常用系统命令1

1、du  统计磁盘文件使用情况

zh7152106@zh7152106:~$ du -h -d 1
4.0K    ./.cache
28K    .

2、df  打印文件系统信息

 1 zh7152106@zh7152106:~$ df -h 
 2 Filesystem                      Size  Used Avail Use% Mounted on
 3 udev                            971M     0  971M   0% /dev
 4 tmpfs                           199M  6.2M  193M   4% /run
 5 /dev/mapper/zh7152106--vg-root   18G  1.7G   16G  10% /
 6 tmpfs                           992M     0  992M   0% /dev/shm
 7 tmpfs                           5.0M     0  5.0M   0% /run/lock
 8 tmpfs                           992M     0  992M   0% /sys/fs/cgroup
 9 /dev/sda1                       720M   58M  626M   9% /boot
10 tmpfs                           199M     0  199M   0% /run/user/1000

3、fdisk  显示和管理磁盘分区

1 zh7152106@zh7152106:~$ sudo fdisk -l
2 Disk /dev/sda: 20 GiB, 21474836480 bytes, 41943040 sectors
3 Units: sectors of 1 * 512 = 512 bytes
4 Sector size (logical/physical): 512 bytes / 512 bytes
5 I/O size (minimum/optimal): 512 bytes / 512 bytes
6 Disklabel type: dos
7 Disk identifier: 0x10dac547

 注意:扇区,sector属于磁盘的物理概念,是物理擦写的最小单位;

       多个扇区组成一个磁盘块,属于软件系统的概念,每个块上仅能存在一个文件的内容信息,即文件实际占用空间是块的整数倍;

    页,属于内存的最小存储单位,通常为块的2^n倍大小。

4、stat   显示文件或文件系统信息,如下显示块大小。

1 zh7152106@zh7152106:~$ stat /boot
2   File: '/boot'
3   Size: 4096          Blocks: 8          IO Block: 4096   directory
4 Device: 801h/2049d    Inode: 2           Links: 4
5 Access: (0755/drwxr-xr-x)  Uid: (    0/    root)   Gid: (    0/    root)
6 Access: 2020-06-20 09:12:55.700103302 +0800
7 Modify: 2020-06-20 09:13:10.080103725 +0800
8 Change: 2020-06-20 09:13:10.080103725 +0800

5、blockdev  显示设备块相关信息

6、getconf  获取当前配置信息,如下获取页大小

 1 zh7152106@zh7152106:~$ getconf PAGESIZE
 2 4096
 3 zh7152106@zh7152106:~$ getconf -a
 4 LINK_MAX                           65000
 5 _POSIX_LINK_MAX                    65000
 6 MAX_CANON                          255
 7 _POSIX_MAX_CANON                   255
 8 MAX_INPUT                          255
 9 _POSIX_MAX_INPUT                   255
10 NAME_MAX                           255
11 _POSIX_NAME_MAX                    255

 7、lscpu  显示cpu相关信息

 1 zhangyangguang@ubuntu:~/test/hello_insmod$ lscpu
 2 Architecture:          x86_64
 3 CPU op-mode(s):        32-bit, 64-bit
 4 Byte Order:            Little Endian
 5 CPU(s):                4
 6 On-line CPU(s) list:   0-3
 7 Thread(s) per core:    1
 8 Core(s) per socket:    1
 9 Socket(s):             4
10 NUMA node(s):          1
11 Vendor ID:             GenuineIntel
12 CPU family:            6
13 Model:                 142
14 Stepping:              9
15 CPU MHz:               2711.999
16 BogoMIPS:              5423.99
17 Hypervisor vendor:     VMware
18 Virtualization type:   full
19 L1d cache:             32K
20 L1i cache:             32K
21 L2 cache:              256K
22 L3 cache:              3072K

 

posted @ 2020-08-20 23:56  浊烽  阅读(103)  评论(0)    收藏  举报