unix administration tutorial

management, file management, package management, and other basic automation requirements than tedious manual work. In this scenario, Ruby is very useful. It has a very good library to meet this point. For this article, I assume that the reader has the application knowledge of Ruby. The basic examples provided here use pure Ruby, so can any UNIX-like support in Ruby? System and Windows? Run on. For more advanced Cfruby examples, you need to be able t

=" 0 "alt=" wps3D04.tmp "src=" Http://s3.51cto.com/wyfs02/M01/9D/80/wKioL1mBORmy-D4fAAD7Ccj8EnA633.jpg "width=" 574 "height=" 454 "/>18, the front we talked about is the operation of the graphical interface, in fact, for Windows I prefer the GUI operation, but in order to improve operational efficiency, PowerShell CLI is a good thing, let's use the command line migration to try:MOVE-VM testserver01.testad.local-computername win2012r2-test03-destinationhost TestServer02.testad.localThis article f

Chapter 23rd UNIX File SystemNamed pipe Mkfifo:mkfifo [-M mode] pipe. Named pipes must be created explicitly and will not disappear (the RM command can be removed).The proc file is a pseudo-file used to access kernel information. For example, if a process ID is 1952, the process-related information can be found in a file in the/proc/1952 directory.The VFS (virtual file system) implements the details of file processing.24th Directory Operations~ Repres

1:unix file Type-3 typesNormal files (regular files): Text files (plain text, scripts, source programs, configuration files, HTML, etc.), binary files (multimedia files, databases, etc.)Directories: for organizing filesPseudo-file: does not store data for the purpose of providing a service. Divided into three kinds:Special files: Device drivers, file representations of physical devices (keyboards, monitors, etc.)Named pipes: Directing the output of on

Before reading, please take 30 seconds to view the preface (in the first and second chapters) UNIX Linux University tutorial-Chapter 1 and II study notes about UNIX what is Linux? What is UNIXUNIX Linux University tutorial-Chapter 3 and Chapter 4 Study Notes UNIX connect

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time, you can set the parameters for the first three transition times to 0.mktime () functions are useful for date arithmetic and validation, and it can automatically input the bounds of the administration. As shown below: Copy the Code code as follows:echo Date ("Y-m-d", Mktime (0,0,0,12,36,2008)). " \ n "; Date more than 31 days, calculated after output 2009-01-05echo Date ("Y-m-d", Mktime (0,0,0,14,1,2010)). " \ n "; Month exceeds December, calcul

MYSQL Tutorial: UNIX Timestamp and date conversion function tip: UNIX timestamp to date using the function: FROM_UNIXTIME (), date to UNIX timestamp using the function: UNIX_TIMESTAMP (). function for converting UNIX timestamp to date: FROM_UNIXTIME () select FROM_UNIXTIME (

, select 1 24.F2 Next 25. Select the disk, continue F2 and use the entire disk to continue F2 26. Set the name, use the TAB key to choose to actively configure the network by F2 27. Choose Asia to continue F2 28. Choose China to continue F2 29. Select PRC to continue F2 30. Use the default time to continue F2 31. Enter the root password a

following configurations are the same! in theVi/etc/securettyadd a few lines to the last face, as shown below:[email protected] ~]# Vi/etc/securetty24 pts/0pts/1pts/2pts/3pts/4//Comment out/etc/pam.d/loginthe second line, as follows:1 #%pam-1.02 #auth [User_unknown=ignore success=ok ignore=ignore Default=bad] pam_securetty.so//Comment out/etc/pam.d/remotethe second line, as follows:[email protected] ~]# Vi/etc/pam.d/remote1 #%pam-1.02 #auth Required pam_securetty.soThird, we will configure the

. Start the terminal40. Enter the pathwatermark/2/text/ahr0cdovl2jsb2cuy3nkbi5uzxqvaxrjyxn0y3bw/font/5a6l5l2t/fontsize/400/fill/i0jbqkfcma==/ Dissolve/70/gravity/southeast "/>41. Compile and run42. Write a C + + code 1,CC43. Print statements, C + +44. Print out the results45. Drive HelloWorld#include #include Module_license ("Dual BSD/GPL");//Follow the Linux protocolstatic int hello_init (void){PRINTK (Kern_alert "Hello, world\n");//Print driver informationreturn 0;}static void Hello_exit (void

the time to race from start to finish. It's like our program starts, we pinch the stopwatch before some easy-to-create performance bottlenecks ---- call the clock () function, Then pinch the stopwatch. Evaluate the severity of the bottleneck by calculating the interval of two pinch meters. 6. Talk about clock_tclock_t is a type defined in as an alias of a fundamental arithmetic type.clock_t is a type defined in the CTime header file as an alias for a basic data type. The header file clock_t de

Emacs The following describes a text editor called Emacs, which is a free software provided by the GNU organization. It is a very good compiler and can be well integrated with other UNIX tools. Many editors have many reasons to explain how good they are, but we will not discuss this issue here. If you want to start using Emacs to edit a new file or an existing file, just enter the following command at the Unix