three musketeers painting

Common Uses of sed:Common Uses of awk:Common Uses of grep:In addition to listing compliance lines, and listing the next 10 lines.Grep-a Exception Kzfinance-front.logIn addition to listing compliance lines, and listing the first 10 rows.Grep-b Exception Kzfinance-front.logIn addition to listing compliance lines, and listing 10 rows before and after.Grep-c Exception Kzfinance-front.logDetailed reference:http://blog.csdn.net/xiaokang06/article/details/29880465Sed awk grep Three

Bashbor has a pile of n items, two people take turns from this pile of goods, the provision of at least one at a time, the maximum number of M. Finally, the winner wins (note: If n=m+1 anyway the latter wins) the first fetch remains to the opponent (M+1 ), you can win the final ******************************************************************************* Witzov game has two piles of various items, two people take turns from a heap or at the same time from the two piles of the same number of i

1.1 Overviewgrep is used primarily to find the lines of a keyword match1.2 Basic syntax1.2.1 Syntax[[email protected] ~]# grep [parameters] Configuration mode file1.2.2 Parameters[[email protected] ~]# grep [parameters] Configuration mode fileParameters-I: Ignore case-V: Take the inverse match-W: Match word--color Display Color1.3 grep uses[[email protected] ~]# grep root/etc/passwd filter out the root row in the passwd fileRoot:x:0:0:root:/root:/bin/bashOperator:x:11:0:operator:/root:/sbin/nolo

/nologin user listgrep "nologin$ '/etc/passwd | Cut-d:-f1Remove the user name of the user whose default shell is bash with the lowest user ID numbergrep ' bash$ '/etc/passwd | Sort-n-T:-k3 | head-1 | Cut-d:-f13, display/etc/inittab in the beginning of #, and followed by one or more white space characters, followed by any non-whitespace character line;grep "^#[[:space:]]\{1,\}[^[:space:]]"/etc/inittab4, display/etc/inittab contains: A number: (that is, two colons in the middle of a number) line;g

once before beginning the processing of text in a fileend{}: Only once after text processing is completeExampleAwk-f: ' BEGIN {print ' USER USERID '} {print $ ': ' $ $} end{print ' END file '} '/etc/passwdAwk-f: ' {print ' USER USERID ';p rint $ ': ' $ $}end{print ' END file '} '/etc/passwdAwk-f: ' begin{print ' USER UID \ n---------------'}{print $1,$3} '/etc/passwdAwk-f: ' begin{print ' USER UID \ n---------------'}{print $1,$3} ' end{print ' ============== '}/etc/passwdSeq Ten |awk ' i=0 'Se

pattern space!: Take a reverse conditions///: Supports the use of other separators, [email protected]@@,s###Replace tag:G: In-line global substitutionP: Show the rows that were successfully replacedW/path/to/somefile: Saves the result of the substitution success to the specified fileAdvanced Editing Commands:H: Overwrite the contents of the pattern space in the hold spaceH: Append the contents of the pattern space to the hold spaceG: Remove data from hold space to pattern spaceG: Append content

Accompanying notes:grep filteringSED fetch lineawk fetching columns1. grepgrep Lookupgrep-v Filter Finder Syntax: grep content parameter line number file-a displays matching rows and preceding rowsgrep 30-a 1.txt Display 30 front 10 lines-B displays matching rows and subsequent rowsgrep 30-b 1.txt-C Displays matching rows and displays the number of rows before and after matchinggrep 30-c 1.txt-I is case insensitive-E Filter Multiple strings-O output exact matching characters instead of the defau

"-mtime +5-exec rm {} \;Give a hint before deleting:[[email protected] tmp]# find. -name "*.pl"-ok rm {} \;Find the passwd file in the/etc directory and match the text for root[[email protected] tmp]# find/etc/-name "passwd"-exec grep "root" {} '; 'Root:x:0:0:root:/root:/bin/bashOperator:x:11:0:operator:/root:/sbin/nologinMatch the log file of the current directory and copy the log files to the/app directory[[email protected] tmp]# find. -name "*.log"-exec cp {}/app \;Find files in the/etc direc

Rows(5) Delimiter %: Full text $: End of text.: Cursor #,#: Specify range(6) Edit commandCut d^: To the beginning d$: to the end of the line DW: WordDD: Whole line #dw: multiple words #dd: Multiple lines after the cursord1g: To the head DG: to the end of the text %d: Full text 1,$: Full text., $: Cursor at the end of the textCopy y: Mode with deletePaste P:d is cut instead of deleted, so d can be pasted directly after PReplace delete s/grep/Replace, empty to delete/{i ignore case, G full text

Swarm-node1,swarn-master, the following only involves switching the environment does not provide code see 1.12.2 Swarm-master Building a cluster[Email protected]:~$ docker swarm initswarm initialized:current node (69NKAQU3IVFMTY5ISZ0UG0OIW) is now a manage R.to Add a worker to this swarm, run the following command: join --token swmtkn-1192.168. 1.80:2377'Docker swarm Join-token manager' and follow the Instructions.#同样token很重要, do not lose, Docker code hints are clear, join the cluster comma

includescommand word [options] [parameters]In this option is the equivalent of your choice, you choose how to look, or choose how to operate.The parameters can be multiple, that is, the target you are manipulating.and the [] representative can be removed, that is, no options and parameters, such as: You play the LS command in the current directory, it will default to view the current directory.The four most common options for LS are listed belowLs-a: Includes the name with the. The beginning of

