now the company has a need to get rid of Ubuntu s desktop system and make it simple, leaving only some basic services. There are two ways of thinking: one is to subtract from an off-the-shelf Ubuntu system to remove some off-the-shelf services, and the ...
weak to ask you prawns, 1. Is the kernel compiled after downloading from the kernel website preemptive or non-preemptive? 2. If it is preemptive, how to compile non-preemptive? If it is non-preemptive, how to compile it? 3. By patching? Where can I do...
on Android 4.4, the child process is created by the parent process. According to the process id, the child process manually kill the parent process, but the child process is still running and is not killed. As a result, the child process is not re-create...
in the code on page 253 of the second edition of Unix Network programming Volume II: interprocess Communication (Chinese version), the author stores the semaphore in a shared memory through mmap, and then the parent and child processes can directly manip...
the case is that there is a device: on server A oai0 Link encap:AMPR NET ROM HWaddr inet addr:10.0.1.1 Bcast:10.0.1.255 Mask:255.255.255.0 UP BROADCAST RUNNING NOARP MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 ov...
1. Recently, I encountered a strange thing when I configured adsl dialing on linux. When adding vlan to linux, the VLAN Dev name of vlan normally ends with [network card .xx]. As a result, mine ends with [renamexx], which is directly above the figure. ...
the code is as follows: -sharpinclude <linux init.h> -sharpinclude <linux module.h> -sharpinclude <asm pgalloc.h> -sharpinclude <asm pgtable.h> -sharpinclude <linux thread_info.h> -sharpinclude <linux slab.h> -sharpi...
for work reasons, I used the strace command to track the whole process of curl and wget requests, and the conclusion about DNS domain name resolution is as follows. Some of them do not understand, and the source code does not understand (operation and m...
1. Development environment Qualcomm 9377wifi chip kernel-4.1.15 android6.0 question: the kernel reported an error when connecting to AP for the first time: R0: wlan: [584csrSendJoinReqMsg: E: SME] csrSendJoinReqMsg: 14463: Connecting to ssid:Public_5...
in the 32-bit case, the Linux kernel virtual address starts from 0xc0000000, and 3GB+896MB belongs to kernel space. 896MB to 4GB is high-end memory, not to mention. The information I found on the Internet shows that kernel image starts from 3GB+16MB. Si...
is currently completing a simple kernel module coding job that simulates the rootkit hidden process. According to the observation of strace ps , the ps program traverses the directory through open proc opening fd, and getdents < fd > . The functi...
when cross-compiling radiotap, there is no `le32toh definition: https: github.com radiotap r. take a look, in the header file endian.h defined, and then can not find out where the header file endian.h, kernel include does not contain is defi...
ubuntu-12.04, uses usb network card rtl8192eu, installed linux driver installed hostapd, and configured hostapd.conf wifi to connect normally in sta mode. but use hostapd to do wifi hotspots, and convert them to AP, prompts that nl80211 is missing ...
problem description I have a back-end service that takes time to start, and it takes about 5 minutes from process startup to normal access. The slow_start parameter of the nginx reverse proxy can be buffered for a period of time after the back-end ser...
Today, I was watching the official tutorial of flask. In the first part, I encountered a problem in creating an application. He created a function of create_app in _ _ init__.py, and then wrote some configuration information. I didn t see him call it. ...
xml file related configuration and error prompt Cannot resolve symbol classpath:. : properties: the runtime environment is dependent on tomcat7, data validation: <dependency> <groupId>javax.validation< groupId> ...
I am very happy to come to Sifei website for the first time. Today, I encountered a small problem when I was learning mongodb to configure the master-slave server, that is, when I set the ip and port of the master-slave server, logging in to the master ...
:index.htmlabout.htmlcss*.cssbackground:url() question: the above is the development file before I packaged. How can I set it in webpack (what loader is used and how to configure it) so that webpack can change the path of reference to. images *.pn...