linux grep recursive

grep should be a search tool that all Linux developers use every day, with its easy-to-use, powerful win large majority of people's favorite, skilled use of grep can greatly improve the efficiency of the tool, the following summarizes my work in the use of some skills.First, basic usagegrep [Options] PATTERN [FILE ...]The common options are several:-A search in t

| Sort | Uniq-c 1 reboot- root 1 wtmpUNIQ This command is used to delete duplicate rows only show one, for example, you want to know the user who landed your console this month, and do not care about his number of landing, then use the above example, (1) All the data is listed first, (2) The name of the person separately, (3) sorted; (4) Show only one! Because this command is to reduce the duplication of things, of course, you need to "match the sorted files" to deal with it!

" Introduction "grep: A powerful text-search tool that uses regular expressions to search for text and print matching lines"Grep common usage"[[email protected] ~]# grep [-ACINV] [--color=auto] ' search string ' filenameOptions and Parameters:-A: binary files are searched for data in the form of a text file-C: Calculates the number of ' search string ' found-I: I

size of a mesage queue +KERNEL.MSGMNB =65536 - the# Controls The maximum size of a message,inchbytes *Kernel.msgmax =65536 $ Panax Notoginseng# Controls The maximum shared segment size,inchbytes -Kernel.shmmax =68719476736 the +# Controls The maximum number of shared memory segments,inchpages AKernel.shmall =4294967296 the[Email protected] zkero]#grep-V'^$'/etc/SYSC +sysconfig/sysctl.conf -[email protected] zkero]#

grep, which finds the meaning of a string, is to match a qualifying string in a file.1. Command format:...2. Common options:"Grep-c"Statistics Match to' String 'The number of rows for the content. (c is the meaning of count)"Grep-i"ignores case differences. (I for the meaning of ignore)"Grep-l"Print out matches to' Str

consumed, and whether there are large files. 3. data processing  3.1 Search Data grep The PS command is described in the previous section when viewing the process with the grep command mentioned. The following shows the MySQL error log file to find information that contains warning keywords. Use the GREP-C parameter to display the number of match

Linux under grep displays multiple lines of information The grep under standard Unix/linux controls the context through the following parameters Grep-c 5 Foo file displays the line in the file matching the Foo string and the top and bottom 5 lines

grep lookup contains specific characters in the specified directory Instance Search all files in the/var/www/html directory, with files containing phpinfo characters, and show travel numbers Grep-rn phpinfo/var/www/html/* Note:-R is recursive meaning-N to display line numbers grep searches for a specific file in a

Linux diary: Cut grep sort WC uniq After several days, I finally had time to write a Linux blog. Recently I felt a lot of emotion, but I was unable to give up my love for Linux. So I continued my research and didn't want to delay my step forward due to chores, I am literature and art.Cut command. The basic usage of cu

path name9 find the number between 1-255 in the ifconfig command resultIfconfig | Egrep "\10 Challenge: Write a pattern to match a reasonable IP address11 Challenge: Write a pattern to match all email addressesBecause the specific e-mail address rules are unknown, so the following is written by themselves, feel goodEgrep--color=auto "^[[:alnum:]]+ (_?[ [: Alnum:]] +) {0,}@ ([[: Alnum:]]+\.) {0,} [[: alnum:]]+$] Matchmail.regexpThis article is from the "Ops Dog" blog, make sure to keep this sour

This technique comes from my actual development:Inet_addr This function is used to turn the IP address into a network byte order, his prototype: in_addr_t inet_addr (const char *CP);The return value is a in_addr_t type, it is clear that this is not a C language standard data type, want to figure out what he is exactly what type, certainly to find the header file, on the Linux system, the header file is generally placed under/usr/include, but this very

Linux Command grep, linuxgrep Execution permission: All Users Location:/bin/grep Syntax: grep [options] pattern [file...] Function: Search for string-matched rows in the file and Output Option: invE -N: Output row number Grep-n "csdn" regex.txt matches the line contai

find the line matching the specified string from the file contents: $grep "the string being searched for"The file name looks for the line that matches the regular expression from the contents of the files: $grep–e "Regular expression" file name lookup when case-insensitive: $grep–i"the string being searched for"file name lookup matches the number of lines: $

Friendly tip: Linux command operations are case-sensitive!Grep's Full English name: Global search REgular expression and Print out of the line.The text content search tool searches the target file on a row-by-line basis based on user-specified text patterns (regular expression metacharacters and normal characters) to display rows that can be matched.Introduction to How to use:grep [OPTIONS] PATTERN [FILE ...]Example:

今天我们来讲下Linux中的重定向、管道和grep命令。由于重定向和管道知识点比较少，但是又比较重要所以和grep命令一起讲。在将重定向我们先讲下系统的标准输入和输出。在Linux中标准输入（STDIN0）对应设备：键盘；标准输出（STDOUT1）和标准错误输出（STDERR2）对应设备：显示器。重定向就是将标准输入输出重新定位到指定位置或者设备中（比如：文件）。I/O重定向set–C禁止对已存在的文件进行覆盖重定向强制覆盖>|set+C关闭上述功能输出重定向：>：输出重定向，会进行覆盖操作（原数据会被覆盖）>>：追加输出重定向，不进行覆盖会进行追加输出2>：错误输出重定向2>>：错误追加输出重定向>：重定向标准输出或者错误输出至一

Regular expressions I wrote the blog for the first time. The basic use of regular expressions has just been learned recently. Organized, and later used to review the search. The basic description of regular expressions:Basically, a regular expression is a pattern used to describe a certain amount of text, and the shorthand for regular expressions is the Regex full name regular Express.The first regular expression is very important for Linux OPS engine

In Linux, the RM + grep command deletes all files except the specified file. Previous/next article 10:17:38/personal classification: liunx (185)/comment (0)/score (0/0) this afternoon, I was asked how to delete all the files in a directory except the desired files. I thought about whether grep and RM work properly. After reading the information, we came up with a

YOUARERINGT4. The end of this is with the. End so does not match to4 YOUARERINGT4 is matched here, ending with the number 4 that appears earlier5,he is 2tom2 here, which ends with the number 2 that appears earlier5,he is 2tom2. The end of this is with the. End so does not match to6 Tom is Cat4,yes is 4. The end of this is with the. End so does not match to7 eg is over 11. The end of this is with the. End so does not match to7 eg is over 11 matches here, is ending with the number 1 that appears

http://mtnt2008.iteye.com/blog/710452 Add color to the grep command under Linux Java code grep--color "test" Test.json grep--color "Test" Test.json Automatically color grep Java code vim ~/.BASHRC alias grep= '

character that matches the pattern \3... He loves his lover. He likes his lover. She likes ker liker. She loves her liker ~] #grep "\ (L.. e). *\1 "Lovers.txtBack reference: The character that references the pattern of the preceding grouping brackets to:Example:1. Displays the lines in the/etc/passwd file that do not end with/bin/bash:~] #grep-V "Bin/bash"/etc/passwd2. Find the two-digit or three-digit num