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usageMount MountHead displays the first few lines of content by default showing the first 10 rowsHead *5/etc/passwd view Top 5 linesTail display the contents of the last few rows default last 10 rowsTemporary: Close the currently running/etc/init.d/iptables stopPermanent: Turn off boot fromChkonfig iptables offLl/var/log/secure # User access to the system records, who at what time to link your server, when to link the#安装lrzszYum Install Lrzsz-yRZ #wi
the packageGzip-d test.tar.gz; # unzip "test.tar.gz" to "Test.tar" tar -xf Test.tar; # untie the "Test.tar" packageThe above two steps can be combined as:TAR-ZXVF. tar.gz; # Unlock a GIZP compressed package tar-xvf . tar; # untie A tar bagawk commandAwk is a programming language for working with data and generating reports. The general use format is:awk ' {pattern + action} ' {filenames}The contents of the file Test.txt are as follows, the corresponding partition symbol is t
;>": similar to the previous one, just write the file in Append mode " " "Command%n%c file": Command output redirected commands,%n file descriptor, default value is 1,%c redirect, file destination. Examples of several complex redirects: REDIRECT standard error to standard input command 2>1 The first file as standard input and as standard output command Use the file d
1. If a > and a file name are appended to any of the commands (not necessarily pre-existing), the result of the command is sent to the file. Such as: $ls/usr/bin > ~/unknown If the file already exists, the output of the LS command overwrites the original file content. If you use the CSH and tcsh shell, the following methods can be used to avoid overwriting, $set Noclobber Under Bash, you can use the following comm
. WinDOS must have an extension, open in a way. But Linux still has some files that have suffixes, which is only convenient for the administrator to differentiate. These suffixes are optional.EXE to linux,linux cannot be executed. cannot be identified.All storage devices in Linux must be mounted before they can be used. Includes hard drive, u disk. Disc. Unlike Windows Auto-recognition.Programs in Windows cannot be installed and run directly under Linux. It is two completely different operating
: $ less/etc/servicesPage UP and PAGE upPage DOWN one PAGE down↑ A one-way upward↓ a downward turnYou can also search by pressing/entering keywords to find out what to look for by pressing N (next).File Processing command: HeadCommand name: HeadCommand path:/usr/bin/headExecute Permissions: All UsersSyntax: head [filename]Function Description: Displays the first few lines of the file-n Specifies the number of rowsExample: $ head-n 20/etc/servicesFile Processing command: TailCommand name: TailCom
-W mandatory PATTERN only matches words exactly"The pattern is inside."x all files under this directoryI was searching for some results under the Android source code:5.unrar commandNote: The Unrar command default system is not available, you must add the Unrar program, with the sudo apt-get install Unrar method installed Unrar program.For unrar files, we see still a lot of, but Linux does not have its own program to process RAR compressed files, so it is important to master this method.Usage:
remove all current Ltib project files, and it does not delete any files that share common areas.This mode typically uses the GIT version so that you can go back to the selection screen of the target platform and compile a different target.4.2.7 - m releaseEncapsulates the current LTIB project as an ISO image and does not require network access.By default, only the Config/platform/host/ltib_preconfig andconfig/platform/#PLATFORM/defconfig The enabled package is included in the pkgs directory of
Find (2) for Linux commands) The previous article has introduced the test of expressions, which is the core of the find command. Now we will introduce the options and actions of expressions.(1) options -D,-depth: the two serve the same purpose. man's manual and many blogs say that their role is to first find the current directory file and then find it in its subdirectory. However, I tried it many times and
Other operation commands in wubantu (2), wubantu1. Search for files The find command searches for files that meet the conditions in a specific directory. Find [path]-name "*. py" find the file with the extension name ". py" in the specified path, including subdirectories If the path is omitted, search in the current folder Wildcard characters can also be used. 2
