an existing software needs to be installed. During the installation process, it has been reported that a nss-util dependency package cannot be downloaded, and the installation process is terminated. I tried to change the source and it didn t work, so I ...
mainly means that you do not want to add port access items when you have multiple domain names nginx.conf : how should I configure it? thank you ...
it was fine before rebooting, but after rebooting, it will never be able to start again root@iZuf6acp86oa3jizjzwaqdZ:~-sharp service mysql start Job for mysql.service failed because the control process exited with error code. See "systemctl status...
how to centralize the error_log of multiple servers after the server cluster? ...
.travis.yml language: node_js node_js: - 8.9.1 branchs: only: - master cache: apt: true directories: - node_modules install: - git pull - rm -f package-lock.json && npm install script: - npm run build before_install: - openssl ae...
use rmtrash instead of rm, to do alias rm= bin rmtrash.sh in bashrc found that when a personal account uses rm, the files will be moved to the ~ .rmtrash folder, and the root account will also be moved to ~ .rmtrash under the root directory. but...
it s OK to use my own computer, but not a Linux host on the same LAN, and there s no problem with the online environment. the error is as follows: RequestCoreException: cURL resource: Resource id-sharp9; cURL error: Could not resolve: rans-7900.oss-c...
how to enter a question such as a title description? ...
epoll has two working modes, horizontal trigger and edge trigger. The manual says that when the edge is triggered, the file descriptor must be non-blocking, which I can understand. But why can horizontal triggers handle blocking io? in horizontal trig...
for example, the files in the csv directory below lf-orders-2018-11-20 (1700) .csv lf-orders-2018-11-20 17002.csv file names contain spaces and are interspersed with parentheses in both Chinese and English. You need to replace them with an underscor...
there are more than 10 identical stations data www aa.com test.php data www bb.com test.php data www cc.com test.php I want to use the Linux command to batch modify data www aa.com test.php a certain line of the specified file $article MOD...
recently deployed web pages with docker, but I encountered a problem as follows: when normal deployment, that is, no docker is used, the configuration of the configuration file under nginx s site-enabled is as follows server { charset utf-8; ...
what we used to do is to add multi-thread locking. In fact, we only need to add a synchronized, but how can we ensure that only one process is writing if there are several different java programs? is it okay to use a file lock? FileChannel fc = fi.g...
Let s ask my questions in the form of judgment questions. if a process creates a thread, the thread runs normally indefinitely (assuming so). Suddenly the process exits due to an exception, and the thread disappears and does not exist in the syste...
< H2 > when you encounter problems in the past, you can always find absolutely correct answers on the Internet, but now there are many different answers on blogs. For example, about java nio, some people say that it is Synchronize non-blocking, and some p...
in learning Linux c programming, I encountered the open function int open (const char * pathname, int flag,.) open function to perform different operations depending on whether the third parameter is passed. now I want to write a function int va_fun (...
about the number of logical CPU kernels, there is a formula number of logical CPU = number of physical cpu x number of cores per physical cpu x 2 (if hyperthreading is supported and enabled) that is, if hyperthreading is turned on, the number of log...
how to delete files such as .py files based on the suffix of file names in linux for example, now I just want to delete the data at the end of py ...
I thought of two ways: PHP code is converted directly to JS code PHP engine for front-end browsers is it possible to achieve these two methods, and what is the difficulty? ...
accidentally rm * forgot to add the previous point, resulting in no file file directory, dual system, I can open the disk under kali (debian) on window, but I can t go to the system, is there any way to restore it? ask urgently, do not want to re...
the function jionOrder in Alipay Mini Program tools tools.js is used to add order elements to the passed array and assign values. However, calling this method on the page page returns a value of undfined ....
list An is like this B when I return from B details, the default height is 0 . router.afterEach((to, from, next) => { window.scrollTo(0,0); document.title = to.name; }); all pages click in with a height of 0, but when this page retur...
JavaScript Advanced programming (3rd Edition) P144 the meaning expressed in (2). It s not what I understand. -reference elevation content start- English explanation To create a new instance of Person, use the new operator. Calling a constructor i...
if ( $nickname != ) { $where .= " and CONCAT(a.nickname,a.mobile, a.card_number) like %" . $nickname . "% "; } and $where .= "and (a.nickname like %{$nickname}% or a.mobile like %{$nickname}% or a.card_number ...
I use the django project under svn to run in a virtual environment, but pycharm is still dependent on the system, which makes it impossible to use modules such as django-redis,numpy as shown in figure setting:: other self-created projects do ...