basic coding commands

all properties are maintained, equivalent to the-RLPTGOD,-A option followed by a–no-option This means that one of the-rlptgod is closed, for example-a–no-l is equivalent to-rptgod-R subdirectories are processed recursively, primarily for directories, if a single file is not required to add-r, but the transmittedYes directory must be plus-r option-V Print some information, such as rate, number of files, etc.-L reserved Soft link-L treats the soft link as a regular file, and if there is a soft co

--SYSTOHC set the hardware clock to the current system time if one of the times is wrong, we can modify it by the above command. [[email protected] hzh]# Hwclock--hctosys Set the system time corresponding to the hardware time.[[email protected] hzh]# Hwclock--SYSTOHC set the hardware time corresponding to the system time. If two times is wrong, we can set the time ourselves [[email protected] hzh]# hwclock--set--data= "month/day/year: minutes: Seconds"Yum related operations:Yum install Yum check

another file or directory [Email protected] app]# cp/etc/passwd/app/[[email protected] app]# lspasswd[[email protected] app]# cp-r/etc/sysconfig/network-scripts//app///-r recursively copy directory and all internal content[[email protected] app]# lsNetwork-scripts passwd RM//delete files and directories [[email protected] app]# RM-RF *//r Force delete F Delete Directory MV//change file or directory commands or m

create a hard link to a file)Ln-s a soft connection to create a file (can be created on a directory)Create and delete usersUseradd Creating a userUserdel Deleting a userSU can switch usersText viewCat View File ContentsMore Paging View filesWC Statistics File Data-L Statistics Row only-W only counts the total number of words-M only counts the total number of charactersgrep text filteringVim commandExit: Q exit: q! Forced exit: Wq Save ExitZZ Save and exitZQ Do not save exitCursor movementH move

The XWindow was so miserable today that we finally returned to the ftp command line (including basic FTP commands)-Linux Enterprise Application-Linux server application information. Here is the details. I want to compile the kernel today. My FC9 cannot go to the Internet. When the new kernel is on XP, the kernel is uploaded to FTP (the lab belongs to the Intranet, you want to download it from FTP to FC. Wel

Finally, I know the basic commands of linux-general Linux technology-Linux technology and application information. The following is a detailed description. Ls is the meaning of viewing Pwd indicates the current position. Du is the amount of extra disk space. Clear is used to clear terminal commands when there are many input and output on the screen. Cal is to

%} #View CodeIv. Pycharm Creating a Django Project1. Menu bar file-->new Project ...Fill in the Project save location, application name.2. Change setting.pyComment The ' django.middleware.csrf.CsrfViewMiddleware ' out, otherwise the following situation will occur.3, settings.py in the templates in the dirs need to check whether it is empty, if empty, add on Os.path.join (Base_dir, ' templates ').This is not set in the template, set template to find such as path, open Settings.py-tpl, add o

Routine basic maintenance commands for Oracle RAC Status of all instances and services $ Srvctl status database-d orclInstance orcl1 is running on node linux1Instance orcl2 is running on node linux2 Status of a single instance $ Srvctl status instance-d orcl-I orcl2Instance orcl2 is running on node linux2 The status of the global Naming Service in the database $ Srvctl status service-d orcl-s orcltestServi

Basic linux commands mkdirWhat is mkdir? mkdir is short for makedirectories and is a command used to create a directory in linux. 1. Command Format: mkdir [Option] Directory... 2. Command function: When mkdir is followed by the directory name, the new directory is created under the current directory. When mkdir is followed by an absolute path, the new directory is created under the given path directory. Whe

Notes on basic linux commands0. ls-lhDisplay Properties of files in the current directory in a user-friendly manner1. Link:Hard Link (itself is the file pointer, equivalent to the original file pointer)Ln filename1 filename2Soft link (itself a pointer, creating a pointer to the original file)Ln-s absolute path filename22. Search:File SearchLocate (fast, but only search by file name)Search/var/lib/mlocate in the database and update it once a day.Force

