daily cryptoquote

=/root/rsyncUse Chroot=trueMax Connections=4Read Only=noList=trueUid=rootGid=rootAuth Users=testSecrets file=/etc/rsyncd.passwd36.rsync synchronization, how to delete the target data more than the data, that the source does not exist, but the target exists in the file or directory?# Rsync-av--delete/test1//test2/37. When using free to view memory usage, which value represents the amount of memory actually available?Second line: value for free38. One day you suddenly find that the company's websi

How to view a process run path under LinuxViewing processes under Linux Everyone would have thought of using Ps-ef|grep XXXBut see not the whole path, how to see the whole path?After each process starts, there is a path to the PID below the/procExample: Ps-ef|grep pythonDisplay: Oracle 4431 4366 0 18:56 pts/2 00:00:00 python server.py4431 is the process numberBy the/proc/4431, Ls-l will see:Total dosage 0-r--r--r--1 Oracle Oinstall 0 December 18:58 cmdlinelrwxrwxrwx 1 Oracle Oinstall 0 December

Daily management of the CentOS Linux system 3 16th sessionThe first half of the classThe second half of the classLinux system service ManagementNtsysvTool NTSYSV similar to the graphical interface management tool, if you do not have the command install Yum install-y ntsysvCommon services: Crond, iptables, Network, sshd, Syslog, Irqbalance, SendMail, Microcode_ctlNeed reboot to take effect after savingchkconfig (Command Line Service Administration to

://www.apelearn.com/bbs/forum.php?mod=viewthreadtid=7427highlight=curl 6. Several network-related commandsPING specifies the source IP Ping-i 116.211.95.148 58.53.94.11Telnet Www.lishiming.net 80Traceroute www.baidu.comDig @8.8.8.8 study.lishiming.net yum install bind-utilsNC arbitrary TCP and UDP connection and monitoringSS command Usage (similar to netstat) http://www.ttlsa.com/linux-command/ss-replace-netstat/Expand your Learning Profile:1. XINETD (the default machine does not install this se

Backup files:#Enter the name of the file to be copied (with suffix)Old_file_name = input ('Please enter the file name you want to copy:')#Open the file you want to copyF_read = open (Old_file_name,'R')#New file nameA = Old_file_name.rfind ('.')" "RFind () returns the last occurrence of a string (right-to-left query) and returns 1 if no match is found" "New_file_name= Old_file_name[0:a] +'[Copy parts]'+ Old_file_name[a:]#slices#Create a new fileF_write = open (New_file_name,'W')#read data, write

Issues with high CPU usageMaster some common commands jstack Jmap jps ps-ef et ceteraTop command View CPU usage PID as process numberExecutive Ps-ef | grep 18201 finds a specific processThe company picture can not be disclosed, in order to replace this machine any process, this command will appear two results, the second is just executed "Ps-ef | grep 18201 "produces aView all containers sudo docker ps-aEnter the container sudo docker exec-it container ID bashUse the top command againJstack Prin

All (iterable)Official documentation explains:Return True If all elements of the iterable be True (or if the iterable is empty). Equivalent to:1 def All (iterable): 2 for inch iterable: 3 if not element: 4 return False 5 return TrueDetailedReturns true if the element in Iterable is 0, ', False,all (iterable) returns FalseAttention:Null tuple, empty list return value is TrueInstance:1 Print(All ([1,2,3,4,5]))#True2 Print(All (['a',"','C', 3,4]))#False3 Print(All ([1,

overriding a parent class method:Overrides a method of the parent class in which a method with the same name as the parent class is created;Extend the parent class method, using super (). The parent class method call, which can also be accessed through the parent class name. Parent class method (), but not recommended. The concept of multiple inheritance and syntaxMultiple inheritance: Subclasses can have more than one parent class and have properties and methods for all the parent classes. M

directory.Use the import package name to import all the modules in a package at once The concept of a file, open, read, write, closeA computer file is a piece of data stored on a long-term storage device.Open opens the file and returns the file Action objectRead reads the contents of the file into memoryWrite writes the specified content to a fileClose File How files are opened Read file contents by lineUse the ReadLine method to read one line at a time, after the method executes, the fil

overriding a parent class method:Overrides a method of the parent class in which a method with the same name as the parent class is created;Extend the parent class method, using super (). The parent class method call, which can also be accessed through the parent class name. Parent class method (), but not recommended. The concept of multiple inheritance and syntaxMultiple inheritance: Subclasses can have more than one parent class and have properties and methods for all the parent classes. M

