ofs desk

1. Regular Expression metacharacters of awk \ Code change sequence^ Start matching at the beginning of the string$ Start matching at the end of the string. Match with any single string[ABC] matches any character in [][A-ca-C] matches characters in the A-C and a-c range (in alphabetical order)[^ ABC] matches any character other than all characters in [].Desk | chair matches any one of desk and chair[ABC] [DE

metacharacters of awk/Code change sequence^ Start matching at the beginning of the string$ Start matching at the end of the string. Match with any single string[ABC] matches any character in [][A-ca-C] matches characters in the A-C and a-c range (in alphabetical order)[^ ABC] matches any character other than all characters in [].Desk | chair matches any one of desk and chair[ABC] [DEF] Association. Matches

.[[emailprotected] test]# sed -r ‘/^[[:space:]]*$/d‘ c.txtpasswd: Only one user name may be specified.passwd: Only one user name may be specified.passwd: Only one user name may be specified.passwd: Only one user name may be specified.19 "awk" is a huge text processing tool, self-made system that can be programmed -F Format Separator Built-in variables -NF the number of fields in the current record NR number of records read

, $logger _name, $level);return $instance;function amp;getwritersingleton ($name, $logger _name, $level = abc_debug) {Static $instances;if (!isset ($instances)) {$instances = Array ();} $signature = Serialize (Array ($name, $level));if (!isset ($instances [$signature])) {$instances [$signature] = Debugout::factory ($name, $logger _name, $level);}return $instances [$signature];function Attach (amp; $logObserver) {if (!is_object ($logObserver)) {return false;} $logObserver-gt;_listenerid = Uniqid

' If the separator symbol is a special symbolPrint a paragraph of characters# awk-f ': ' {print $1.txt} '# awk-f ': ' {print $3,$4} ' 1.txtDisplay specified characters# awk-f ': ' ofs= ': ' {print $3,$4} ' 1.txt# awk-f ': ' ofs= "#" {print $3,$4} ' 1.txtMatch character or string# awk '/r/' 1.txt# awk '/root|user/' 1.txtawk '/r*o/' 1.txt# awk '/r?o/' 1.txt# awk '/r+o/' 1.txt# awk '/r.*o/' 1.txtMatch a whole

/open "%l" . MPV2 WMP11. Assocfile.mpeg "%programfiles (x86)%\windows Media Player\wmplayer.exe"/prefetch:9/open "%l" . ms-one-stub Groove.SPFS.OneNoteStub "D:\Program Files\Microsoft Office\office15\groove. EXE "/onenotestub:"%1″ . msc Mscfile %systemroot%\system32\mmc.exe "%1″%* . msg outlook.file.msg.15 "D:\Program Files\Microsoft Office\office15\outlook. EXE "/F"%1″ . msi Msi.package "%systemr

type inherit the properties and methods of another reference type; Prototype inheritance chain: Box ==>> Desk ==>> Table; function box () { //box construction; this.name = ' Lee '; } function Desk () { //Desk construction; This.age = +; } Desk.prototype = new Box (); By creating a box instance and assi

from the above Code is that if the value pointed to by the address changes, the code compilation will fail? You can add * address = 100 before the function ends? (3) definition of Class const member variables Class desk { Const int price; Public: Desk (): price (10 ){} ~ Desk (){} }; Class desk { Const int price;

/usn-2647-1/*>Test method: AlertThe following procedures (methods) may be offensive and are intended only for security research and teaching. Users are at your own risk! Https://www.exploit-db.com/exploits/37292//*# Exploit Title: ofs. c-overlayfs local root in ubuntu# Date: 2015-06-15# Exploit Author: rebel# Version: Ubuntu 12.04, 14.04, 14.10, 15.04 (Kernels before)# Tested on: Ubuntu 12.04, 14.04, 14.10, 15.04# CVE: CVE-2015-1328 (http://people.ca

(f and--posix are commonly used)awk built-in variables$n: The nth field of the current record, for example, N is 1 for the first field, and N for 2 for the second field$: This variable contains the text content of the current line during execution "whole line"NR: Indicates the number of records, which corresponds to the current line number during executionFS: Field delimiter (default is space)OFS: Output field delimiter (default is space)NF ($NF): In