=" "/>9. Egrep650) this.width=650; "style=" width:600px;height:311px; "src=" http://s5.51cto.com/wyfs02/M01/7A/3B/ Wkiom1alzv3dxflkaaakuzut3-k739.png "title=" egre.png "border=" 0 "height=" 311 "hspace=" 0 "vspace=" 0 "width=" alt= " Wkiom1alzv3dxflkaaakuzut3-k739.png "/>650) this.width=650; "style=" width:600px;height:121px; "src=" http://s5.51cto.com/wyfs02/M00/7A/3B/ Wkiom1alzabglkplaaapwvt7yh4258.png "title=" fd.png "border=" 0 "height=" 121 "hspace=" 0 "vspace=" 0 "width=" alt= " Wkiom1alza

example of finding at least one o, up to three O.Next is the location anchor: ^: Anchoring the beginning of the line $: Anchor Line End\: Anchor Word head\>, \b: Anchor endingThe anchor at the end of the beginning of the line is the same as the use of grep, where the anchor of the first ending is described here, as an example of the first anchor of the word.~]# egrep "\ The above is the regular expression of some basic usage, to skilled use of this expression to find this document, but also to

statistics for the specified Java processJstat-help|-optionsJstat-# jstat-options-class:class loader load statistics-compiler:JIT Compilation statistics-GC:GC-gcnew: cenozoic -gcold: The old age -printcompilation JVM Compilation Method Statistics[Interval: time interval, unit is milliseconds; count: The number of times displayed;Example:(1) Jstat-class 2745 1000 1000 display 1000 times in seconds, class load statistics(2) JSTAT-GC 2745 1000 1000 You can see how often large GC and small GC o

;Length (String) function: Returns the lengths of a given string substr (String,start[,length]) function: Takes a substring from a string, from start to the starting position for the length of the substring system (command) Function: Executes the system command and returns the result to the awk command Systime () function: The Systime function returns the number of whole seconds from January 1, 1970 to the current time (excluding leap years) ToLower (s) Function: Convert all letters in s to lowe

The advent of the Windows Server 2008 R2 RC release has made Windows Server 2008 R2 a step closer to the user. Many articles have introduced the latest features of the RC version, including the integration of Hyper-V 2.0, the number of support logical processors from 64 to 256, WAN file copy performance has also significantly improved, and so on. In addition, the RC version has a number of new functions for the management of enterprises have a very important role. This article will provide a de

Chinese Three musketeers: Chinput,minichinput,magicchinput. As we all know, the Chinese mainstream of Linux in the mainland is to use Chinput, because Chinput is mainly integrated in Tubrolinux, move it to redhat, need to modify a lot of places, also need pth,unicon-im support. It doesn't matter to the old Linux veteran, But to a lot of new Linux novice to bring a lot of trouble, and Chinput still have a lot of imperfections, some heroes in Chinput o

Top with awk, medium with SED, standard grep我们都知道，在Linux中一切皆文件，比如配置文件，日志文件，启动文件等等。如果我们相对这些文件进行一些编辑查询等操作时，我们可能会想到一些vi,vim,cat,more等命令。但是这些命令效率不高，这就好比一块空地准备搭建房子，请了10个师傅拿着铁锹挖地基，花了一个月的时间才挖完，而另外一块空地则请了个挖土机，三下五除二就搞定了，这就是效率。而在linux中的“挖土机”有三种型号：顶配awk，中配sed，标配grep。使用这些工具，我们能够在达到同样效果的前提下节省大量的重复性工作，提高效率。接下来我们就看一下sed的详细说明sed 是Stream Editor（字符流编辑器）的缩写，简称流编辑器。什么是流？大家可以想象以下流水线，sed就像一个车间一样，文件中的每行字符都是原料，运到sed车间，然后经过一系列的加工处理，最后从流水线下来就变成货物了。The Three Musketeers of Linux

grep grep "Oldboy" test.txt filter out Oldboy strings in the file-V Excludes selected charactersawk awk '/oldboy/' test.txt '//' filter out selected characters‘!/ /‘ ! The characters in awk that are selected for the inverse exclusionawk ' nr==20 '/oldboy/ett.txt ' nr==20 ' Take the line ' nr==20,nr==30 ' out of 20-30 rowssedsed ' /oldboy/d ' test.txt '//d ' excludes selected characters d means delete-I takes effect delete selection sed-n ' 20p '/oldboy/ett.txt-n ' 20p ' fetch line-N ' 20p,3

|head -3This statement indicates that the third and fourth paragraphs are summed and replaced by the seventh paragraphYou can also calculate a column's andhead -3 /etc/passwd |awk -F ‘:‘ ‘{(sum=sum+$3)}; END {print sum}‘Here we have selected the first three lines of the file, the sum of the third column separated by a colon, sums is a variable can be arbitrarily taken, end is a keyword similar to the shell script done, in fact, the command is equivalent to a simple script with a loop statementU