Fix the error. Get on with your day.
Copy-paste fixes for Linux errors: systemd, nginx, ssh, docker, disk, permissions.
Latest fixes
All fixes →- ext4: No space left on device, but df -h shows free space
What you see Writes fail, but df -h insists there is room: $ df -h /var Filesystem Size Used Avail Use% Mounted on /dev/sda2 59G …
- Docker: permission denied on /var/run/docker.sock
What you see docker ps fails immediately with permission denied on /var/run/docker.sock, while sudo docker ps works. Nothing is …
- nginx 502: upstream prematurely closed connection
What you see The browser gets 502 Bad Gateway. error.log contains upstream prematurely closed connection while reading response …
- systemd: Failed to Start Service (exit code 203/EXEC)
What you see systemctl status myapp reports a failed unit, and the journal shows status=203/EXEC. The service never reaches your …
Tools
All tools →- Docker Socket Permission Checker
permission denied while trying to connect to the Docker daemon socket is not one error, it is four. This tool reads the two …
- Cron Expression Generator
How the five fields work Field Values Notes Minute 0-59 Hour 0-23 24-hour clock Day of month 1-31 Month 1-12 Day of week 0-7 0 and …