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Make Lock Folder Without Software

Crontab is a program that can execute automatically when desired. The discussion this time is about how to create a crontab file. Syntax of crontab file contents itself are as follows: To create a crontab file on a user session active, you just open a terminal, then type:

crontab-e / / this to edit an existing crontab on the active session.

Then you edit the crontab file and type the syntax with the following format:

* * * * *

Explanation:-Signs asterix (*) above indicates when to run the program. Consisting of five stars, each of which means:

1. first Stars show minute program will be executed
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2. second star clock to show how the program will be executed
3. third star showing keberapa day program will be executed
4. fourth Star show week program will be executed
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5. fifth star indicates how many times a week program will run if we do not replace the asterix sign everything over to the star, it will automatically be run every minutes, hours, days, weeks and months following the execution Syntax want done. For example, an example crontab is as follows:
   * * * * * rm / home / tmp

So automatically, the program will execute the above command, which is to remove or delete files residing in the home directory / tmp After that save file by pressing ctrl X , then save, the program will be installed automatically by itself. To find out whether your crontab has a road or not, just type crontab-l , then you will see the crontab program is running. How, not make it easy? please try.