powershell lessons

Preface "This book is written by a compiler designer for senior C + + programmers. The assumption behind this book is that programmers who understand the C + + object model can write code that is less prone to error and more efficient. ” It is because of the loss in the actual programming that I feel that reading this book is very necessary, such as a previous blog post: http://blog.csdn.net/jiange_zh/article/details/51871782 If you had read this book, you would not have been confused. Here are

Yesterday to Anhui Susong a customer to do maintenance experience and lessons customer's database server would have been good, and I was trying to show someone how to install Oracle's clients. Oracle client installed on the server, half of the time I suddenly felt I found a great error: Oracle server can no longer install Oracle client, I quit but late: fee management system can not connect to the database, PB can not connect to the database, DBA

Review the mistakes made by zcom over the past year and share some of the lessons of last year. The biggest mistake is losing focus . We did a lot of acquisitions last year, we made a lot of investments and even invested in an in-house media company. The mode of their magazine is to put a magazine rack in the hotel room, and put their own and outside magazines to sell ads. They want to replicate Jiangnan spring's niche pattern, where we felt there was

that the user can complete the operation, but also these dangerous operations with split line and normal operation of the Division, reduce the possibility of user misoperation, the recent user use of this kind of problem is much less. Have previously shared a confirmation page design in Google Reader series, if you look again may avoid this mistake ~ Confirmation Page Design (confirmation alert) (i)--timing of use Confirmation Page Design (confirmation alert) (ii)--the choice of form

In my daily work, I have seen many COM codes written by different developers. I was amazed by the many creative ways of working with COM, and some of the clever code that made COM work might not even have occurred to Microsoft. Also, seeing some mistakes repeated again and again made me frustrated. Many of these errors are related to thread and security, and this is exactly the two areas that are missing from COM documentation. If you do not plan carefully, they are also the most likely to encou

Tags: many direct span data AC content close Basic access1. What knowledge has been learned in this lesson?(1) Database creation: Create empty data directly, create a database from existing files, and create a database using a template.(2 basic operation of the database: the opening of the database (the default) exclusive mode, read-only mode, and exclusive read-only mode) are turned off.(3) Basic maintenance of the database.(4) The Access data type.2. What are your experiences?Recognizing the m

file,Both sides of the user do not correspond, resulting in the inability to login, and then find the appropriate solution on the Internet, most of the solution to the use of single-user mode to reset the password, but the server in the customer's company, but alsois to contact them to solve, no way, things have reached this point, can only solve, so later trouble customer company maintenance personnel to deal with, very sorry.Online query, found that they are not a person, but this problem, I

# #发送邮件Fiecho "' Date +%t ' 502 $c _502"disk.sh Content#! /bin/bash# #Writen by alex##Rm-f. /log/disk.tmplang=enFor R in ' Df-h |awk-f ' [%]+ ' {print $} ' |grep-v use ' # #以一个或多个空格或% as delimiterDoIf [$r-gt] [$send-eq "1"]Thenecho "$addr ' date +%t ' disk useage is $r" >> /log/disk.tmpFiIf [-F. /LOG/DISK.TMP]ThenDf-h >>. /log/disk.tmp/bin/bash. /mail/mail.sh $addr \_disk $r. /log/disk.tmpecho "' Date +%t ' disk useage is Nook"Elseecho "' Date +%t ' disk useage is OK"Fi [%]+ represents o

later[[email protected] ~]# date-d "+1day" April 18, 2018 Wednesday 21:46:48 Cst[[email protected] ~]# date-d "+1day" +%f2018-04-18date-d "-1 days" a day agodate-d "-1 month" Month ago # #年year[Email protected] ~]# date-d "-1 month" +%F2018-03-17date-d "-1 min" A minute ago # #小时hour, seconds second[[email protected] ~]# date-d "-1 min" +%t21:47:09[[email protected] ~]# cal April 2018 1,234,561 2 3 4 5 6 78 9 10 11 12 13 1415 16 17 18 19 20 2122 23 24 25 26 27 2829 30 20.4 variable

action (U)10, replace all the etc in the entire file with a CTE (1, $s/etc/cte/g)11, move the cursor to line 25th, delete the string "ly" (25G then press J to move the cursor to the right to find "lyl", press V to select, then press x)12, Restore previous action (U)13, delete line 50th (50G DD)14, Restore previous action (U)15. Delete all contents of 第37-42 (37G 6DD)16, restore previous action (U)17, copy the contents of line 48th and paste it below line 52nd (48G yy 52G p)18, restore previous

