# time 7zr a -t7z -mx=9 IOT-House_zero_w_0.02.7z IOT-House_zero_w_0.02.img
7-Zip (A) 9.20 Copyright (c) 1999-2010 Igor Pavlov 2010-11-18
p7zip Version 9.20 (locale=ja_JP.UTF-8,Utf16=on,HugeFiles=on,2 CPUs)
Scanning
Creating archive IOT-House_zero_w_0.02.7z
Compressing IOT-House_zero_w_0.02.img
Everything is Ok
real 52m27.571s
user 79m55.630s
sys 0m45.668s
# ll
-rw-r--r-- 1 root root 1351414672 10月 28 14:35 IOT-House_zero_w_0.02.7z
-rw-r--r-- 1 root root 7820279808 10月 28 13:39 IOT-House_zero_w_0.02.img