View IO Performanceiostat-d-x-k 1 10Whether the port is started/usr/sbin/lsof-i:8422/usr/sbin/tcpdump Icmp-n-I. eth0See if there is a large number of pingsView current number of connectionsNetstat-n |awk '/^tcp/{++s[$NF]} END {for (a in S) print A,s[a]} 'Restart Nginx with no interruption of serviceKill-hup ' Cat/usr/local/nginx/logs/nginx.pid 'View current number of connectionsNetstat-tan | grep "established" | grep ": 443" | Wc-lWhether there is an abnormal connectionNETSTAT-ANP |grep ' tcp\|u

meaning in the title description, 1outputs description output Description For each set of input data, the output line is the cost of a route from Galaxy 1 to the smallest cost of Galaxy N. If such a route does not exist, output ' no such path '.sample input to sample3 2 1 2 2-1 2 3 0 1 0 0Sample output Sample outputs2The description of the title is long and goes to the useless part.So, on this topic, I am the first time to write an array of analog linked list implementation, for SPFA does im

2:Meet the conditions 2 things to doElseOther What are the three types of logical operators? What are their characteristics?Logic or: or all false is false, one true is TrueLogic and: And All true is true, a false is FalseLogical non: Not true or false, true or false How to produce a random integerImport RandomRandom.randint (1,10) The three major processes of the programOrder: From top to bottom, sequentially from row to rowBranch: It is a different condition to determine the branch to b

://leetcode.com/problems/longest-substring-without-repeating-characters/, the main idea is to find a string of non-repetition of the eldest son string.This is relatively simple, the key point is to determine the repetition, from the next index of repeated characters continue to start, do not miss.The code is as follows:public class Solution3 {public static int lengthoflongestsubstring (String s) {int len = s.length (); if (len==0) {return 0; } string string = null; String su

box, this trick we have used in the fourth question. 2. Right-click on the Start menu, select "Properties", go to the Start Menu property settings interface, click the "Customize" button at the bottom, find "show run" in the list box below and check out, then click "Confirm" to exit, and then you can find the "run" command again from the bottom of the Start menu The above is about win7 in daily life often encounter some small problems , many times

KMP algorithmWhat is the KMP algorithm?Ask a question first: Given the string A and B, satisfy B must be a substring, ask first B and a overlapping b[1] corresponding to the ordinal of a.As an example: a:ababcedabced,b:abcedSo the answer is obviously 3, that is, a[3] starts the first time with B.So it's easy to think of the Brute Force algorithm O (n*m), right?Obviously easy tle ...Here we introduce a simple string matching algorithm: KMP.An example: A:ABABC,B:ABC;I=1,j=1, A[i]=b[j], continue, i

#!/usr/bin/python#--Coding:utf-8--(1). " In Python, a for-loop in followed by a sequence, each time the loop uses a sequence element instead of a sequence subscript "s = ' Saflasngsagleaoiga 'For I in range (0,len (s), 2):Print S[i](2). " Enumerate ():In each loop, you can get the subscript and the element at the same time, in fact, in each loop is returned is a table containing the value of each element, the two elements are assigned a value:Index,char ""for (Index,char) in enumerate (s):Print

How does Excel make the daily revenue and expenditure into multiple stacked stacks? Are you still worried about how to make the Excel multi-column stacked map, how to make your Excel multi-column stacking diagram and how to make you say goodbye to the trouble of how to make the stacked map of Excel. First, data processing 1, as shown in the picture, add a set of data columns, the data can be arbitrary. Second, the production

　　A. Skillfully change capital Chinese numerals 　　1. First we move the cursor to the cell in which you want to enter an uppercase number, and use the keypad to enter the corresponding number in the cell, such as: 12345. 2. Right-click the cell, select Format Cell ... 3. In the Pop-up Cell Format dialog box, select the Special option, and then in the type, select Chinese capital number. 4. After clicking "OK", Excel automatically converts the corresponding number into Chinese capit

Most database development teams master database objects through the database owner (dbo). The database developer connects to the development database, and the database has other users for the connection in addition to the dbo. Sometimes the developer creates a database object that is not named with the dbo beginning. The result: The database is in the hands of the user (account number) of the database, which the developer is using to connect to the database. To reduce this problem, help develo