Ifconfig: Configuring network devicesifconfig eth0 192.168.1.1Echo: Display a piece of textEcho $PATHEcho-e "A/TB/TC/ND/TE/TF"TTY: Display the file name of the terminal link standard input deviceTtyTty--versionSTARTX: Start x WindowsStartx-w (Force start x session)Export: Output shell variable or shell function as environment variable EXPORTPWD: Displays the current user's directory Pwdhistory:[craw] Displays the specified number of history commands,

First, Linux basic commands and how to get helpFormat of the 1.Linux commandCommand + options = parameterA) command: Tell the Linux (UNIX) operating system what to do (execute).b) Option: Describes how the command runs (you can change the function of the command). The options section starts with a "-" character.c) Parameters: Describes what the command affects (action) (such as a file, a directory, or a par

(255,255,255); "alt=" Qq20170715092017.png "src=" Http://upload-images.jianshu.io/upload_ images/6886239-2a9ea25afaa2eb32.png?imagemogr2/auto-orient/strip%7cimageview2/2/w/1240 "/> on the relationship between partition and mount point, there is a word that can help us understand: When a directory is not mounted separately, the contents of that directory are stored on a partition that is mounted on its parent directory similar to the view disk partition command: cat/proc/partitions, DF Where

/dev/cdrom/mnt/Device mount point directory entry37.DF command to view disk space usage-H human-readable Human readable#linux下面查询帮助的方法1.man command2. Command--help###mv/data/root/1. Generally indicates the contents of the directory itself and below the directorymv/data//root/2. Generally indicates the contents below the directory# # #特殊符号1.. (dot) indicates the current directory/path2 ... Represents the parent directory of the current directory3. # indicates comments (Linux ignores, skips)4. "(a

The free command shows how much memory is being used in the current system in the following format: Free[-m/-g]Displays the current memory usage in units of M[Email protected]/]# free-m Total amount of memory consumed the amount of memory that the process shares in the memory volume of the disk cache CacheWho commands to view the number of users currently logged into the systemLast command to view all system log-in record formats: la

back to the top level directory, CD. /.. /.. Go back to Level three, CD-go back to the last operating directory and know that these commands are much more convenient when you switch directories back and forth.The 8.SCP command is a copy of the transfer file between two machines, which refers to a Danale blog to introduce, http://www.cnblogs.com/peida/archive/2013/03/15/2960802.html personal feeling written very good!9. File permission Description: Dr

Linux provides a number of commands that can be used to simplify our work, perhaps in the graphical interface to click on the mouse more than 10, and in the Linux system, a command can be easily resolved. Therefore, it is necessary to work on a Linux system using the commands provided by the system. To really understand Linux systems, you have to learn from Linux commands.The command format in a Linux syste

files: TouchUsers can create an empty file via touch, with the following demo:Touch Hello.txtDescriptionAn empty file named Hello.txt is created under the current pathThere is no strict suffix (format) in the Linux system, so you can name any file name when you create it==================================================================Note: The above course notes for the study of the teachers in the classroom study notes, if necessary to reprint, if you need full notes, please contact me privat

Number of blocks allocated to slab Used_chunks Number of blocks already assigned to item Free_chunks Number of blocks not assigned to item Free_chunks_end Number of blocks currently available mem_requested The number of bytes requested to be stored in the slab Active_slabs Number of slab already allocated total_malloced Number of bytes already allocated to slab Item is

. Moving and renaming files: MVCommon options:-I: Interactive-F: MandatoryExample: [[email protected]/]# MV/HOME/PASSWD/HOME/PW[Email protected]/]# Ls/homePW python test User6 Zhang26. Delete: RMCommon options:-I: Interactive-F: Force delete-R: RecursiveExample: [[email protected]/]# RM/HOME/PWRm:remove regular file '/HOME/PW '? Y27. Show Directory tree: Tree-D: Show only directories-L level Specifies the number of levels to display-P Pattern: Displays only paths that are matched by the specifie