linux practice exam

;. NET CLR 2.0.50727;. NET CLR 3.0.4506.2152;. NET CLR 3.5.30729) "59.33.26.105--[08/dec/2010:15:43:56 +0800] "get/static/images/photos/2.jpg http/1.1" 200 11299"Http://oldboy.blog.51cto.com/static/web/column/17/index.shtml?courseId=43" "mozilla/4.0 (compatible;MSIE 6.0; Windows NT 5.1; SV1;. NET CLR 2.0.50727;. NET CLR 3.0.4506.2152;. NET CLR 3.5.30729) "59.33.26.105--[08/dec/2010:15:44:02 +0800] "get/static/flex/vedioloading.swf http/1.1" 200 3583"Http://oldboy.blog.51cto.com/static/flex/adobe

zcvf/backup/etc-$ (date +%f). tar.gz/etc/1.10Add a virtual userMysqlSpecifyUidto be888Useradd-u 888-s/bin/nologin MySQL1.11Write timed Tasks,every night12Click Delete/var/spool/postfix/maildrop/directory under7days before the file. Script Name: rmmaildrop.sh script content:/bin/rm $ (find/var/spool/postfix/maildrop/-type f-mtime +7)Scheduled Tasks: XX * * */bin/sh rmmaildrop.sh>>/dev/null 2>11.12to bealex888User ConfigurationSudopermissions that require you to run all life without having to ent

It's mainly about rsync.On-Machine experimentand write some scripts.Here is the script for automatic backup#bak Site and logscd/var/html tar zcf/backup/www_$ (date +%f). tar.gz./wwwCd/app tar zcf/backup/logs_$ (date +%f). tar.gz./logs#bak SYS confCD/ tar zcf/backup/etc_$ (date +%f). tar.gz./scripts/bin/cp/var/spool/cron/root/backup/#rsync data to BakserverRsync-avzp/backup/rsync [Email protected]::backup/--password-file=/etc/Rsync.password#del data 7 days agoFind/backup-type f-name "*.tar.gz"-

("Pthread_mutex_unlock Error errmsg[%s]\n", Strerror (errno)); Exit (0); } //if (Pthread_cond_broadcast (cond_a)) if(Pthread_cond_signal (cond_a)) {printf ("pthread_cond_broadcast Error errmsg[%s]\n", Strerror (errno)); Exit (0); }} printf ("\ n"); Pthread_exit (NULL);}intAppinit () {G_flag=0; Pthread_mutex_init (Mylock, NULL); Pthread_cond_init (cond_a, NULL); return 0; }intAppdone () {Pthread_cond_destroy (cond_a); Pthread_mutex_destroy (Mylock); return 0;}intMainintargcChar*arg

1.1 Write the purpose of the file or directory1./etc/hosts local IP domain name resolution2./etc/sysconfig/network Modify Host Name3. Automatic mounting of the/etc/fstab system4. boot file for/etc/rc.local boot5./etc/inittab System Operating Sector6./ETC/INIT.D Storage Service Script7./etc/profile Environment variables8./usr/local The default installation path9. Management Log for/var/log/message systemSecurity Log for/var/log/secure systemOne./var/spool/cron/root root user's scheduled task prof

Linux is just a personal hobby, before a little touch, the school of this part of the learning arrangements in the next semester, and they are now ready to practice, many companies on the operating system and Linux inspection is more, whether in the written test or interview, is a summary of their own knowledge and review it, From all over the internet to collect

Linux Message Queue practice (2) and linux Message Queue practiceMessage Queue Functions #include Msgctl Function Function: gets/sets Message Queue information. Prototype: int msgctl(int msqid, int cmd, struct msqid_ds *buf); Parameters: Msqid: ID of the Message Queue returned by the msgget Function Cmd: the action to be taken (see below) Return Value:

Linux multithreading practice (2) and linux multithreading practicePOSIX thread Library Functions related to threads constitute a complete series. Most functions are named as "pthread _". To use these function libraries, you must introduce the header Pthread_create Create a new thread int pthread_create(pthread_t *restrict thread, const pth

Linux semaphore practice (2) and linux semaphore practiceSemaphores API Comprehensive Practices // Practice 1: encapsulate the PV primitive union mySemUn {int val; // Value for SETVAL // struct semid_ds * buf; // Buffer for IPC_STAT, IPC_SET // unsigned short * array; // Array for GETALL, SETALL // struct seminfo * _

