlinuz-3.10.0-229.el7.x86_64 kgc
[root@localhost abc]# ls
kgc stu1.txt
stu10.txt stu20.txt
stu11.txt stu2.txt
stu12.txt stu3.txt
stu13.txt stu4.txt
stu14.txt stu5.txt
stu15.txt stu6.txt
stu16.txt stu7.txt
stu17.txt stu8.txt
stu18.txt stu9.txt
stu19.txt vmlinuz-0-rescue-1e2f1204383043569e93e86f8a057c05
[root@localhost abc]# mv vmlinuz-0-rescue-1e2f1204383043569e93e86f8a057c05 /tmp
[root@localhost abc]# cd /tmp
[root@localhost tmp]# ls
hsperfdata_root
ks-script-CjJCT0
ssh-pD99kNe6JPLg
ssh-qlCLprGGealU
systemd-private-GdXfi3
systemd-private-GkZogA
systemd-private-hWXjl5
systemd-private-OM6y7g
systemd-private-SUqpm1
systemd-private-u5vgpx
vmlinuz-0-rescue-1e2f1204383043569e93e86f8a057c05
vmware-root
yum.log
yum_save_tx.2019-07-19.18-59.JAsUk0.yumtx
yum_save_tx.2019-07-23.09-03._DdbNC.yumtx
yum_save_tx.2019-07-23.09-04.VG05Pp.yumtx
yum_save_tx.2019-07-23.10-11.IzyuW_.yumtx
yum_save_tx.2019-07-23.10-34.Q5BLrw.yumtx
8、查看/tmp/目录下以vmlinuz开头文件的详细状态信息。
[root@localhost tmp]# stat vmlinuz-0-rescue-1e2f1204383043569e93e86f8a057c05
文件:"vmlinuz-0-rescue-1e2f1204383043569e93e86f8a057c05"
大小:5029136 块:9824 IO 块:4096 普通文件
设备:fd00h/64768d Inode:3024921 硬链接:1
权限:(0755/-rwxr-xr-x) Uid:( 0/ root) Gid:( 0/ root)
最近访问:2019-07-23 19:18:12.094724252 +0800
最近更改:2019-07-23 19:18:12.694760142 +0800
最近改动:2019-07-23 19:21:15.191348992 +0800
创建时间:-
9、用find命令查找/tmp目录下以vmlinuz开头及大小超过1M的文件
[root@localhost tmp]# find /tmp -name vmlinuz* -a -size +1M
/tmp/vmlinuz-0-rescue-1e2f1204383043569e93e86f8a057c05
[root@localhost tmp]# du -hs /tmp/vmlinuz-0-rescue-1e2f1204383043569e93e86f8a057c05
4.8M /tmp/vmlinuz-0-rescue-1e2f1204383043569e93e86f8a057c05