Clear systemd journal
Journalctl is a utility for querying and displaying logs from journald, systemd’s logging service. Journal logs can take considerable amount of disk space. Here are some useful steps to free up space on ubuntu and…
Category: Ubuntu
Ubuntu – count all files in folder
find . -type f | wc -l
Ubuntu – Delete all files with the same extension in the subfolders
In this example all the files with the extension gz inside the /var/log/ directory and in all its sub-folders will be deleted. find /var/log/ -name “*.gz” -type f -delete
Ubuntu – Sort folders by size
Launch this console command du –max-depth=1 /* | sort -n
Delete apache log files older than x days on Ubuntu
Assuming that the apache logs are under the /var/log/apache2 folder and you only want to delete .gz files older than 2 days: find /var/log/apache2/*.gz -mtime +2 -exec rm {} \;
Execute .go file using crontab in Ubuntu
The first thing to do is to compile the .go file to make it executable: go build myfile.go This will produce a file called myfile that is executable. After that run the command from the…
Kill process by port number in ubuntu
Assuming that the process we want to close is running on port 9222, run this command: kill `sudo lsof -t -i:9222`