-n exp1.sh 1 errtrap () 2 {3 echo "[line:$1] Error:command or function exited with status $?" 4} 5 foo () 6 {7 return 1; 8} 9 trap ' Errtrap $LINENO ' ERR ten ABC one fooThe output results are as follows:$ sh exp1.shexp1.sh:line 10:abc:command not found[line:10] Error:command or function exited with status 127[line:11] E Rror:command or function exited with statu
, it is transferred to the state of halting * * transitiontohaltingstate* Returns the state machine would transfer to an internal haltingstate* and invoke * Machine'll cause haltedprocessmessage
Stop the StateMachine method, quit * * * Call This place explicitly illustrates the exit method that invokes the current state and its parent class, with two questions: 1. Whether the parent class refers to its immediate parent class or iterates over the call 2. This place directly illustrates t
-active sth.service Query service is runningSystemctl status Sth.service query service run statusSystemctl--failed--tyoe=service Query starts a failed serviceSystemctl list-units--type=service Lists all the unit that has been loaded and activated (running),--type specifies the category of the unit,--all lists all the unit, including inactive (non-active)Systemctl list-unit-files--type=service Lists all unit boot-up settings (equivalent to previous chkconfig--list)Systemctl list-dependencies [
/man5/redis.conf.5.gz
/var/lib/redis # redis
/var/log/redis # redis log file
/var/run/redis # redis process PID file
4.redis Start-Stop and Status View
[root@bogon ~]# systemctl status redis.service # View the status of redis, you can see that it is active
● redis.service - Redis persistent key-value database
Loaded: loaded (/usr/lib/systemd/system/redis.service; disabled; vendor preset: disabled)
Drop-In: /etc/systemd/system/redis.service.d
└─limit.conf
Active: active (running) since Thu 201
CentOS7 installation Docker not start, in the work encountered this problem, at that time not clear, online information is not much, but after their own tinkering finally solved
This problem!
[root@test ~]# yum Update [root@test ~]# yum install docker] [root@test ~]# service Docker s Tart redirecting to/bin/systemctl start Docker.service Job for Docker.service failed because the control process exited With error code.
"Systemctl status Docker.
+ + extension function, the Gil will be locked until the end of the function (since no Python bytecode is run during this time, so no thread switching is possible). Programmers who write extensions can actively unlock the Gil. (2) Exit threadWhen a thread ends the calculation, it exits. A thread can invoke an exit function such as thread.exit (), or it can use the standard method of the Python exit process, such as sys.exit () or throw a Systemexit exception. However, a thread cannot be "killed
Service network restart failed.
Cause of error: Job for Network.service failed because-control process exited with error code. "Systemctl status Network.service" and "Journalctl-xe" for details.
Check: Systemctl status Network.service
Output:
[Root@localhost network-scripts]# systemctl status Network.serviceNetwork.service-lsb:bring Up/down NetworkingLoaded:loaded (/etc/rc.d/init.d/network; bad; vendor preset:disabled)Active:failed (Result:exit-code)
invalid.Symptoms:1. Nginx running normally, MySQL running normally. Static HTML files can be accessed normally. Stating that Nginx service is not a problem2. Only PHP pages are not open. Error 502 Bad Getway, indicating that there is a problem between Nginx and PHP-FPM.3. Nginx's 80 port, PHP-FPM 9000 ports are running. The PHP page still doesn't respond.4. Restarting the PHP-FPM process is still a problem. Finally reboot the server to recover, the problem is more serious.View the core time log
If the user does not click on the "Exit" link of the website and directly closes the browser (or forcibly closes the browser process, crashes, etc.), the server cannot process the user's request to exit the site, as follows:
Mode 1: add hidden iframe in each page, refresh the IFRAME periodically in the way of asynchronous refresh, such as every 10S refresh once, when the server has not received the user's refresh request in a certain time, the user is considered to have
/xiangmu/zentao/Zentaopms[Root@www ~]# ls/xiangmu/zentao/zentaopms/--After the decompression is complete, you can see that this directory contains more of these filesBin Config DB Doc framework lib module tmp VERSION www[Root@www ~]# chown-r nginx/xiangmu/zentao/-r--Here Remember to change this directory and the next face directory to nginx users, otherwise the Web page installation will fail
Configure Nginx
[Root@www ~]# vim/etc/nginx/conf.d/zentao.conf
server {Listen 80;server_name Ztwww.yanji
the Exit command to exit the container.
You can then use the following command to view the running container:
# docker PS
At this point, you should not see any programs that are running, because the container that you just exited with the Exit command is in a stopped state, and you can view all the containers by using the following command:
# docker ps-a
CONTAINER ID IMAGE COMMAND CREATED STATUS
02bebc3f546a 83ee "/bi N/bash "Minutes ago
[Email protected] ~ for"systemctl status mysqld.service"" Journalctl-xe " for details.Use Systemctl status to view the status:[[Email protected] ~]# systemctl status MySQL mysqld.service-Lsb:start and Stop MySQL loaded:loaded (/etc/rc.d/init.d/mysqld; Vendor preset:disabled) Active:failed (Result:exit-code) since Sun2018- to- . Ten: .: -CST; 26min ago Docs:Mans: Systemd-sysv-generator (8) Process:29770Execstart=/etc/rc.d/init.d/mysqld Start (code=exited
1. Daemon Thread The Java threading mechanism is divided into two types, the user thread and the daemon thread (Daemon thread). User threads: Runs in the foreground, performing specific tasks. For example: The main thread of the program, the child thread that connects the network. Daemon Thread: Running in the background, serving other threads. Example: Garbage collector thread Thread similarities and differences: Once all the user threads are running, the daemon exits with the JVM, which is act
broadcast sender with the corresponding permission can be received by this broadcastreceiver;Android:process the process where the broadcastreceiver runs. The default is the app's process. You can specify a separate process (Android four basic components can specify their own independent process through this property)Common forms of registration are:receiverAndroid:name=". Mybroadcastreceiver " > Intent-filter> ActionAndroid:name= "Android.net.conn.CONNECTIVITY_CHANGE" /> Intent-fi
that of the rejected connection. This parameter can also be set slightly beyond the hardware conditions.
This parameter limits the settings of MinSpareServers and MaxSpareServers.
.
MaxRequestsPerChild 30
A sub-process is a commonly used method for providing Web services. A sub-process is a connection service, the problem is that each connection requires system operations to generate and exit sub-processes, so that these additional processes occupy a large amount of processing capabilities
Article Title: LINUX Process Control (2 ). Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
3. Process Control and Termination
3.1. Process Control
After a process creates a child process, if the child process exits first, the system will not automatically clean up the environment of the child process, but the parent process must call the wait or waitpid funct
From: http://hi.baidu.com/wlzqi/blog/item/208cebc4b1c02dab8326ac79.html
The wait function is prototype: # Include/* define the pid_t type */# IncludePid_t wait (int * Status) Once a process calls wait, it immediately blocks itself. Wait automatically analyzes whether a sub-process of the current process has exited. If it finds such a sub-process that has become a zombie,Wait will collect information about this sub-process and destroy it completel
/cvsroot* ***** CVS exited normally with code 0 *****All operations performed on CVS after "CVS exited normally with code 0" is not in the 0 state are all error operations.(5) Use of wincvs:1. Upload (checkin ):
Upload a directory:In the middle of the form, there is an upload e page on the left. Click it and select the folder you want to upload. Click creat-> import module from selection in the menu bar and
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