Tags: LinuxEight weeks three sessions (March 28)10.32/10.33 rsync via service sync10.34 Linux system logs10.35 Screen ToolExtended Linux log File Explorer Logrotate http://linux.cn/article-4126-1.html Xargs Usage Detailed http://blog.csdn.net/zhangfn2011/article/details/6776925 10.32rsync synchronization via service (UP)Open two virtual machines, a machine 192.168.133.130,b machine 192.168.133.130, two machines can communicate with each other.A machine file is synced to machine

/wtmpUsed to view the correct login history, he is a binary file that cannot be viewed by cat and can only be viewed with last.LASTB command to view the user who failed the login, the corresponding file is/var/log/btmp/var/log/secureHe is the log that logs the login failure. He is also a binary file and cannot be viewed by cat./var/log/secure Security LogHe logs log-in related, Pam-related, and so on. If someone has hacked our device, it will also be recorded in this file.Screen toolVirtual Term

315.1 FTP Introduction15.2 using VSFTPD to build FTP service (top)Install the VSFTPD software package, the command is as follows;Create a virtual user with the following command:Edit the file virtual user's password file.Write content, odd behavior user command, even behavior password.Need security, not everyone can read, set permissions, command as follows:Go to DirectoryTo the first user, create the first configuration file. The configuration file and user name are the same.Copy the following

PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMANDroot 1 0.0 0.6 128164 6824 ? Ss 5月06 0:02 /usr/lib/systemd/systemd --switched-root --system --deserialize 21root 2 0.0 0.0 0 0 ? S 5月06 0:00 [kthreadd]root 3 0.0 0.0 0 0 ? S 5月06 0:00 [ksoftirqd/0]....... How to see if a process is running, as in the following example:[[Email protected] ~]# PS aux | grep nginxRoot 44476 0.0 0.0 112676 984 pts

. The disadvantage is that the name of the process is not displayed.Linux under Grab BagGrab Bag Tool tcpdumpSee which packages are coming in. And the flow of data, length. The default is TCP packets, if you find a lot of UDP packets are likely to attack. Eg DDos UDP flood. Access to professional anti-attack devices or services only.TCPDUMP-NN NIC Name-nn the first n means that the IP is displayed as a number without displaying the hostname.Time source IP and port > Destination IP and port: Pack

Or we can say C #? Since PowerShell is from C #. For sure the subject was aganist itself, according to belong page of MSDN, the Isfixedsize Arrays.Https://msdn.microsoft.com/en-us/library/system.array.isfixedsize (v=vs.110). aspxThat means the number of elements in a single array is fixed, we can use below codes to add new elements but it actually C loned a new array and resized it, the address pointing is broken.$t = 1..2$r = $t $r[1] = 9$t# Output o

Key points:A) InlineScript activity has active common parameters, but does not have PowerShell common parameters, and commands and expressions in the InlineScript script block do not have workflow capabilitiesb) The default InlineScript activity executes in a separate process rather than in the same process as the workflow, but can be controlled using the parameter outofprocessactivity, if the related configuration needs to be deleted or restored Inli

Tags: PowerShellCan insist on seeing the students here, I believe that the use of PowerShell command should not be unfamiliar, because the contents of the later more complex, so must be familiar with PowerShell commandHere to prepare some basic topics, interested must be hands-on operation : How to view the Wuauserv service health status How to stop the Wuauserv service How to view the Expl

[Original] NuGet prompts "The PowerShell host cannot be initialized. If you set your PowerShell execution policy to AllSigned, open the package management console first to initialize the host". Solution: nugetpowershell Symptom: Methods such as setting AllSigned on the Internet are invalid .. Later, I thought it might be related to the command line version compatibility. Then I found a ForceV2 setting

-----provide ad\exchange\lync\sharepoint\crm\sc\o365 and other Microsoft product implementation and outsourcing, qq:185426445. Phone 18666943750Requirements: Sometimes we need to compare the CSV file report automatically acquired daily by the PowerShell program to determine what happens every day, as follows: We compare the column "Computer name" of the automatically generated CSV file before and after two days.The script is as follows:Diff-referenceo