Linux Message Queue practice (3) and linux Message Queue practiceIntegrated Use of Apis // The parent process sends a message. The child process receives the message struct msgBuf {long mtype;/* message type, must be> 0 */char mtext [104]; /* message data */}; const int MSGNUMBER = 10; int main () {// get a key key_t msgKey = ftok ("/tmp/mySeedFile ", 'F'); // g

Install mysql in linux [practice edition] And linuxmysql practice Edition [Environment and file version] Red hat linux v6.2 Mysql linux x86-x64 v5.6 [Prepare required files] First, go to the official website to download the linux

First, homework (exercise) content:1, elaborated the Linux HA cluster use background;2. Summarize the system composition of Linux ha cluster and the working model of HA cluster;3, through the lamp combination, based on heartbeat V2 CRM implementation ha; requirements, deployment wordpress, any data used in the edited article can be accessed normally after the node is switched;Second, completion time:Before

Note: This assignment is applicable to employment classes and package classes.I. Homework (exercise) content:First, the actual case (practice) content1, describe the CENTOS6 system boot process;2, Description/etc/rc.d/sysinit script function;3. Summarize the usage of the Text Processing tool sed and awk (must accompany the example)4, write a script, generate 10 random numbers, and according to the order from small to large (requires at least 2 Chinese

Linux OPS Practice-September 5, 2015 Course Assignment (practice) ScheduleTask Schedulerperform a task at a time in the future at batchperform a task periodically crontabEmail Servicesmtp:simple Mail Transfer Protocol Simple Mail Transfer ProtocolPop3:post Office Protocal 3 Post Office Protocol version 3imap4:internet Mail Access Protocol Interactive Data messagi

service:Sudo/etc/init.d/ssh restart(4) Run Puttygen.exe Select Generate key pair (private key exists on this machine, copy public key)(5) Copy the public key contents, write to the remote host, use the command vim ~/.ssh/authorized_keys(6) Modify the configuration file by command Vim/etc/ssh/sshd_config and add two lines at the bottom:Pubkeyauthentication YesAuthorizedkeysfile. Ssh/authorized_keysAfter you save and exit, disconnect.(7) Once again using putty to connect, in the Connection->data

First, homework (exercise) content:1. Summarize the detailed usage method of the task plan (at, crontab) on Linux system;2, every Monday to Saturday 3:20 A.M., run the CP command to archive the/etc/directory, storage location is/BACKUPS/ETC-YYYY-MM-DD;3, every Sunday 2:30 A.M., run the CP command to backup the/etc/fstab file, the storage location is/BACKUP/FSTAB-YYYY-MM-DD-HH-MM-SS;4, every night 12 o'clock, get all the lines in the/proc/meminfo file

First, homework (exercise) content:1. Summarize rpm and Yum to implement the package management function.Requirements: Homework to be illustratedSecond, completion time:Before September 15, 2015.Third, the way of submission:Please submit your job's post link address in the form of a comment blog. Formats such as:Student number + name http://mageedu.blog.51cto.com/4265610/1687589This article is from the "Marco Education Linux operation and maintenance

access from 172.16.0.0/16 (which can be set according to their network conditions);Second, completion time:Before October 24, 2015.Third, the way of submission:Please submit your job's post link address in the form of a comment blog.Formats such as:Student number + name http://mageedu.blog.51cto.com/4265610/1687589This article is from the "Marco Education Linux operation and maintenance training" blog, please make sure to keep this source http://mage

Linux kernel Analysis Practice four--elf file format analysisI. Overview1.ELF full name executable and linkable format, executable connection format, elf format files are used to store Linux programs. The elf file (target file) format is mainly three kinds: Redirected files: The file holds the code and the appropriate data to create an executable file or

Linux Practice--Program hackOne, Master NOP, JNE, JE, JMP, CMP assembly instructions machine code The NOP:NOP instruction is the "null instruction". When executing to the NOP instruction, the CPU does nothing, just as an instruction to execute the past and continue executing a command behind NOP. (Machine code: 90) JNE: Conditional transfer directives, if not equal, jumps. (Machine code: 75)