1. Connect to the FTP serverFormat: ftp [hostname | IP-address]A) on the Linux Command Line, enter FTP 10.18.34.115.B) The server will ask you for your username and password, and enter the yint and password respectively. You can wait for the
Signal Generation, signal processing, other signal functions, one instance
1. Signal Generation
The signals in Linux are similar to those in DOS Int or windows. A trusted signal is sent to the corresponding process when a signal occurs. There are
Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--># NVIDIA-settings: x configuration file generated by NVIDIA-settings
# NVIDIA-settings: Version 1.0 (buildmeister @ builder63) wed Oct 1 15:10:25 PDT 20
Common Linux commands
Common command formats in Linux:
command [option] [argument1] [argument2] ...Where option starts with "-", multiple options can be connected with one "-", for example, "ls-l-A" and "ls-La" have
I. Basic Knowledge: threads and processes
As defined in textbooks, processes are the smallest unit of resource management, and threads are the smallest unit of program execution. In the operating system design, the main purpose of evolution from a
The POSIX thread library encapsulates a thread processing interface based on processor, operating system, and other features. For Linux systems based on the x86 processor architecture, it usually schedules a newly created thread to a core different
1. Linux link conceptLinux links are classified into two types: hard link and symbolic link ). By default, the ln command generates a hard link.
[Hard connection]HardConnection refers to the connection through the index node. In a Linux File System,
Many people know that Linux is more secure than Microsoft Windows. But why? Is this argument true? But few people can answer this question.
To clarify this problem, we must first make it clear that"
Security
. In fact, most people make the same
Preface
When a company's servers are deployed on the Internet, a jump server is set up. to access other servers of the company, an SSH jump from the jump server is required (the firewall rules will be configured accordingly). As mentioned above,
When creating a file, the system saves all information about the file, including:
• File location.
• File type.
• File length.
• Which User owns the file and which user can access the file.
• I node.
• File modification time.
• File Permission bit.
Chapter 4: synchronizing servers with rysnc and SSH
1. rsync. This book describes ha and load balance. This chapter mainly describes how to synchronize files and content on the two servers. The content on the two servers must be exactly the same
Run the following command to View Details:PS-Aux | sort-K4, 4n
PS auxw -- Sort = RSS
PS auxw -- Sort = % CPU
PS commands in Linux
% CPU usage of CPU Processes% Mem process memory usageThe size of the virtual memory used by the vsz ProcessThe size
SVN add values/strings. xml // -- add
SVN st // -- view the status
Svn ci // -- submit SVN ci-M "svn ci, permission"
1,Run the file checkout to the local directory.
SVN checkout
PATH (path is the directory on the server)
For example: SVN checkout
For bonding network load balancing, we often use it on the file server. For example, we use three NICs as one to solve the problem of an IP address, heavy traffic, and heavy network pressure on the server. For file servers, such as NFS or Samba file
Linux epoll introduction and program example
1. Where is epoll sacred?
Epoll is currently a hot candidate for developing large-scale concurrent network programs in Linux. epoll is officially introduced in the linux2.6 kernel, similar to select, in
In Linux, some commands can greatly improve the efficiency. This article will introduce the find and grep commands. The two of them can be a must-have Linux Command and I will use them almost every day. The structure of this article is as follows:
Embedded Linux OS learning plan
The arm + LINUX route focuses on the embedded Linux operating system and its application software development goals:(1) master the structure and principle of mainstream embedded microprocessor (initially set as ARM9)
Linux is based on modules, and all drivers are modular: Management Module commands: 1. List the sizes and names of all loaded modules in the system: lsmod or CAT/proc/modules
Ty @ tonylinux :~ $
Shared memory is one of the simplest methods for inter-process communication. The shared memory allows two or more processes to access the same memory, just as the malloc () function returns a pointer to the same physical memory area to different
Q: How do I manually add a default gateway in Linux? Http://www.21t.org.cnA: Take the root user as an example and run the following command:# Route add default gw xxx. XXX (IP address of the gateway)To change the gateway, edit
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