Linux

Introduction Pidstat is mainly used to monitor system resources occupied by all or specified processes, such as CPU, memory, device Io, task switching, and threads. When pidstat is run for the first time, statistics from the start of the system

Introduction In Linux, I/O statistical tools such as iostat and nmon can only count the read/write status of the per device. If you want to know how each process uses I/O, it is more troublesome. Iotop is a top tool used to monitor disk I/O

One winscp Home: http://winscp.net/eng/index.php Winscp is a free software for super cattle. It is an SFTP, FTP, and SCP client on windows. It is used to share and exchange files with Unix or Linux. Winscp is an open-source SFTP client using SSH in

Reference: RedHat Linux configure RSH and rcp: http://linux.chinaunix.net/techdoc/net/2008/06/30/1014112.shtml 1: preparations before installation: machine A: 192.168.0.104 (machine_a) (install RSH server) machine B: 192.168.0.106 (machine_ B) (rsh

One uptime   The uptime command is used to view how long the server has been running and how many users have logged on to it, so as to quickly learn the server load. The uptime output contains the load average, which shows the load of the last

Author: Technology Achievement dream Link: http://ixdba.blog.51cto.com/2895551/566802   I. Cluster DefinitionA cluster is a set of collaborative services to provide a more stable, efficient, and scalable service platform than a single service.

When using the ps command, there is a column in the Process status, for example [David P @ Supernova: ~] $ PS u  User PID % CPU % mem vsz RSS tty stat Start Time Command David P 3995 0.0 0.4 3324 1956 pts/2SSAug17 0: 00/bin/bash David P 25049

From: http://www.linuxidc.com/Linux/2008-04/12493p3.htm     The built-in firewall mechanism of Linux is implemented through the netfilter module in the kernel (www. netfilter. ORT ). Linux Kernel uses netfilter to filter incoming and outgoing

  Linux Network Configuration: 1) permanently modify the local machine name:/etc/sysconfig/Network 2) permanently modify the External Machine name:/etc/hosts Linux network configuration check: 1) MTR is quite useful. You can not only see

After reading the book "Linux/Unix design ideas", I think most of the content in the book is too far away. The following is a simple summary of the core of the book, helping you save time and money.   Linux/Unix design ideas:   1)ProgramIt

(1) overview. This article briefly describes the basic process of breakpad: 1)ProgramAfter compilation, first use a tool to dump the debug information of the program in advance (to symbol file ). The dump mainly involves the correspondence

Author: Sheryl calish Quick tutorial for beginners who are new to Linux file commands Although GUI desktops (such as KDE and gnome) can help users utilize Linux features without having to know about the functions of command line

Taking redhat9.0 and i386 as examples, this article analyzes the Linux Startup Process from user power on to command line prompt on the screen. It also introduces various files involved in startup. Read LinuxSource codeIs undoubtedly the best

  Perforce Linux Installation   1. Pre-installation Configuration 1) machine configuration Modify machine name Apply for ing between the static IP address and the dns ip address to the machine name.   2) User Configuration Create a

Linux displays the hardware information of the system, which is not as intuitive as windows. Here I list the practical commands for viewing the system information, classify them, and explain the examples. CPU The lscpu command displays CPU

From: http://www.blogjava.net/lihao336/archive/2010/06/29/324822.html   Cruisecontrol configuration instructions Cruisecontrol is a continuous integration tool. Continuous integration is a good agile practice. Build a cruisecontrol

The kill command is used to terminate a specified process. It is a common command for process management in Unix/Linux. In general, when we need to terminate a process or some processes, we first use tools such as PS/pidof/pstree/top to obtain the

  If you want to start Program To continue running, use nohup. However, if you want to activate SSH the next day, you can check the status of the program running yesterday and continue working. nohup will not work at this time and you need to use

Introduction Sed is an online editor that processes a row of content at a time. During processing, the currently processed rows are stored in the temporary buffer, called the pattern space. Then, the sed command is used to process the content in the

I usually don't use much or it is actually a bit vague. I am very grateful to the interviewer for his explanation. Here is a record:  What does File Permission 4755 mean? What is the meaning of s/S in File Permission? Chmod is a command for setting