(Memo) common configuration files in Linux

File function: configure information before Logon

File Name:/etc/issue

Note:

Some escape characters in this file indicate special meanings:

/D current date

/L display the number of terminals currently

/N display the host's network name

/O display Domain Name

/R display kernel version

/T current time

/S first try the operating system name

/V display the operating system version

File Content example:

Red Hat Enterprise Linux Server Release 5 (tikanga) <br/> kernel/r on an/m <br/> do your best!

 

 

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File function: Configure user information after Logon

File Name:/etc/motd

Note: The administrator can use this file to send some notifications to the operator.

 

 

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File function: Permanent saving of Environment Variables

File Name:/etc/profile and ~ /. Bash_profile

Name:/etc/profile can be used to save system environment variables, while ~ /. Bash_profile save your own environment variables

File Content example:

#. Bash_profile </P> <p> # Get the aliases and functions <br/> If [-f ~ /. Bashrc]; then <br/> .~ /. Bashrc <br/> fi </P> <p> # user specific environment and startup programs </P> <p> Path = $ path: $ home/bin </P> <p> export path <br/> unset username <br/> export oracle_base =/usr/lib/Oracle/<br/> export oracle_sid = orcl

 

 

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File function: Nic Configuration

File Name:/etc/sysconfig/network-scripts/ifcfg-eth0

Note: You can configure the eth0 parameter. The common parameter name is as follows:

Device-nic name

Bootproto-boot protocol; optional values: static or DHCP

Broadcast-broadcast address

Hwaddr-MAC address

Ipaddr-IP Address

Netmast-subnet mask

Network-the first IP address of the network segment

Gateway-Gateway

Onboot-start or not

File Content example:

 Device = eth0 <br/> bootproto = static <br/> broadcast = 192.168.1.255 <br/> hwaddr = 00: 40: D0: 13: C3: 46 <br/> ipaddr = 192.168.1.13 <br/> netmask = 255.255.255.0 <br/> network = 192.168.1.0 <br/> gateway = 192.168.1.2 <br/> onboot = Yes