linux mint 18 3

application scenarios, the 8139CP of Linux is indeed improved, we first look at the use of 8139CP in the Linux 2.6.6 kernel on the x86 (PIII-900Mhz) platform data packet receiving and processing situation: the comparison table is as follows: 　　 Psize Ipps Tput Rxint Done ---------------------------------------------------- 60 490000 254560 21 10 128 358750 259946 27 11 256 334454 450034 34

does not want the device to be abandoned or disconnected at this time, because there is no need to submit urb. The next function, init_completion (), is just a queue operation function, which is defined in include/linux/completion. h: 39 static inline void init_completion (structcompletion * x) 40 { 41 x-> done = 0; 42 init_waitqueue_head ( x-> wait ); 43} It only calls init_waitqueue_head to initialize a waiting queue. The definition of struc

The third part of Linuxshell script is about shell commands and process control. since we have not been able to talk about process control in space, today we will only introduce the ifcase and select parts of the previous three sections. The following three parts can only be introduced in section 4 of Linuxshell script basics. Linux shell script basic learning Lecture 3: When we introduced shell commands an

and when processed asm symlink,# Version. h and scripts_basic is processed/created. # Listed in dependency orderPHONY + = prepare archprepare prepare0 prepare1 prepare2 prepare3# Defining multiple pseudo targets# Prepare3 is used to check if we are building in a separate output directory,# Step 3: Check whether the output directory is customized.# And if so do:#1) Check that make has not been executed in the kernel src $ (srctree)#2) Create the role

appropriate identity for the server. Common name must exactly match the host full name of the server.(Note that any comma should use a leading backslash [\] to escape)650) this.width=650; "src=" Http://s4.51cto.com/wyfs02/M00/8B/42/wKiom1hID9ax-aC-AADhiJd32HA645.png "title=" Picture 34.png "alt=" Wkiom1hid9ax-ac-aadhijd32ha645.png "/> 3. Modify the configuration file/etc/httpd/conf.d/ssl.conf650) this.width=650; "src=" Http://s4.51cto.com/wyfs02/M00

Linux-vi Editor 3: linuxvi Editor 1. open the file> Vi file // This mode is the command mode 2. Tail row operation>: Q // This mode is "tail mode">: W // Save the modified document>: Wq // save and exit>: Q! // Force exit without saving the changes>:/Content // find the specified content. "n" searches for the next one, and "N" searches for the previous one.// Find the end of the document and run it to the b

More and more people are beginning to touch the Linux operating system, from VPS to the brushless system (such as OpenWrt, Tomato), but also essential to a variety of probe and system monitoring interface to see "System average Load" or "load Average" the word, But it's not like we used to be in the Windows, Mac operating system to provide a percentage of the CPU, memory consumption, but a few spaces separated by a floating-point number to represent t

First, let's start by understanding the file deletion principle:1) Linux is controlled by the number of link files deleted, only when a file does not exist any link, the file will be deleted. In general, there are 2 link counters for each file: I_count and I_nlink.2) When a process opens a file, it still exists on disk as long as the process remains open for that file, even if it is deleted. This means that the process does not know that the file has

/bashExample two: The user vbird2 password expires in 2009/12/31.[Email protected] ~]# usermod-e "2009-12-31" Vbird2[[email protected] ~]# grep vbird2/etc/shadowvbird2:$1$50mnwnfq$ochx.0tpancq7ece4hyei.:14301:0:60:7:10:14609:Example three: When we set up Vbird3 this system account and did not give home directory, please set up his home directory[Email protected] ~]# ll-d ~vbird3LS:/home/vbird3:no such file or directory [Email protected] ~]# cp-a/etc/skel/home/vbird3[Email protected] ~]# chown-r

13. Format and output the current running process of the specified user: In this example, we pass the user list to the script in the form of Script Parameters. After the script reads the parameters, print the process of the user in the user list in the form of a tree. /> CAT> test13.sh #! /Bin/sh #1. Read the Script Parameters cyclically and construct user list variables that can be recognized by egrep (based on the grep extension regular expression ). #2. If the userlist variable has not bee

More and more people are beginning to touch the Linux operating system, from VPS to the brushless system (such as OpenWrt, Tomato), but also essential to a variety of probe and system monitoring interface to see "System average Load" or "load Average" the word, But it's not like we used to be in the Windows, Mac operating system to provide a percentage of the CPU, memory consumption, but a few spaces separated by a floating-point number to represent t

"^[[:alnum:]][_[:alnum:]]*@[[:alnum:]][_[:alnum:]]*\. [[: Alnum:]] "mail.txt [email protected][email protected][[email protected] ~]#7. Find the main root of the/var directory, and belong to all files or directories of mail;[[email protected] ~]# find/var-user root-group mail #使用find命令加-user and-group options specify their owner group/var/spool/mail[[email Prot Ected] ~]# find/var-user root-group mail-ls #使用选项-ls View Details 262439 4 drwxrwxr-x 2 root mail 4096 September 5

information when the directory is successfully deleted.Change your directoryYou can use the CD command to change the current directory into any directory that has permissions, with the following syntax:$CD dirnameDirName is a path, either a relative path or an absolute path. For example$CD/usr/local/bin$You can enter the/usr/local/bin directory. You can use relative paths to enter the/usr/home/amrood directory from this directory:$CD: /.. /home/amrood$Renaming a directoryThe MV (move) command c

Linux commands1, Shutdown shutdown-h now2,init 0 shutting down the system3,shutdown-h Hours:minutes Shutdown system at scheduled times4,shutdown-c Cancel the system at a predetermined time5,shutdown-r now restart6,reboot restart7,logout logoff8,cd/home Enter '/home ' directory9,CD. Return to the top level directory10,CD. /.. Return to the top level two directory11,CD into the personal home directory12,cd ' User1 into the personal home directory13,CD-

CCCCcc:x:513:513::/home/ccc:/bin/ksh112.2 Modify information for existing users11.2.311.3 Group AccountIntroduction :11.4 managing group accounts11.6 Account Maintenance11.7 account Information Display permissions, owners, and ACLs 12.1 Setting file and directory permissions Example:-rw-r--r---rw-r--r--rwS r--r---rw-r-s R---rw-r--r-t420 s S T6 4 4 4 2 1 4600 2600 1600rw-: User owner's permission "R: Read w write"r--: Permissions for group ownersr--: Permissions for the remaining other users (t

shut down the system.Parameters-D do not record in the wtmp.-F Regardless of the current runlevel, the system is forced to shut down without calling shutdown.-I close the entire network interface before halt.-N Halt, do not perform sync first.After-P halt, execute poweroff.-W is only recorded in the wtmp and does not actually end the system.SyncFunction Description: Writes the data in the memory buffer to disk.Syntax: Sync [--help][--version]Note: In a Linu