grep sed awk

'and' to prevent shell interpretation. The standard format of this Program Statement segment is: 'Pattern{ action }' The pattern parameter can be any of the regular expressions of egrep. It can be made up of the syntax/RE/and some style matching techniques. Similar to SED, you can also use "," to separate the two formulas to select a certain range. For details about the matching, refer to the appendix. If you still don't understand it, find a Unix bo

'} '/etc/passwd//list user name with ID number greater than 500　awk Syntax rulesif (an expression)ActionElseActionAn if (expression) action; Else actionEg:Interpretation SDA4 capacity is less than 20MB alarm, otherwise display OKdf-h | grep "SDA4" | awk ' {if ($4while (condition)ActionSyntax format:X=1while (iPrint $i}egawk ' I=1 {} BEGIN {while (iDoActionwhile

Sed and AWK getting started. Sed and AWK are text processing artifacts in * nix command lines, which are quite powerful. they are all row-oriented, or they process text in one row after another, read the content from the standard input or file, execute the script command in one row, and then print...

Sed and awk are * powerful text processing artifacts in Nix command lines. they are all row-oriented, or they process text in one row and one row. They read content from standard input or files and execute script commands in one row, then print the output to the standard output until the end of the file (EOF ). Sed Sed

Sed and AWK getting started. Sed and AWK are text processing artifacts in * nix command lines, which are quite powerful. they are all row-oriented, or they process text in one row and one row. They read content from standard input or files and execute script commands in one row, then print the output to the standard ou

-----------------------------Overview----------------------------------- The Linux Text Processing tool (the following are commands and tools, and only as a display, not as a modification action) grep (filtering, but does not support regular expressions)Egrep (regular expression support)Sed (row filter)awk (column filtering) - the conce

Sed tool Introduction After learning about some basic applications of formal notation, what about it? Haha ~ You can play with two things, that is, sed and awk! These two guys are quite useful! For example, the logfile. Sh written by laruence analyzes the small programs in the login file, and uses and counts most of the analysis keywords. These two baby eggs are

grep or Egrep or awk filters two or more keywords | using grep to match "and" or "or" mode 2011-06-23 14:06 grep or Egrep or awk filters two or more keywords:Grep-e ' 123|abc ' filename/find the line containing 123 or ABC in the file (filename)Egrep ' 123|abc ' f

Sed awk tools and some common shell scripts (1) sed Sed is a streamlined and non-interactive stream editor. It enters the edit command in the command line and specifies the file name, and then displays the output on the screen. The file content read row by row is stored in the temporary buffer, which is called the pat

maintained under '/dev/disk' # See man pages fstab (5), findfs (8), mount (8) and/or blkid (8) for more info # tmpfs/dev/shm tmpfs ults 0 0 devpts/dev/pts devptsgid = 5, mode = 6200 0 sysfs/syssysfs defaults 0 0 0 proc/procprocdefaults 0 0 ③ Echo a path to sed and retrieve its directory name Through sed; for example, echo "/etc/sysconfig/" | sed, return/etcecho

] ruby] # sed-n '/ruby/p ' ab | Sed ' s/ruby//g ' #删除rubyInsert[[email protected] ruby] # sed-i ' $a bye ' ab #在文件ab中最后一行直接输入 "Bye"[email protected] ruby]# Cat ABHello!Ruby is me,welcome to my blog.EndByeDelete a matching rowSed-i '/Match string/d ' filename (note: If the match string is a variable, you need "" instead of ". Remember as if it were)Replace a strin

rm $filename F Idone(4) View native IP address#!/bin/bashifconfig | grep "inet Address:" | awk ' {print $} ' | Sed ' s/address: '//g(5) IP address legality judgment#!/bin/bashcheckipaddr () { #IP地址需由三个. Delimited and all digital echo $ | grep ^[0-9]\{1,3\}\.\ ([0-9]\{1,3\}\.\) \{2\}[0-9]\{ 1,3\}$

, default is space key[[email protected] ~]# cat 1a2a3a4a5ab2b3b4b5bc2c3c4c5c[[email protected] ~]# cat 1|awk ' {print $ \ t line: "NR" \ t the row total field: " NF} ' a line: 1 The total field of the row: 5b row: 2 The total field of the row: 5c row: 3 The Total field of the row: 5 Check the row of data that is less than 10 passwd the third column, and list only the account number and the third column. Cat/etc/passwd|

) Capitalize the first lowercase letter of each word[[Email protected] sed]# sed ' s/\b[a-z]/\u/g ' test.txt3.sed the last number in a row of a file[email protected] sed]# cat Test.txtErtFff**[ABCFD]123324444[Rty]**Fgfgf[[Email protected] sed]#

Tags: awkHttp://www.cnblogs.com/ginvip/p/6352157.htmlThis is a blog I found, the content of awk is written very well, need to seeawk about! No.(1) Take odd lines[[email protected] shell]# SEQ 10 | awk ' I=!i '13579(2) Take even lines[[email protected] shell]# SEQ 10 | awk '! (i=!i) '246810(3) SEQ 10 not after 4 lines[[email protected] shell]# SEQ 10 | Head-n-4123

/wyfs02/m02/73/49/wkiom1x5isgbnd98aacvjrggyge101.jpg "/>8.R command:the R command is a read command. SED uses this command to add the contents of a text file to a specific location in the current file. 650) this.width=650; "style=" Float:none; "title=" 27.png "alt=" wkiom1x5isgiiyizaafqdelvwzc614.jpg "src="/HTTP/ S3.51cto.com/wyfs02/m02/73/49/wkiom1x5isgiiyizaafqdelvwzc614.jpg "/>Some special commands for 9.sed