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#!/usr/bin/env python#Kiss Python#*/10 * * * */usr/bin/python/root/checkslave.pyImport MySQLdbImport timeImport Paramikoips = [' 127.0.0.1 ']mailcontact = ' [email protected] 'mobilecontact = ' 18701669895 'Checklog=open (' Slave.log ', ' a

I. SQLAlchemy-linked table operation1. One-to-manyClass group (Base): # One-to-many tables, which may contain multiple users __tablename__ = ' group ' nid = Column (Integer, Primary_key=true, Autoincrement=true) caption = column (String ())

File descriptors are less used in bash, starting with 0 users representing the flow of data, 0 for standard input, 1 for standard output, 2 for callout error output, and others starting from 3. The most common scenario is to output an error message

ParamikoThis module is based on SSH for connecting to remote servers and performing related operationsSshclientUsed to connect to a remote server and execute basic commands ImportParamiko#To create an SSH objectSSH =Paramiko. Sshclient ()#allow

Using Python to invoke External system commands can improve coding efficiency. When the External System command is called, it can be further processed by getting the command to execute the return result code and execute the output. This article

Stringio Classes in IO modules from IO import Stringio In memory, open a text-mode buffer that can manipulate it like a file object When the Close method is called, the buffer is freed Stringio OperationGetValue () to get the

Paramiko is a python-based SSH2 remote secure connection that supports authentication and key methods. Can implement remote command execution, file transfer, intermediate SSH proxy and other functions.Installation:Pip install Paramiko or

1. Three ways to implement file sharing 1. What is file sharing:     (1) file sharing is the same file (the same file refers to the same inode, the same pathname) by a plurality of independent read-write (almost understood as multiple file

Shell Features--Linux has a variety of shells to use, the default for Bash,bash has the following key features.1. Command Memory AbilityPress the up and down keys on the command line to find a pre/Post input command. These commands are recorded in ～/

Using pool class multi-process to realize batch host management1 #!/usr/bin/python2 #-*-coding:utf-8-*-3 #author:liulixin4 #time:2017-03-025 #Description:achieve the multiple Processes (high Concurrent) to execute single or multiple commands

First, socketIn general, the socket has an alias called a socket.Sockets originate from UNIX and can be manipulated using "open open–> read-write write/read–> close" mode. Socket is an implementation of this pattern, the socket is a special kind of

Linux is a file-based system, and all hardware, such as software, will have a corresponding file representation under the directory. For Dev This directory, we know the file below it, which represents the Linux device. In Windows systems, devices

Shell Features--Linux has a variety of shell can be used, the default for Bash,bash has the following key features.1. Command Memory AbilityPress the up and down keys on the command line to find a pre/Post input command, which is recorded in ~/.bash_

system calls and device drivers (system calls are calls to device drivers)To provide a consistent interface to the user, the device driver encapsulates all hardware-related features.Open: Opening a file or deviceREAD: Reading data from an open ask

1. What is bash?Bash is a Unix shell written for the GNU program and is the default shell used by many Linux platforms.The shell is a command interpreter, an insulating layer between the operating system kernel and the user. At the same time, the

1. Introduction to Kernel ModulesThe overall structure of the Linux kernel is very large, it contains a lot of components, how to use the required components?Method One: All the components are compiled into the kernel file, namely: Zimage or bzimage,

C language file input/output ACM Improved (Freopen function)May 27, 2009 10:379,457 views post Comments Read comments Article Jiangnan (Slyar) Article Source: Slyar Home (www.slyar.com) reprinted please specify, thank you for your

OK, ready, first blog open ~Android training, Java training, look forward to communicating with you!First listen to the other types of passion, grandpa, starting from here:A System classThe System class represents a class of systems, and the

This script is to monitor whether the host is alive in a network segment, whether Port 22 is on, and whether the SSH login can be successfully logged through a unified user name and password, and the host IP that could be logged in is logged to the

Linux0.11 Start ModeBIOS bootWhen the PC power is turned on, the CPU of the 80X86 structure will automatically enter the real mode and automatically execute the program from 0XFFFF0.This is usually the address in Rom-bios. The BIOS of the PC will