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Inotify + unison implement bidirectional Real-time Data SynchronizationA new project was created a few days ago. The website architecture is that the front-end uses nginx to reverse proxy the two backend tomcat servers. At this time, the data

Shell script for automatic inspection of multiple servers Abstract: O & M services for more than 20 (or more) servers in a project, the performance inspection of servers is performed every day to check whether the CPU, memory, and disk space of the

1. Configure Repo1.1 Downloads Git-repo.git (b-side)Mkdir-p ~/gitcfgcd ~/gitcfggit Clone Https://gerrit.googlesource.com/git-repo git-repo.gitIf the above address cannot be connected, try the following address:git clone

#/bin/bash#功能: The QA service creates a zone profile based on the template and submits it to SVN.Source_path=/data/source_codeSVN_PATH=/CODE/PSM #svn发布目录, push to this directory first, and then update the commitDir=

1. Iterate over each line in the file while read line; Do Echo $line; Done file. txtOrCat file. txt | ( while read line; Do echo $line; done)OrCat file awk ' {print} '2. Iterate over a word for inch $line; Do Echo $word; Done3. WC statistics

Linux is available under the top, PS command to check the current CPU, mem usage. Here's a simple example:First, using PS to view the process of resource consumptionPs-auxWhen you view the process information, the third column is the CPU

one, while the special use of a : always cycle, never quitWhile:;d o...Done#!/bin/bash# showfile.shwhile:Read-p "Files path:" FILEPATH[$FILEPATH = = ' quit '] && breakIf [-e $FILEPATH];thenecho "$FILEPATH exists."Elseecho "No $FILEPATH."FiDoneecho

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++Until cycleWhile CONDITION; When the Docondition-turedone is true, enter the cyclic until CONDITION; Do loop body when done is false, enter the loop++++++++++++++++++++++++++++++++++++++++++++

Shell scripts become used in the process usually requires process control, in general, sequential execution, in the actual use of different situations need to execute different commands, then use the choice to execute such as if, case, sometimes

This article mainly introduces the use of the Truncate () method of manipulating files in Python, which is the basic knowledge of Python's introductory study, and needs friends to refer to the following The truncate () method truncates the size of

This article mainly introduces the use of the ReadLine () method in Python, which is the basic knowledge in Python's introductory study, and can be consulted by a friend. The ReadLine () method reads an entire line from the file. The trailing line

This article mainly introduces the use of the Seek () method of manipulating files in Python, which is the basic knowledge of Python's introductory study, and needs friends to refer to the The Seek () method sets the current position of the file at

This article describes the most commonly used tools for using shell to process text under Linux:Find, grep, Xargs, Sort, uniq, tr, cut, paste, WC, sed, awk;The examples and parameters provided are the most common and practical;The principle I use

wqfhenanxc@ubuntu:~$ Cat test.sh #!/bin/bash Lines=0 Cat $ | While Read line Do ((lines++)) Done echo "Number of lines read is: $Lines" Exit 0 wqfhenanxc@ubuntu:~$./test.sh Number of lines Read is:0 wqfhenanxc@ubuntu:~$ Cat

Iterating and traversing the lines, words, and characters in a file is a very common operation when you are working on a text file. Using a simple loop for iterations, plus a redirection from stdin or files, is the basic way to iterate through the

SQL Server ChapterTips in SQL ServerSQL Server hint (Hints) is the specified mandatory option or policy that is executed by the SQL Server query processor for SELECT, INSERT, UPDATE, or DELETE statements. The hint overrides any execution plan that

Content one: MySQL's transaction isolation level has the following four kinds:READ UNCOMMITTED (UNCOMMITTED)At this isolation level, all transactions can see the execution results of other uncommitted transactions. Reading uncommitted data is also

Text-to-left-aligned typography has text 4.txt as follows: 111111111111111111111 98912 Zhang Three222222222222222222 150020 Lee 44333333333333333333333 360000 Harry444444444444444444 2332 Zhao 66555555555555555555 222 Tianqi66666666666666666

The read command is a very important bash command for entering text from the keyboard or table and interacting with the user, which can read the values of multiple variables at once, and the variables and input values need to be separated by spaces.

Reference: Http://imysql.cn/2008_07_10_innodb_tx_isolation_and_lock_modeThis article is only for " SELECT ... LOCK in SHARE MODE"and"select ... for UPDATE "in transaction lock and RR isolation level testing, for the table structure, index