I opened a file in vim by accident. How do I quit and discard changes?
for f in $(ls *.txt) breaks on file names with spaces. What is the right way?
I committed the wrong files and have not pushed yet. How do I undo the last commit but keep my changes?
With modern compilers and -O2, is volatile still required for hardware registers, or are memory barriers enough?
kubectl logs for my pod returns nothing and the pod restarts every few seconds. How can I see why it crashes?
FROM node:22-alpine WORKDIR /app COPY . . RUN npm ci CMD npm start & docker run returns right away and docker ps shows nothing. Logs are empty.
user884120321asked 
