task scheduler delete files

Compile a crontab scheduler task in the CentOS Environment During host management, we often do some things every day. To avoid manual operations every time, we can write scheduled tasks to automatically execute the host periodically according to the schedule. Install and startUnder CentOS: Yum install vixie-cronYum install crontabsThe former is usually installed on the latter.Start the service. Service cron

There are 2 scripts that run daily on the mission planDTS_RSYNC.SH is responsible for downloading the SQL files that are backed up onlineDTS_INPUT.SH is responsible for importing the downloaded backup files to the local MySQLNow, the problem is that the time to complete the download of the backup file is not fixed. It was 6 o'clock in the evening and it is now 7 points before it can be completed and may be

Task Scheduler Main program: ATD production environment is not commonly used Anacron production environment is not commonly used Crond commonly used, mainly introduce this program Crond Service (daemon name Crond, always running):Command:Crontab parametersCommon Parameters Introduction:-e Edit User Task schedule-L View user's current

There are two points to perform on Linux on a task schedule :1. The command to execute a task plan at one time in the future has at , batch 2, the periodic implementation of a task plan has crontabThe message body needs to be accepted interactivelybelow is a description of the commands for the Linux Task SchedulerAt c

HH:MM[AM:PM] [Month] [Date] hh:m M[AM:PM] +number [Minutes|hours|days|weeks] ATQ: Query at Task atrm Delete task 3.cron task Crontab [-u username] [-l|-e|-r] -U: Use ROOT to help other users create/delete crontab work schedules-

.jpg "alt=" Wkiol1xtr4timbkwaabyksjkg_4975.jpg "/>650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M01/72/CE/wKioL1XtsIfizG_hAACqASYLomY233.jpg "title=" 36020150907233333311.jpg "alt=" Wkiol1xtsifizg_haacqasylomy233.jpg "/>crontab command:crontab [-u user] [-l|-r |-e]-U User: Manages the crond of the target user, only root has permission, the default management of their own.-l:list, List tasks-r:remove, remove All Tasks-e:edit, editor650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M

system uses target to manage the unit for ease of management.A few commands about target:systemctl list-unit-files --type=target //查看所有targetsystemctl list-dependencies multi-usrt.target //查看指定target下面有哪些unitsystemctl get-default //查看系统默认的targetsystemctl set-default multi-user.target //设置默认targetRelationship between service, unit, and Target: 1. A service belongs to one type of unit2, multiple unit composed of a target31 target contains

Task Schedule:1, at some point in the future to perform a task at a time;At specified time executionBatch idle time executionAt timeAt>commandAt>ctrl+dSpecify time:Absolute time: hh:mm, DD. Mm. YY Mm/dd/yyRelative Time: now+#Units: Minutes,hours, days, weeksBlur Time: Noon, midnight, teatimeExecution result of the command: sent to the user who scheduled the task

Task planning in our daily work development, there is great use, sometimes the project needs a large number of data updates inserted into the database, so we can save resources, we need to calculate the timing period automatically, for this, we need the PHP task to implement, Then we will introduce to you today PHP implementation of Windows Task

Appcmd Restore backup command to restore the IIS configuration: appcmd Restore Backup BackupName$iispath=$iisfolder+"\"New-alias-name Appcmd-value$env: windir\system32\inetsrv\appcmd.exeappcmd Add backupxcopy/s/y C:\Windows\System32\inetsrv\backup$iispath#Export a task schedule, use the Schtasks/create command to import a task plan$Schedule= new-object-com"Schedule.service"$Schedule. Connect ()$Schedules=$

Save File 18 When a user creates a new file or modifies a file, they canClick "Save File Button". The software pop-up Save Address dialog box allows users toSelect the Save address for the file. 05 Automatically save files 30 The user creates a new file or modifies a file, without pressing saveThe file button will leave the current interface. The software Pop-up warning dialog box tells yo

Task Scheduler Related programs:Perform a task at a time in the future: at, Batch Perform a task periodically: Crontab \ \ Operations Execution Results view: Mail Maile-mail Service: Default execution result write:/var/spool/mail/username Smtp:simple Mail Transmission protocol /var/spool/mail/username Pop3:post Office

UnitService System ServicesTarget multiple units consisting of groupsDevice hardware devicesMount File System mount pointAutoMount Automatic mount pointPath file or pathSCOP is not an external process initiated by SYSTEMDSlice Process GroupSnapshot Systemd SnapshotSocket inter-process communication socketsSwap fileTimer TimerUnit-related instructionsSystemctl List-units lists the running unitSystemctl list-units--all list all, including failed or inactiveSystemctl list-units--all--state=inactiv

/somefile: Reads the job to be run from the specified file;-L: View a list of such running jobs in the job queue; equivalent to using the ATQ command;C At_job_num: Look at the contents of the running job;-D: Delete the specified job; equivalent to ATRMService Script Name:/ETC/INIT.D/ATDsyntax format: at {hours: minutes} {year-month-day}ATQ: User queries the currently set at Task ListATRM:

Minute Minutes, the value range is (0-59) Hour Hours, the value range is (0-23) Day_of_month Date, value range is (0-31) Month month, the value range is (1-12), you can also use jan,feb,mar,apr ... Said Day_of_week Week, the value range is (0-6), of which Sunday is 0 or 7, can also be expressed in Sun,mon,tue,wed,thu,fri,sat Command The command to execute Sp

Task Schedule:Perform a task at a time in the future: at, BatchTo perform a task periodically: crontabe-Mail Service:Smtp:simple Mail Transmission protocol/var/spool/mail/usernamePop3:post Office ProtocolImap4:internet Mail Access ProtocolMua:mail commandMail command:Mail: Enter the interactive email interface;Mail-s ' SUBJECT ' [email protected]Mail-s ' SUBJECT

/bin/systemctl Stop sshd0 * */5 * */usr/bin/rm-rf/var/ftp/pub/ *30 7 * * 6/USR/BIN/SYTEMCTL Restart HTTPD30 * * 1,3,5/usr/bin/tar JCVF HTTPDCONF.TAR.BZ2/ETC/HTTPDNote: When setting a task that is not performed every minute, the Minutes field should also fill in a specific time value instead of the default "*", otherwise the scheduled task will be executed every minute.Confirm the contents of the root user's

, day, week(3) Blur timeMidnightNoonTeatimeCommon options:-Q queue:at Job queue;-f/path/from/somefile: Reads the job to be run from the specified file;-L: View a list of such running jobs in the job queue; equivalent to using the ATQ command;-C At_job_num: Look at the contents of the running job;-D: Delete the specified job; equivalent to ATRMBatchThe system chooses to run the specified task when the resour

Planning tasks for Linux systemsLinux system Operations Engineers most of the management work is done by automatically executing a script on a regular basis.Cron function is very important, remember!!!Planning function Crontab: -U: (user) indicates that a user is specified and no-U is the current user -E: Indicates that a scheduled task is specified -L: (list) indicates a scheduled task is

] PRESERVE][COMMENT ' COMMENT '][ENABLE | DISABLE][Do sql_statement]1) Temporary Shutdown eventALTER EVENT e_test DISABLE;2) Turn on eventALTER EVENT e_test ENABLE;3) Change the daily empty test table to 5 days to clear:ALTER EVENT E_testOn SCHEDULE every 5 day;Delete events (drop event)The syntax is simple, as follows:DROP EVENT [IF EXISTS] Event_NameFor example, delete the previously created E_test eventD