Linux file management commands in a detailed and continued:I. Copying and moving filesCP:CP SRC DEST-r: Copy directory to file-F: Forced replication-I: Interactive-P: Keep the original file attributes unchanged-A: Archive replication, often used for backupDescription1. A file to a file, multiple files to a directory;2. By default, you can only copy files to the directory, you cannot copy directories to file
Introduction to the CD commandThe CD command can be said to be the most basic command in Linux, the other command statements to operate, are based on the use of the CD command.Therefore, to learn the common Linux commands, the first step is to learn how to use the CD command skills.command FormatCD [DirName]Command FunctionToggle current directory to DirNameCommon examplesExample 1: Entering the system root directoryCommand:Output:[[Email protected] ~
] ~]# umask 011// Change umask value[Email protected] ~]# umask0011[Email protected] ~]# umask 022Chown Command[Email protected] ~]# ls-l-rw-r--r--. 1 root root 48308 Jul 2 23:02 1.txt[Email protected] ~]# chown Wangchao 1.txtchown:invalid User: ' Wangchao '// no such user[email protected] ~]# useradd Wangchao// Create user Wangchao[email protected] ~]# Groupadd user1// Create a group User1[email protected] ~]# chown:user1 1.txt// change file group to
Linux User management commands (version 2) and linux User ManagementAdd User 1. useradd-set Option username [-D view default parameters] Option: U: UID (which must not be in the system] G: Default User Group GID [preferably] G: specify multiple groups to which the user belongs. You can specify the department to which the user belongs] D: Specifies the home directory] S: Command Interpreter Shell [must be in
Simple tips and commands for linux beginners (2) ctrl + alt + d display desktop pwd display current path uname-r View machine kernel version touch new empty file/change file creation time if this file is not available new empty file, if cd... news nbsp; | simple tips and commands for linux beginners (2) ctrl + alt + d
Git common command 2 Add remote repositories (take GitHub for example)Login to the official website https://github.com, if not, go to register an account.Then create a new warehouseIn the repository name fill in learngit , the other remains the default settings, click the "Create Repository" button, the successful creation of a new Git repository:At the moment, this warehouse on GitHub learngit is still empty, and GitHub tells us that we can clone a n
----------. 1rootroot 1114Apr1416:41shadowdrwxr-xr-x.2root root4096Apr1417:59 Test1-r--rw-r--. 1nodelinuxnodelinux0apr1415:38 test10-r--rw-r--. 1nodelinuxnodelinux0Apr14 15:39test11-r--rw-r--. 1hadoophadoop0apr1415:49 test13-r--rw-r--. 1hadoophadoop 0apr1415:49test14-r--rw-r--. 1hadoophadoop 0Apr1415:49test15drwxr-xr-x.2 rootroot4096apr14 18:09test2drwxr-xr-x.2rootroot 4096apr1418:09test3//list file types [[Emailprotected]tmp]#find -typef|xargsfile./t
Redis's official website Http://redis.io is an important resource for Redis, and all the commands are listed here http://redis.io/commands.1. Database Selection command:SELECT index //select which database to use for the current connectionDefault configuration The next Redis-server service opens 16 databases with the index bit 0~15, which can be selected using the Select command, and the REDIS-CLI connecti
7 21:47:06 EDT on PTS/2# Open the vim process with nice value[Email protected] ~]$ nice-n vim file1 [1] 47037# Check in the background job there's just the process[Email protected] ~]$ jobs[1]+ Stopped nice-n vim file1# View the vim process Nice value and priority value[Email protected] ~]$ PS Axo Pid,comm,ni,pri,rtprio | grep vim 47037 vim 10 9-# Adjust Nice value to current priority + ( -9), and 9-9=0[[email protected] ~]$ Renice-n-9 47037renic
# ID # Displays the ID of the current user and user group# WHO # Displays user information currently logged into the system#su change user identity[Email protected]/] #su chenlly[[Email protected]/]#cat/ETC/PASSWD File StructureRoot:x:0:0:root:/root:/bin/bashchenlly:x:1000:1000:chenlly,,,:/home/chenlly:/bin/bashSshd:x:114:65534::/var/run/sshd:/usr/sbin/nologinOracle:x:1001:1001::/home/oracle:/bin/bashWhere 1001 corresponds to the UID and GIDUid:id RangeWhen the UID is 0 o'clock, this account is
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