Linux

1. LoadRunner monitors Linux systems:(The rstatd service must be installed in Linux. If not, install the rstatd service in the following steps.) Service rstatd status 1) download the rstatd package (http://sourceforge.net/projects/rstatd ;) 2)

 Module_param () comprehension-------------------------------------------In user mode, you can pass command line parameters through main (), while compile a kernel module through module_param ()The module_param () macro is added in the Linux 2.6

How to mount a USB flash disk in Linux After inserting a USB flash drive, follow these steps: 1. fdisk-L/dev/SD *Fdisk-l lists the partition table information of a specified device. The USB disk is automatically named as SD * because it is

Fork function learning:   # Include # Include # Include # Include Main () { Pid_t PID; pid = fork (); If (PID Printf ("error in fork! "); Else if (pid = 0) Printf ("I am the child process, my process ID is % DN", getpid ()); Else Printf ("I am the

1. optimized the network device receiving queue Net. Core. netdev_max_backlog = 3000 This file indicates the maximum number of packets allowed to be sent to the queue when each network interface receives packets at a rate faster than the rate at

1. Linux dd read/write speed Time is used for timing. DD is used for copying, reading from if, and writing to. If =/dev/Zero does not produce Io, so it can be used to test the pure write speed. Similarly, of =/dev/null does not generate Io and can

Common Ubuntu commands Sudo apt-Get install software name install software command Sudo Nautilus open the file (with root permission) Switch su root to "root" Ls to list current directory files (excluding hidden files)Ls-A: List the current

In Linux, multi-threaded programming will certainly encounter situations where conditional variables are required. In this case, you must use the pthread_cond_wait () function. However, the execution process of this function is hard to understand.   

This is a vector-type semvector (Linux platform) that has thread security and blocking functions. You are welcome to use it. // Semvector. h # ifndef semvector_h _ # define semvector_h _ # include # include # include # include template class

  1. Process Information   1 PS [Root @ test/root] # ps-Aux Parameter description: A: select to list all programs. U: list all user programs X: list all tty programs Example: [Root @ test/root] # ps-Aux User PID % CPU % mem vsz RSS tty stat Start

The signal mechanism is a very old process communication method used by Unix. It is used to notify another process (or itself) of what happened to one process, what to do. 1. signal:Signals are a series of macros starting with SIG defined in signal.

Http://linux.chinaitlab.com/SHELL/791329.html   In the GUI, a routing tool can display network traffic. What should I do under the command line? Obviously there are some methods. For example, ifconfig will have such output:RX Bytes: 1224128649 (1.1

Linux Power Management Research Note-acpid Working Principle   Please indicate the source when reprint: http://blog.csdn.net/absurd/   In the design of handheld devices, power management has always been one of the important research topics.

Linux system information is stored in files, which are similar to common official files. Each file has its own name, content, storage address, and other management information, such as the user and size of the file. A file can be a letter, an

Static Method Note: All operations use the root user. Modify IP Address: Edit file/etc/sysconfig/network-scripts/ifcfg-eth0 Device = eth0 // device name, do not modify Bootproto = static // do not modify Broadcast = 10.10.22.255 // broadcast address,

Recently, I started to use Linux programming. In the past, I only had the C ++ programming basics for Windows, and I was very unfamiliar with Linux. Therefore, I learned everything from scratch. To do well, you must first sharpen your tools. The

1.View the file and folder size in LinuxDF, Du, and LS-lH commands; View the disk partition table tool fdisk-L; 2. Clean up system garbage in Linux Error Rm-F logfile Cause If the application has opened the file handle and directly deletes it, the

Author: Water Cut knife Reposted from: todaygood.cublog.cn In fact, it cannot be called transplantation. Just modify the General jflash code to suit your own board.Reference:The common JTAG cable structure is relatively simple. One end is db25,

Wait_on_buffer and wait_on_inode functions in the linux0.11 kernel are very representative delayed function processing processes. There are also many. One of the most important problems is why we need to break down before determining B _lock. This

Nmon monitors Linux Resources View Linux: CAT/etc/issue CAT/proc/version Uname- Download the corresponding nmon version based on the Linux Version Information Http://www.ibm.com/developerworks/wikis/display/Wikiptype/nmon Nmon for Linux Http://nmon.