get a system, sure to see the system configuration, Linux look at the configuration, can not be as intuitive as windows. You can only view one one.
One: CPU
[Root@srv/]# More/proc/cpuinfo | grep "model name"
Model Name:intel (R) Xeon (r) CPU X3220 @ 2.40GHz
Model Name:intel (R) Xeon (r) CPU X3220 @ 2.40GHz
Model Name:intel (R) Xeon (r) CPU X3220 @ 2.40GHz
Model Name:intel (R) Xeon (r) CPU X3220 @ 2.40GHz
[Root@srv/]# grep ' model name '/proc/cpuinfo
Model Name:intel (R) Xeon (r) CPU X3220 @ 2.40GHz
Model Name:intel (R) Xeon (r) CPU X3220 @ 2.40GHz
Model Name:intel (R) Xeon (r) CPU X3220 @ 2.40GHz
Model Name:intel (R) Xeon (r) CPU X3220 @ 2.40GHz
[Root@srv/]# grep ' model name '/proc/cpuinfo | Cut-f2-d:
Intel (R) Xeon (r) CPU X3220 @ 2.40GHz
Intel (R) Xeon (r) CPU X3220 @ 2.40GHz
Intel (R) Xeon (r) CPU X3220 @ 2.40GHz
Intel (R) Xeon (r) CPU X3220 @ 2.40GHz
Two: Memory
[Root@srv/]# grep memtotal/proc/meminfo
memtotal:614400 KB
[Root@srv/]# Free-m
Total used free shared buffers Cached
mem:600 23 576 0 0 0
-/+ buffers/cache:23 576
swap:0 0 0
[Root@srv/]# free-m |grep "Mem" | awk ' {print $} '
600
Third: View the number of CPU bits (64)
[Root@srv/]# getconf Long_bit
32
Four: View Linux version
[Root@srv/]# More/etc/redhat-release
CentOS Release 5 (Final)
[Root@srv/]# More/etc/issue
CentOS Release 5 (Final)
KERNEL/R on an/m
[Root@srv/]# More/proc/version
Linux version 2.6.18-92.1.18.el5.028stab060.2pae ([email=root@rhel5-32-build-xemul]root@rhel5-32-build-xemul[/ Email]) (GC
C Version 4.1.2 20071124 (Red Hat 4.1.2-42) #1 SMP Tue 12:31:30 MSK 2009
Five: View kernel version
[Root@srv/]# Uname-r
2.6.18-92.1.18.el5.028stab060.2pae
[Root@srv/]# Uname-a
Linux srv.eddiechen.cn 2.6.18-92.1.18.el5.028stab060.2pae #1 SMP Tue 12:31:30 MSK 2009 i686 i686 i386 Gnu/linux
Six: View the time zone
[Root@srv/]# Date-r
Wed Feb 2009 02:20:50 +0000
[Root@srv/]# Mv/etc/localtime/etc/localtime.save
[Root@srv/]# Cp/usr/share/zoneinfo/asia/shanghai/etc/localtime
[Root@srv/]# Date-r
Wed Feb 2009 10:24:26 +0800
Seven: Host name
View Host Name
[ROOT@SRV/]# hostname
Www.ifuoo.com
Modify Host Name
[Root@srv/]# Cat/etc/sysconfig/network
Eight: View SELinux situation
[Root@srv/]# Sestatus
SELinux status:disabled
Ninth: Network
Ip
[Root@srv/]# Ifconfig | grep ' inet addr: ' | Grep-v ' 127.0.0.1 ' | Cut-d:-f2 | awk ' {print '} '
207.154.202.216
Gateway
[Root@srv/]# Cat/etc/sysconfig/network
networking= "Yes"
Gateway= "192.0.2.1"
Hostname= "srv.eddiechen.cn"
Dns
[Root@srv/]# cat/etc/resolv.conf
NameServer 208.74.168.131
NameServer 208.74.168.132
NameServer 4.2.2.1
Modifying the Host File
[Root@srv/]# cat/etc/hosts
X: Packages already installed
[Root@srv/]# Rpm-qa | Wc-l
197
[Root@srv/]# Yum List installed | Wc-l
198
11: Disks and partitions
[Root@srv/]# Df-h
FileSystem Size Used Avail use% mounted on
/dev/simfs 10G 353M 9.7G 4%/
[Root@srv/]# Du-sh
353M
[Root@srv/]# Du/etc-sh
4.6m/etc
Nine: View the keyboard layout
Cat/etc/sysconfig/keyboard
Cat/etc/sysconfig/keyboard | grep KEYTABLE | Cut-f2-d=
12: View the default language
Echo $LANG $LANGUAGE
cat/etc/sysconfig/i18n
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http://hi.baidu.com/mypc007
The following commands allow you to view the size of the physical memory that the rs/6000 system is equipped with.
LSDEV-CC Memory
View the physical memory device for the rs/6000 configuration, as shown below for the sample output:
Mem0 Available 00-00 Memory
L2cache0 Available 00-00 L2 Cache
Use the command again
Lsattr-el MEM0
Output is as follows
Size total amount of physical memory in Mbytes False
Goodsize Amount of usable physical memory in Mbytes False
This example shows that the physical memory of the machine is 512MB. If you have a device name mem1 in the previous Lsdev output, use the same command to view its corresponding size and so forth. L2CACHE0 is the device name for the system Level 2 cache. Also, use the command:
Lsattr-el L2CACHE0
You can view its size.
View the number of Linux system bits
1. Programming Implementation:
Returns a value of sizeof (int) in a program that returns the number of bytes in the operating system. If the return 4 is a 32-bit operating system, the return of 8 is 64 digits.
2.getconf command:
The getconf command can obtain basic configuration information about the system, such as operating system digits, memory size, disk size, and so on.
For example:
Determine the disk hdisk0 size, or, if root, enter:
Getconf Disk_size/dev/hdisk0
Determine the actual memory size: getconf real_memory
Determine if the machine hardware is 32-bit or 64-bit: getconf Hardware_bitmode
Determine if the kernel is 32-bit or 64-bit: getconf Kernel_bitmode
If the above getconf Kernel_bitmode method is unsuccessful (not successful on my machine), it may be because of an inconsistent version and you can try again: getconf Word_bit, which returns the length of type int, in line with the sizeof (int).