Tips for linux

Tips for linux: general Linux technology-Linux technology and application information. For more information, see the following. Enable color text in linux
Procedure (very simple ):
I'm using Red Hat Enterprise 4, this rpm package in the second installation disc, is a vim-enhanced-6.3.035-3.i386.rpm
1. Place the second installation disk
2. mount/dev/cdrom
3. rpm-ivh/media/cdrom/RedHat/RPMS/vim-vim-enhanced-6.3.035-3.i386.rpm
4. exit
Log on again, vi/etc/fstab

How about it?

Modify IP addresses in linux and unix

1. netconfig graphic interface change

2. Use VI to modify the IP address

Step 1: vi/etc/sysconfig/network-scripts/ifcfg-eth0

Step 2: # Advanced Micro Devices [AMD] 79c970 [PCnet32 LANCE]
DEVICE = eth0 Nic name
BOOTPROTO = static
IPADDR = 192.168.1.236 IP Address
NETMASK = 255.255.255.0 Subnet Mask
GATEWAY = 192.168.1.1 GATEWAY
HWADDR = 00: 0C: 29: E8: 88: 3E MAC address
ONBOOT = yes
DHCP_HOSTNAME = lab.com.cn

FreeBSD practices:
Run ifconfig de0 10.10.10.1 in FreeBSD shell.
De0 indicates the name of the NIC device.

You can also run/stand/sysinstall in shell to go to the installation menu and reset the IP address in network settings.

On solaris:

You can only change the IP address of the host in the/etc/hosts file.

Create a linux automatic shutdown user

Log on as a root user
Adduser down
Passwd down
# Vi/etc/sudoers // Add the following line
Down ALL = NOPASSWD:/sbin/shutdown-h now
Then modify/etc/profile
If [$ LOGNAME = "down"] // if the user name is called down
Then
Echo "The machine will shutdown now! Please logout! "// Display information
Sleep 5
/Usr/bin/sudo/sbin/shutdown-h now // shutdown command
Exit
Fi