Awk is a programming language dedicated for text processing. yes, it is a programming language. It only serves text processing, so you cannot use it to write system software or scientific computing (of course, it can also do mathematical computing ), it can only be used for text processing. unlike SED, awk has the programming language features, including built-in functions, logical statements, and input and output statements. In fact, it looks like a C language, but all the functions are concent

line fourth3. Instances with begin, end and include FS, OFS A Awk–f "+" ' {print '} ' data.txt separates columns by the + delimiter and prints the first columnb Nawk–f ' [+\t$] ' {print $6,$7,$8,$9} ' data.txt press + or \ t or $ both to make delimiters and to print the specified columnC Nawk ' begin{fs= "[\t+$]"}{print $6,$8,$9} ' data.txt Press +,\t,$ (order doesn't matter) as a separator and print the specified columnD Nawk ' begin{fs= "[\t+$]";

-file records do not increment, each file starts from 1 \ T tab \ n line break FS begin when defining separators RSEnter the record delimiter, which defaults to a newline character (that is, the text is entered as one line)~ match, compared to = = not accurate comparison!~ mismatch, imprecise comparison = = equals, must all equal, exact comparison! = Not equal, exact comparison logic with | | A logical OR + match represents 1 or more/[0-9][0-9]+/or more than two or more digits/[0-9][0-9]*/one o

number, multi-file record increment FNR is similar to NR, but multi-file records do not increment, each file starts from 1 \ T tab \ n line break FS begin when defining separators RSEnter the record delimiter, which defaults to a newline character (that is, the text is entered as one line)~ match, compared to = = not accurate comparison!~ mismatch, imprecise comparison = = equals, must all equal, exact comparison! = Not equal, exact comparison logic with | | A logical OR + match represents 1 o

number, multi-file record increment FNR is similar to NR, but multi-file records do not increment, each file starts from 1 \ T tab \ n line break FS begin when defining separators RSEnter the record delimiter, which defaults to a newline character (that is, the text is entered as one line)~ match, compared to = = not accurate comparison!~ mismatch, imprecise comparison = = equals, must all equal, exact comparison! = Not equal, exact comparison logic with | | A logical OR + match represents 1 o

; Insert Path to DLL Directory IF Request. Form ("btnFileList") Set RegisterFiles = New clsRegisterRegisterFiles. EchoB ("Call RegisterFiles. init (frmFolderPath)RegisterFiles. EchoB (" "REG/UNREG" Chr (34) "> ")IF Request. Form ("btnREG") Call RegisterFiles. Register (frmFilePath, fr1_hod)End IFSet RegisterFiles = NothingEnd IF%>Class clsRegister Private m_oFS Public Property Let oFS (objOFS)M_oFS = objOFSEnd Property Public Property Get

...] awk [-F valu E] [-v var = value]-f program-file [files...] example: [plain] [alex @ alexon: ~] $ Awk '{print} 'persons.txt 1011, Alex Perkins, Product, Software Developer 3923, Jimmey Mills, Operation, COO 23934, Kevin Kim, Management, CEO 2321, Chris Paul, UI, for more information about Designer, see cat. more meaningful: [plain] [alex @ alexon: ~] $ Awk-F,-v OFS =: '{print $1, $2, $3, $4} 'persons.txt 1011: Alex Perkins: Product: Software Devel

number of records that have been read, is the line number, starting from 1, if there are multiple file words, this value is constantly accumulating. fnr The current record count, unlike NR, this value will be the individual file's own line number rs Enter the record delimiter, which defaults to line break ofs output field delimiter, default is also a space ors

to NR, but multi-file records do not increment, each file starts from 1 \ T tab \ n line break FS begin when defining separators RSEnter the record delimiter, which defaults to a newline character (that is, the text is entered as one line)~ match, compared to = = not accurate comparison!~ mismatch, imprecise comparison = = equals, must all equal, exact comparison! = Not equal, exact comparison logic with | | Logical OR + matches represent 1 or more/[0-9][0-9]+/two or more than 1 digits/[0-9][0

awk knows how to format the input, it can perform all the profiling work for us, and the rest of the script is simple. Let's look at a complete script that will parse the address list and print each record on one line, separating each field with a comma.Address.awk BEGIN {Fs= "n"Rs= ""}{Print $ "," $ "," $} Save script as Address.awk, address data stored in file Address.txt, you can execute this script by entering "Awk-f Address.awk address.txt". The output is as follows:Jimmy the weasel, plea