My name Jiang Hao, after the old boy education 4-5 months of study, I must reach the salary of 12K, in order to achieve this goal I will take the following actions:1, multi-directional experienced people learn to ask!2, empty cup of mind, everything from zero start!3, do a good job of each lesson notes!4, working days on average at least 5 hours a day study time, weekend at least 8 hours!5, daily reasonable arrangement of time, less to do with the work of learning unrelated things!6, encountered
My name Yin Sihan , after the old boys education Viban 5-6 months of study, I must achieve the salary goal is 8 k, in order to achieve this goal I will take the following big action or plan: 1. strive for 3 hours of study per day for work reasons. 2. Review the notes every day, get into the habit of reviewing after class and previewing before class. 3. Follow the teacher's train of thought in class, listen carefully, look carefully, write. 4. do not ask for more questions until you understand
My name is strong, after the old boy education ops 5-6 months after the study, I must achieve the salary goal is 10000, in order to achieve this goal, I will take the following ten actions:1, on time class, not late, do not leave early2, carefully arrange their own time. 3, Pre-study before the preview4, make full use of classroom time, do not nap, do not wander5, after study to remember to review6, not playing computer games, dota,lol, etc.7, learn to affirm their courage to turn the lack into
is in the process context when it executes system calls.(2) The current pointer points to the present task, which is the process that raised the system call.(3) In the context of the process, the kernel can hibernate and can be preempted.(4) System_call () is responsible for switching to user space and letting the user continue execution when the system call returns.5.6.1 The last step of binding a system call:(1) Add the table entry in the system call table;(2) The system call number is define
Hello, teachers and classmates all good:I am the old boy education student Jingjing, is honored here and everybody acquaintance, hoped after the old boy education operation and maintenance class several months diligently study, can with everybody grows together progress together realizes the self-worth, I believe we in the old boy education led, One small step in IT operations can be a big step in the development of the IT industry, and what can we do to achieve such a meaningful goal and to emb
After the old boy education ops 5-6 months study, by the end of 16, the target salary is 8k-10k, in order to achieve this goal, I will take the following 10 actions:1, before learning to conduct self-analysis, clear learning purposes.2, correct learning attitude, change the past passive learning situation.3, listen carefully, remember good notes, not late, do not leave early.4, to do the pre-class preview, after class to ask the teacher for difficult questions.5, every night to ensure that work
Section III File operations
File attribute Ls–al (the first character of the filename is. for hidden files)Number of connections: How many file names are connected to the secondary node (i-node)Display the full time format: "Ls-l–full-time"File type permissions:-rwxrwx-The first file type: D-directory directory;-Files; l-link file link files; B-accessible random access device; C Serial Port deviceR Readable, W writable, x executable第2-4 for file owner rights, 5-7 for group permissions,
queue, and then call Schedule () to select and execute a different process.The process of waking up is just the opposite of the process being set to executable state, and then moving from the wait queue to the executable red-black tree.4.6 Preemption and Context switching4.6.1 User preemptionArises in the following cases:When the user space is returned from the system, when the user space is returned from the interrupt handler;4.6.2 kernel preemptionOccurs in the following situations:The interr
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Books you have read:
C programming language version 2
Linux C Programming
Advanced Programming in UNIX environment (version 2nd)
Linux Device Drivers (Third edition)
Build an embedded Linux System
Linux and Unix shell p
gcc
3.5 GNU Debugger
3.5.1 download and install GDB
3.5.2 Use GDB
3.6 KDE Debugger
3.6.1 download and install kdbg
3.6.2 use kdbg
3.7 GNU objdump Program
3.7.1 use objdump
3.7.2 objdump example
3.8 GNU downloader program'
3.8.1 use the Configurator
3.8.2 example
3.9 complete compilation and Development System
3.9.1 Linux Basics
3.9.2 download and run mepis
3.9.3 New Development System
Conclusion 3.10
Chapter 2 assembly language program examples
4.1 P
First, download the " Flying Pigeon Biography book":Http://www.ipmsg.org/archive/g2ipmsg-0.9.5.tar.gzSecond, decompression:Tar zxvf g2ipmsg-0.9.5.tar.gzCD g2ipmsg-0.9.5Third, modify the parameters to enable it to support the transmission of Chinese name files#以下几行主要应对0.9.5 Version Configure--with-ext-charcode=cp936 invalid issueSed-i ' s/cp932/cp936/g ' configure.inSed-i ' s/cp932/cp936/g ' configureAnyway, regardless of the other character set, s
Code can run, but it is really not observed what the reader first, or write a priority. It is not known where this priority conflict is coming from, and it does not know what the book says.
Especially in the writer of the following code, if Sem_wait (z) is introduced, the writer process blocks, causing the reader to block. After the removal, the reader gives priority to the situation.
#include
Compilation method: Gcc-o PVRWW Pv-posix-reader-writer.
My name is Sun Hanke, from a common rural family in Shandong, high school play for three years, and finally did not enter the undergraduate, on a general specialty, in an instant two years later, to the internship, or nothing to remember, learn all back to the teacher, and do not want to go through this life, just touch aged boy teacher to our school to preach, Plus have seniors in this study graduated salary is good, give us recommendations, so I came here, came to the old boy. After two days o
My name Roahon, after the old boy education ops 5-7 months study, I must achieve the salary target is 6K,In order to achieve this goal I will take the following 10 major actions or scenarios:1, adhere to the average daily study for more than 4 hours2. Complete the preview before each class3, complete after each lesson review summary (standardized Word document)4, each lesson difficulty, focus through drawing memory5, the teacher told each failure case fully understand and memorize6, each softwar
Linux/Unix System Programming Manual Reading Notes
Chapter 2
This chapter focuses on a bunch of IDs. Actual user (Group) ID, valid user (Group) ID, save set user (Group) ID, file system user (Group) ID. And the secondary group ID.
The actual user ID is determined.
The valid user ID is determined when the process is executed. PS: Processes with valid user ID 0 have all superuser permissions.
When you know how to save the set user ID (saved set-user-ID)
Book inventory plays an important key business data for warehouse management operations in books. Development at any age now promotes blood circulation in books, book types and update speed are just as fast rising.In order to ensure a foothold in the book industry, to ensure the correct purchase and inventory control and delivery. In order to avoid the backlog of
IOS Address Book programming, listening for system address book changes, and ios address book
Listen for address book changes
The client code must be implemented as follows:
/* Remove the registration function */-(void) dealloc {ABAddressBookUnregisterExternalChangeCallback (_ addressBook, ContactsChangeCallback, nil)
Operating System Experiment Instruction book
Computer College of Yantai University
Operating System Course Group
2008-9-20
the first part of the operating system on the computer guidance
Linux Operating system environment:RedHat Enterprise Linux ES Release 3 (Taroon Update 1) (2.4.21-9.el)
Red Flag Linux
Gitbook set up local book
1, do not login, click Do this later2, click New book–> Enter book name –>confirm3, the path of the book4. Book Display5, Release6, import others book error and introduction7, related documents ———————————————————————-
1, do not login, click Do thi
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