linux

docker disk usage

Find large directories


        bash
        
            
        
     
du -ah / | sort -h -r | head -n 20

Find containers using a given volume


        lua
        
            
        
     
docker ps -a --filter volume=<volume>

Remove container and its associated volume


        bash
        
            
        
     
docker rm -v container

See total volume, image, container space


        bash
        
            
        
     
docker system df

See space used per volume


        bash
        
            
        
     
docker system df -v

Remove dangling volumes from disk


        undefined
        
            
        
     
docker volume prune


        perl
        
            
        
     
sudo netstat -ltnp | grep -w ':80'

Install ntpdate


        undefined
        
            
        
     
sudo apt install ntpdate

Sync


        css
        
            
        
     
sudo ntpdate time.windows.com

Prefer ~/ over /mnt when filesystem performance is needed

Force linux to drop the page cache


        bash
        
            
        
     
echo 1 | sudo tee /proc/sys/vm/drop_caches

Create a %UserProfile%\.wslconfig file


        ini
        
            
        
     
[wsl2]
memory=6GB
swap=0
localhostForwarding=true

WSL2 clock drifts if left open when Windows sleeps. Fix with:


        undefined
        
            
        
     
sudo hwclock -s

Running into EMFILE errors because too many files open? (looking at you npm i):


        powershell
        
            
        
     
mylimit=8000
sudo prlimit --nofile=$mylimit --pid $$; ulimit -n $mylimit
su $USER


        bash
        
            
        
     
sudo prlimit -p "$$" --nofile=10000:10000
exec $SHELL
ulimit -n 10000

A guide and tools for running macOS on QEMU/KVM. Supports running modern macOS versions including Monterey, Ventura and Sonoma using OpenCore.