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ext4recovery/test/ff.sh
2026-04-30 11:04:05 +00:00

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# Search for /var related strings in the assembled array
# Things that would only appear in /var:
python3 -c "
import os
targets = [
b'/var/log/syslog',
b'/var/lib/apt',
b'/var/cache',
b'dpkg/status',
b'apt/lists',
b'journald',
b'/var/log/auth.log',
]
with open('/dev/nbd0', 'rb') as f:
chunk = 128*1024*1024
offset = 0
limit = 50*1024*1024*1024
while offset < limit:
f.seek(offset)
data = f.read(chunk)
if not data: break
for target in targets:
pos = data.find(target)
if pos >= 0:
abs_byte = offset + pos
ctx = data[max(0,pos-50):pos+100]
print(f'{target.decode()!r} at byte {abs_byte}')
print(f' {ctx.decode(\"latin1\",errors=\"replace\")}')
print()
offset += chunk
if offset % (1024*1024*1024) == 0:
print(f'Scanned {offset//1024//1024//1024}GB...',flush=True)
" 2>&1 | grep -v "^Scanned"