1. 1.  查看系统中cpu及内存的信息。

[root@xuexi ~]# cat /proc/cpuinfo (查看cpu)

processor   : 0

vendor_id   :GenuineIntel

cpu family  : 6

model       : 142

model name  :Intel(R) Core(TM) i5-7200U CPU @ 2.50GHz

stepping    : 9

cpu MHz     :2712.000

cache size  : 3072KB

fpu     : yes

fpu_exception   :yes

cpuid level : 22

wp      : yes

flags       : fpuvme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dtsmmx fxsr sse sse2 ss syscall nx pdpe1gb rdtscp lm constant_tsc up arch_perfmonpebs bts xtopology tsc_reliable nonstop_tsc aperfmperf unfair_spinlock pnipclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnttsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm3dnowprefetch ida arat epb xsaveopt pln pts dts fsgsbase bmi1 avx2 smep bmi2invpcid

bogomips    :5424.00

clflush size    : 64

cache_alignment : 64

address sizes   : 42bits physical, 48 bits virtual

power management:

 

[root@xuexi ~]# cat /proc/meminfo (查看内存)

MemTotal:       1004412 kB

MemFree:         904152 kB

Buffers:           9844 kB

Cached:           28600 kB

SwapCached:           0 kB

Active:           19440 kB

Inactive:         27952 kB

Active(anon):       8976 kB

Inactive(anon):     196 kB

Active(file):     10464 kB

Inactive(file):   27756 kB

Unevictable:          0 kB

Mlocked:              0 kB

SwapTotal:      1023992 kB

SwapFree:       1023992 kB

Dirty:               56 kB

Writeback:            0 kB

AnonPages:         8964 kB

Mapped:            6176 kB

Shmem:              224 kB

Slab:             30892 kB

SReclaimable:      8848 kB

SUnreclaim:       22044 kB

KernelStack:        592 kB

PageTables:        1744 kB

NFS_Unstable:         0 kB

Bounce:               0 kB

WritebackTmp:         0 kB

CommitLimit:    1526196 kB

Committed_AS:     52656 kB

VmallocTotal:  34359738367 kB

VmallocUsed:     153184 kB

VmallocChunk:  34359579312 kB

HardwareCorrupted:    0 kB

AnonHugePages:        0 kB

HugePages_Total:      0

HugePages_Free:       0

HugePages_Rsvd:       0

HugePages_Surp:       0

Hugepagesize:      2048 kB

DirectMap4k:       6144 kB

DirectMap2M:    1042432 kB

DirectMap1G:          0 kB

 

  1. 2.  /etc/passwd文件复制到/root/passwd文件。

[root@xuexi ~]# cp /etc/passwd /root/passwd /etc/passwd文件复制到/root/passwd文件

cp: overwrite `/root/passwd'? y

 

  1. 3.  使用一条命令创建一个/test目录、并使该目录下有/test/user1/test/user2两个子目录。

[root@xuexi ~]# mkdir -p /test/{user1,user2}

[root@xuexi /]# tree /test

/test

├── user1

└── user2

  1. 4.  /etc目录复制到/tmp目录下、并保持原有权限。

[root@xuexi /]# cp -frp /etc /tmp/

[root@xuexi /]# ls /tmp/

etc

  1. 5.  /root目录下创建空文件file1file2file3,使用一条命令完成。

[root@xuexi /]# touch /root/{file1,file2,file3}

[root@xuexi /]# ls /root/|grep file

file1

file2

file3

 

  1. 6.  查找/root目录下以file开头的文件、并删除它们。用一条命令完成。

[root@xuexi /]# find /root/ -type f -name"file*"|xargs rm -f

[root@xuexi /]# ls /root/|grep file

[root@xuexi /]# ls /root/

a               b        install.log           zhou2

anaconda-ks.cfg c.txt    install.log.syslog  passwd     zhou3

a.txt           eet.txt              zhou4

 

  1. 7.  使用findwc命令结合管道符,统计当前linux系统中共包含多少个目录。

[root@xuexi /]# find / -type d|wc -l

find: `/proc/2700/task/2700/fd/5': No such file ordirectory

find: `/proc/2700/task/2700/fdinfo/5': No such file ordirectory

find: `/proc/2700/fd/5': No such file or directory

find: `/proc/2700/fdinfo/5': No such file or directory

11636

  1. 8.  查找 /boot 目录中 大小超过 1024KB 且 名称以“vmlinuz”开头的文件

[root@xuexi /]# find /boot/ -size +1024 -name"vmlinuz*"

/boot/vmlinuz-2.6.32-431.el6.x86_64

  1. 9.  如何查看内核的版本

[root@xuexi /]# uname -r

2.6.32-431.el6.x86_64

  1. 10. 在centos 6.5中,如何表示第三块SCSI硬盘的第2个逻辑分区

答:sdc6

  1. 11. 如何关闭或重启centos 6.5

答:关机:halt,poweroff,shutdown -h now

重启:reboot,shutdown -r now