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Cannot request resources under https when centos6.x uses wget or curl?
two servers in the same Ali cloud environment A:
[root@AY140220152843902sdg46ZsG ~]-sharp openssl version -a
OpenSSL 1.0.1e-fips 11 Feb 2013
built on: Wed Mar 22 21:43:28 UTC 2017
although the version is very long, according to built on, there is an ...
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Does std::vector < std::string > require manual memory release?
in practice, we encountered the use of vector < string > as a local variable to temporarily store a large number of string, and found that a large amount of memory was not released after running. After taking a look at the related problems, it is general...
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Linux script command, its own execution has a log, in the cron expression execution does not have a log, how to solve?
linux script command. The shell script itself has log output, but there is no log in the cron expression. What is the reason and how to solve it?
shell script command: nohup tcps modules hadoop hadoop-2.6.2 bin hadoop jar tcps modules hadoop jar ca...
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The mysql root account seems to be messed up.
two questions, when logging in, typing mysql-u root-p correctly jumps to the password line, but you can t type the password on the keyboard. You can t log in with a password, but you can log in directly by typing mysql. Is this the wrong place? I have...
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The problem of multi-thread variable self-increment in C language
the description is not clear. Please look at the code and the result directly. Thank you.
void * product (void * arg) {
int rear = 0 ;
while(1) {
rear = (rear + 1)%5;
printf("p:%d n",rear);
Sleep(500);
} }
int main (void...
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Linux uses xinput-- list-- short to discover that pointer displays two mouse devices with the same name?
how can I change the speed of the mouse?
[root@localhost ~]-sharp xinput list
Virtual core pointer id=2 [master pointer (3)]
Virtual core XTEST pointer id=4 [slave pointer (2)]
Logitech USB Keyb...
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As shown in the figure, after the router connects to the outside wifi through the wds bridge, why is it still unable to access the Internet?
now the company uniformly uses wireless Internet access (a wireless network card is plugged into the desktop), but there is a cabin where there is no wireless signal. I have a wireless router (tp-link) on hand. Because of the problem of sharing the prin...
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Failed to install mysql for centos7. The server has just been initialized. The installation tutorial is available on the official website.
in fact, there is nothing wrong with my installation, the only problem is that it is different from the example given in the official documents, which makes me think I am wrong. trying to go down is not a big problem. excuse me.
the server is the Al...
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Crontab runs every 3 hours
crontab runs every 3 hours
3 sh home test.sh
in this case, I saved it at 8 o clock, so will it run at 9 o clock? what time is it every 3 hours?
...
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When are DMA and interrupts in IO mode used respectively?
When are DMA and interrupts in RT,IO mode used respectively? ...
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MinGW compiles cgminer source code
after running the autogen.sh script, the error log is as follows:
libtoolize: copying file `m4 ltversion.m4
libtoolize: copying file `m4 lt~obsolete.m4
configure.ac:96: error: possibly undefined macro: AC_DEFINE
If this token and others are ...
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Failure to open after ubuntu16.4 installation of 32-bit chrome, is complete
is it because the operation is wrong, or is it because Google stops supporting 32-bit chrome? my actions:
download 32-bit deb file address: https: google-chrome.en.upto.
sudo dpkg-I deb filename
sudo apt-get install-f
Open chrome afte...
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How to install pdo? in VPS of centos
recently I tried to move the finished website (thinkph5 framework) to a remote server, but found that VPS s PDO was not installed:
PHP5.65.3:
...
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Composer vcs update problem
every time composer up appears this and updates it for a long time
No problem if you update locally, update will appear on top of the linux service
composer has also been updated and has not been resolved
...
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Some misunderstandings about sigsuspend in APUE books
the code is as follows:
< H1 > include "apue.h " < H1 >
static void sig_int (int);
int main (void) {
sigset_t newmask, oldmask;
pr_mask("program start: ");
if (signal(SIGINT, sig_int) == SIG_ERR)
err_sys("signal(SIGINT) ...
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How does C judge the tcp socket is closed? on the other end?
< H1 > current solution < H1 >
server
bool is_server_disconnected(int client_socket)
{
set_flag(client_socket, O_NONBLOCK);
char buffer[10];
int length = recv(client_socket, buffer, 10, 0);
clr_flag(client_socket, O_NONBLOCK)...
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There is a problem with centos7's cloud service using git clone.
the execution process is as follows
git clone https: github.com jquery jqu.Cloning into jquery . fatal: unable to access https: github.com jquery jqu. : Peer reports incompatible or unsupported protocol version.
I don t know what went ...
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The crontab command was not executed on time.
yesterday crontab was configured to close the samba service regularly, but the service was not turned on in the morning and there was no log, so I would like to know what the problem is:
root@VM-0-9-ubuntu: var log-sharp crontab -l
* 1 * * * * usr...
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How to reduce the complexity of variable information displayed by gdb?
I recently upgraded gdb from 7.12 to 8: 00, and debug found that when I display a string, the content displayed is very complicated! For example, startSym= "A "; such a simple string, disp startSym appears as follows:
>>> disp startSym
$2 = {...
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Ring buffer usage & whether the operation has BUG?
1. Use ring buffers to exchange data, threadWrite-> buf-> threadRead threadWrite {
memcpy(buf[pushCount & mask], value, size);
pushCountPP;
...
}
threadRead {
...
}
if mask = = 2, pushCount accumulates from 0 when pushCount = 0 pushCount & ma...
