Shell Basic Applications

Experiment (I.)

Experimental purpose: Detect system once per minute "The root partition has less than 10G of free space to send warning messages to all terminals. "

Experimental requirements: Write a script and automate the script.

Experimental Analysis:

1. First extract the information from your system/partition and extract the free space of the root partition based on your/partition information.

2. Send a warning message to all terminals.

3. Writing a scheduled task .

Experimental steps:

1. Write a script, create a folder under/below the shell, and write a check_disk.sh script under the shell folder.

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M02/75/49/wKiom1Y0ef-RrYYxAACKDQpXuVU127.jpg "title=" Qq20151031162108.png "alt=" Wkiom1y0ef-rryyxaackdqpxuvu127.jpg "/>

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M01/75/46/wKioL1Y0fLTQBpk1AAEdXBOYxcc026.jpg "title=" Qq20151031163145.png "alt=" Wkiol1y0fltqbpk1aaedxboyxcc026.jpg "/>

2. Execute permissions for scripts

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/75/49/wKiom1Y0eyvjqHL4AADpn_2NMss973.jpg "title=" Qq20151031162607.png "alt=" Wkiom1y0eyvjqhl4aadpn_2nmss973.jpg "/>

3. Writing a scheduled task

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M01/75/49/wKiom1Y0fELAXYaTAADo4-9ZSfY962.jpg "title=" Qq20151031163039.png "alt=" Wkiom1y0felaxyataado4-9zsfy962.jpg "/>

4. Experimental testing

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M01/75/49/wKiom1Y0fWaAgw5LAAEVppQMOcA325.jpg "title=" Qq20151031163529.png "alt=" Wkiom1y0fwaagw5laaevppqmoca325.jpg "/>

Experiment (II)

Experimental purpose: 23:30 per day for a full backup of the BBSDB library in the MySQL database.

Experimental requirements: Automatic backup via script to TIME

Experimental Analysis:

1. Use mysqldump to make a backup of the database.

2. Add variables to the backup command to make the script more complete and flexible.

3. Write the Scheduled tasks.

Experimental steps:

1. Create a Database Bbsdb library

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/75/49/wKiom1Y0g22R2fQ4AAFqqtUTixY529.jpg "title=" Qq20151031164945.png "alt=" Wkiom1y0g22r2fq4aafqqtutixy529.jpg "/>

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M01/75/47/wKioL1Y0g7Cgrz7VAAFy5r_JOjY987.jpg "title=" Qq20151031165002.png "alt=" Wkiol1y0g7cgrz7vaafy5r_jojy987.jpg "/>

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/75/49/wKiom1Y0g4PyaBDFAAMWUAQPnrQ588.jpg "title=" Qq20151031170118.png "alt=" Wkiom1y0g4pyabdfaamwuaqpnrq588.jpg "/>

2. Scripting backup Bbsdb A full backup in the library

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M01/75/47/wKioL1Y0ilPCddEDAABItvStJs8222.jpg "title=" Qq20151031172952.png "alt=" Wkiol1y0ilpcddedaabitvstjs8222.jpg "/>

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M02/75/4B/wKiom1Y0mgLwziSIAAGPAP9qKVo178.jpg "title=" Qq20151031183736.png "alt=" Wkiom1y0mglwzisiaagpap9qkvo178.jpg "/>

3. Add execute permissions to the script

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M02/75/47/wKioL1Y0ipHAJHupAADZgzGC01g121.jpg "title=" Qq20151031173054.png "alt=" Wkiol1y0iphajhupaadzgzgc01g121.jpg "/>

4. Writing a scheduled task

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/75/47/wKioL1Y0iyXzeZrMAADpSE6_53U375.jpg "title=" Qq20151031173319.png "alt=" Wkiol1y0iyxzezrmaadpse6_53u375.jpg "/>

5. Test to see if the backup file has been generated and view the message.

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/75/4A/wKiom1Y0i-uDbq2HAAD3N-Fbi1I455.jpg "title=" Qq20151031173735.png "alt=" Wkiom1y0i-udbq2haad3n-fbi1i455.jpg "/>

6. Delete the tables in the database with the backed up files for recovery.

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M02/75/49/wKioL1Y0m2-S_-N8AAEmQjGtHiM972.jpg "title=" Qq20151031184111.png "alt=" Wkiol1y0m2-s_-n8aaemqjgthim972.jpg "/>

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/75/4B/wKiom1Y0m0ODfGhyAAEu4t_g3Io341.jpg "title=" Qq20151031184249.png "alt=" Wkiom1y0m0odfghyaaeu4t_g3io341.jpg "/>

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/75/49/wKioL1Y0m4Tiv1mVAAFssrVxtt4670.jpg "title=" Qq20151031184223.png "alt=" Wkiol1y0m4tiv1mvaafssrvxtt4670.jpg "/>

Summary: script files can be automatically executed in a system-scheduled task by scripting, which is a good way for operations personnel.

This article is from the "Down to earth" blog, make sure to keep this source http://343614597.blog.51cto.com/7056394/1708393

Shell Basic Applications