Linux

In Linux systems, there are times when multiple processes work together to accomplish a task, between processes or between threads that sometimes need to pass information, and sometimes to coordinate with each other, interprocess communication

Mmc_alloc_host () Application Platform SD unit corresponding to the MMC_HOST structure->Init_delayed_work (&host->detect, Mmc_rescan) creates a corresponding SDIO device insert for this platform SD unitDetection kernel work_queue task column

reproduced from: http://www.cnblogs.com/gaojun/archive/2013/10/24/3385885.html first, view and manage the currently logged-on user 1. Use the W command to view the process information that the logged-in user is using,the W command to display the

the rp_filter of Linux kernel parameters introduction of Rp_filter parametersThe Rp_filter parameter is used to control whether the system turns on the checksum of the packet source address. First look at the description in the Linux kernel

Linux Device driver inductive summary (eight): 3. The layering and object-oriented thought of equipment management Xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx The previous section describes the

This article describes how to save console print content to a file under Linux. 1. Tee command The tee command is used to redirect data to a file and, on the other hand, can provide a copy of the redirected data as a stdin for subsequent commands.

Recently encountered on the project to compress some pictures on windows, picture file names are Chinese, SCP to Linux with unzip after the file name All is garbled, find a half-day solution, the following test feasible, special record, and you

Reprint of the Wind flying articles, there is time to seriously study. Linux Dynamic Connection principle GOT PLT Table detailedAttention:The following connectors are used to refer to the LD,and the loader refers to the ld-linux.so;1, got table;Each

The easiest way to send a Linux email Recently want to monitor the system through the Linux situation and automatic alarm, the general Linux to send the alarm mail through the local mailbox or external mailbox server, here with the simplest way to

Linux high Availability (HA) cluster keepalived detailed 2013-08-22 16:18:34 tags: Linux HA high available cluster keepalived Detailed original works, allow reprint, reprint, please be sure to hyperlink form to indicate the original source of the

Input-output redirection is supported in Linux environments, represented by symbols .0, 1, and 2 represent standard input, standard output, and standard error information output, which can be used to specify standard inputs or outputs that require

This article detailed Linux commonly used commands and the use of methods, welcome to the collection, convenient for future use. 1. #表示权限用户 (such as: root), $ for ordinary users Boot prompt: Login: Enter user name Password: Enter password user is

1, Linux standard input and output The traditional Linux standard input and output devices are mainly keyboards and monitors, which are described in detail in the following table. linux standard input Output device

introduction of FreeType FreeType Library is a completely free (open source), high-quality and portable font engine, it provides a unified interface to access a variety of font format files, it is very convenient for us to develop font display

Reproduced in this article from: http://www.linuxdiyf.com/viewarticle.php?id=66575 when writing a shell script, sometimes we need to get the name of the current directory, the PWD command can return the full path of the current directory, Instead of

The following is a list of Linux system calls that contain most common system calls and functions derived from system calls. This is probably the only list of Linux system calls you can see on the Internet, even if it's a simple alphabetical list,

Problem background: A long time useless notebook, suddenly brought back to use when the SECURECRT unable to connect to the virtual machine Linux problem, has also encountered this problem, basically this problem is caused by the following: 1.

Linux compiles the HELLO.C program, uses GCC hello.c, and then./a.out can run; a number of complex processes are hidden behind this simple command, and this process includes the following stepsThe macro definition expands, and all #define at this

When we develop, we often count some access logs, and the URLs in the access log are massive, and many of them are duplicate content. Take the URL, for example, to count the URLs with the first 5 frequency occurrences in the URL, sorted by the

Author: huaqing visionary lecturer The first kind of samba sharing 1, install Samba: You can first check whether it has been installed: RPM-QA | grep samba, without the words installed under it, here is an online installation mode based on RPM