sed command in unix

1. View logs for a certain period of time#cat Hdfs-audit.log | Sed-n '/2018-04-11 10:00:00/,/2018-04-11 10:01:00/p ' | More---Direct use time period#cat Hdfs-audit.log | Sed-n '/2018-04-11 09:[0-9][0-9]/,/2018-04-11 10:[0-9]:[0-9]/p ' | More---Use regular expressions#sed查看log时间段 (sed-n '/start/,/end/P ' p is printed ou

First, what is SED?The Linux sed command uses script to process text files.SED can process and edit text files according to script instructions.SED is mainly used to automatically edit one or more files, to simplify the repeated operation of the file, to write the conversion program and so on.Ii. Basic grammar of the SEDSED basic usage:Sed: stream editor, row edi

command: sed [options] Flow Editor, change file additions and deletions, three Musketeers dickParameters:-N: Cancel default outputP: (print) printinge.g. sed-n ' 20,30 ' P ett.log print ett.log 20-30 lines of contente.g. sed-n ' $ ' p ett.log print the last line in Ett.log, $ is the end of the fileCommand: awk [options

To speak and be sensitive to the line--"The Analects of Confucius and Leezen" The SED command is a text-processing tool that is used to process an input stream. Mastering it can better help manage Linux and process log files. Usage: sed [option] ' command ' input stream Common option: -N: Quiet mode, generally if you d

Very powerful text manipulation tool, Sed,awk,grep This three command is the operation of the text fileThe UNIX system has several very special features:1. For the kernel, UNIX files are byte sequences. IO devices are also files.2. The meaning of the document is referred to the application for interpretation. The text

SubstitutionI ignore character casing@@@ ## # #通用Delete the first two linesSed ' 1,2d '/tmp/text.txtDelete First row and last rowSed ' 1,$-1d '/tmp/text.txtDelete one to last rowSed ' 1, $d '/tmp/text.txtDelete first three rowsSed ' 1,+2d '/tmp/text.txtDelete the specified line[[Email protected] ~]# sed ' 2d '/tmp/text.txtThere's 8 in the delete row.[[Email protected] ~]# sed '/8/d '/tmp/text.txt----------

Sed Stream Editor Stream editorsThree large text processing tools: Grep,sed,awkSyntax: sed ' addresscommand ' file ...Address:1,startline,endline1,1002,/regexp//^root/3,/pattern1/,/pattern2/Mode 1 to mode 2 in the middle of the row4,linenumber the specified row5,$ last line6,startline,+n n rows after starting from the StartLine lineCommand:D: Delete rows that mat

[Email protected] ~]#sed[-NEFR] [Action] Options and parameters:-N: Use Quiet (silent) mode. In generalsedUsage, all data from STDIN is generally listed on the terminal. But if you add-n parameter, only the line (or action) that is specially processed by SED is listed. -e: Directly in command-line modesedthe action editor;-F: Direct thesedis written in a file, th

5: Delete the # number at the beginning of a file. (eg: #abc)Lesson 6: Delete the # and trailing whitespace characters at the beginning of a file, but require a white-space character after #. (# ABC)Lesson 7: Delete a file with white space followed by white space characters and # at the beginning of the line in the # class. (#abc)Lesson 8: Take out the parent directory name of a file path650) this.width=650; "src=" Http://s2.51cto.com/wyfs02/M00/7D/09/wKiom1beyj3RJRltAABji4x57o0502.gif "style="

process file line processing for a row of sed loopssed-n '/abc/p ' file will print the contents of the mode space by defaultline matches the ABC print out-R supports extended delimiters- N does not let the default print mode spacesed [email protected] sed ' s/abc/def ' file after remote login to modify the contents of filesed-n ' 5p ' file prints the fifth linesed-n ' $p ' file prints the last linesed-n ' 1

Use the sed command to simulate the original tac data www.2cto. comShell code catdataThisistheheaderline. thisisthefirstdataline. thisistheseconddataline. thisisthelastline. shell code... use the sed command to simulate the original tac data www.2cto.com Shell code cat data This is the header line. this is the first da

Sed is a very powerful file processing tool, mainly in the behavior of the processing units, you can replace the data rows, delete, add, select and other specific workFormat: sed [option] [command] [file]Common commands:A: NewC: ReplaceD: DeleteI: InsertP: PrintS: replaceOptions:-I: Directly modify the contents of the read file instead of the screen output.-N: Us

Sed-i '/CD ${ldir_dest}\/webextend\/pc ln-s \/hard\/www_winclient\/bboxpc.exe./a\ \TCD ${LDIR_DEST}\/ WEBEXTEND\/PC ln-s \/hard\/www_winclient\/' $i '. '#参考别人后自己改的, it's mostly a variable.Sed-i ' 4i dfsdfdsad ' xxx.txt #Insert contents between the fourth and fifth line is inserted in the 4th row, the original fourth row ran to V#参考下边, some of the top.Sed-i ' 4c Dfsdfdsad ' xxx.txt #Insert contents in the Lines 4 and overwrite the old on line 4th ins

Http://www.cnblogs.com/ggjucheng/archive/2013/01/13/2856901.htmlSed is an online editor that processes a single line of content at a time. When processing, the currently processed rows are stored in a temporary buffer called pattern space, followed by the SED command to process the contents of the buffer, and after processing is done, the contents of the buffer are sent to the screen. Then the next line is

Linux shell sed awk command (2)-awkawk syntax Format:awk [Options]-F program-file [--] file ...Options:-F FS,--field-separator FSCreate a delimiter with FS as the input line (the default delimiter is a space or tab)-V Var=val,--assign var=valBefore executing the procedure, set a var value of Val-F program-file,--file Program-fileRead the awk instruction from the script file to replace the input processing s

Tags: sedSED is used in conjunction with the Find commandPurpose: The/root/kang directory, all files with *.sh end, and the contents Oldboy string, replaced by Kang[[emailprotected] kang]# find /root/kang/ -type f -name "*.sh"|xargs /root/kang/nginx/abc.sh /root/kang/test.sh #查出总共有两个文件[[emailprotected] kang]# find /root/kang/ -type f -name "*.sh"|xargs cat #查看文件内容oldboyoldboy[[emailprotected] kang]# find /root/kang/ -type f -name "*.sh"|xargs sed