Find Largest Files and Directories

# Top 20 largest files under a path
find /var -type f -printf '%s\t%p\n' 2>/dev/null | sort -rn | head -20 | numfmt --to=iec --field=1

# Top 10 largest directories at one level deep
du -sh /var/* 2>/dev/null | sort -rh | head -10

# Recursive top-N (slower — finds the biggest leaf dirs)
du -ah /var 2>/dev/null | sort -rh | head -20

# Interactive — best UX for exploration (must be installed)
ncdu /var

# Largest files older than 30 days (good cleanup candidates)
find / -type f -mtime +30 -printf '%s\t%TY-%Tm-%Td\t%p\n' 2>/dev/null \
    | sort -rn | head -20 | numfmt --to=iec --field=1