linux ifconfig

: Ping www.baidu.com)4. If the ifconfig command is still not supported, you will need to install the Net-tools tool[Root@localhost ~]# cd/sbin [Root@localhost sbin]# ls Check to see if there isifconfigNo ifconfig , install it.net-tools package[Root@localhost sbin]# sudo yum install net-tools-y Refer to Centos7:ifconfig command not found to resolveAfter the instal

server and discover that the port is occupied, you can use Lsof-i:port to see which process the corresponding port number is being occupied by. Port occupancy is a very common problem, such as 3306 of the time that I've met several times, either because a program is just taking up or not being able to end the process before, which can help you see the port with Lsof. Modify Permissions: chmod chmod/index.html. Can modify the file permissions, which is set to 00

: displays the current time 8. Common network communication commands Ping: Test connectivity [Root @ localhost Fuxi] # Ping 192.168.1.102Ping 192.168.1.102 (192.168.1.102) 56 (84) bytes of data.64 bytes from 192.168.1.102: icmp_seq = 1 TTL = 64 time = 1.10 MS64 bytes from 192.168.1.102: icmp_seq = 2 TTL = 64 time = 0.289 MS64 bytes from 192.168.1.102: icmp_seq = 3 TTL = 64 time = 0.195 MS64 bytes from 192.168.1.102: icmp_seq = 4 TTL = 64 time = 0.200 MS64 bytes from 192.168.1.102: icmp_seq = 5 T

because The routing table only allows numbers, and some network cards are eth1 eth2 but some network cards are p2p1 p2p2 and so on. So just take the numbers.> IP route flush table 12$tn; emptying the routing table 12$tn> IP route add default via ' ifconfig $p |grep "inet addr" |cut-d:-f2 |cut-d ""-f1 | Cut-d "."-f1,2,3 '. 254 dev $p src ' ifconfig $p |grep "inet addr" |cut-d:-f2 | Cut-d ""-f1 ' table 12$tn

program. such as: MKE2FS, Ifconfig and so on./usrThis directory is the largest disk space in the Linux system directory, the directory has many applications, his subdirectory is also more complex, and there are many differences between the system, I will introduce it in the next table./devAll the files under this directory are special files, and the Linux system

and simple, the pursuit of code minimization, software updates faster3, describe the philosophy of Linux, and according to their own understanding of its interpretation of the description. 1, all documents: almost all of the resources are abstracted into the form of documents, including hardware equipment, and even communication interface, etc. 2, small, by a number of functions of a single program, a program only do one thing, and do a good job, thr

Chapter 1 Preface The purpose of this article is to introduce the general process of establishing and developing an embedded Linux system. A small Linux system can be transplanted to other hard disks, floppy disks, USB disks, and Flash ROM ...... What should I do to build an embedded Linux system? That is, what is the content of this article? I will first introdu

[Programming in linux] ARP programming and linux arp Programming (Note: This part is taken from "Linux C Programming one-stop learning") Ethernet (RFC 894) frame format Figure 1 Ethernet packet type The source address and destination address are the hardware address (also called the MAC address) of the network card. The length is 48 bits and is fixed at the fact

Network hardwareLinux can use any network hardware that has a driver. Linux drivers are compiled into the kernel individually or as loadable modules. The Linux kernel supports many popular NICs by default. When selecting network hardware, it is best to always use the devices listed in the Hardware Compatibility List (see Resources for links). Also use the latest Linux