Crontab
- Crontab is a special file with formatting that is recognized by the cron process to execute step by step.
- For example:
0 */12 * * * cp -R /home/cmnatic/Documents /var/backups/
* is the wildcard character and we can use this if we do not wish to provide value.- Use the below for cron job expressions.
crotab -e to edit crontab file with configured text editor.
Package Management
- When a new package is developed it will be submitted to the
apt directory.
- After approval the package will be deployed to the users.
- In linux, the files in
/etc/apt act as a gateway / registry.
add-apt-repository - To add a new repository.- A package can also be installed using package installers such as
dpkg.
- Integrity of the downloaded file can be checked with
GPG (Gnu Privacy Guard) keys.
Logs Management
- Linux maintains
rotating logs of the running application or service.
- Logs can be found in
/var/log.