alastair@PC-I5 ~/cctv/other/xm550ai $ ll
total 29712
drwxrwxr-x 2 alastair alastair 4096 Nov 27 15:39 ./
drwxr-xr-x 51 alastair alastair 4096 Nov 27 15:28 ../
-rw-rw-r-- 1 alastair alastair 13374272 Nov 27 15:27 full_dump_xm550ai.zip
-rw-r--r-- 1 alastair alastair 8650752 Nov 8 12:30 full.img
-rw-r--r-- 1 alastair alastair 262144 Nov 8 12:30 mtdblock0.img
-rw-r--r-- 1 alastair alastair 1572864 Nov 8 12:30 mtdblock1.img
-rw-r--r-- 1 alastair alastair 1310720 Nov 8 12:30 mtdblock2.img
-rw-r--r-- 1 alastair alastair 4653056 Nov 8 12:30 mtdblock3.img
-rw-r--r-- 1 alastair alastair 262144 Nov 8 12:30 mtdblock4.img
-rw-r--r-- 1 alastair alastair 327680 Nov 8 12:30 mtdblock5.img
alastair@PC-I5 ~/cctv/other/xm550ai $ file *
full_dump_xm550ai.zip: Zip archive data, at least v?[0x314] to extract
full.img: AmigaOS bitmap font
mtdblock0.img: AmigaOS bitmap font
mtdblock1.img: u-boot legacy uImage, Linux-3.10.103+, Linux/ARM, OS Kernel Image (Not compressed), 1465240 bytes, Fri Jul 19 09:47:15 2019, Load Address: 0x80008000, Entry Point: 0x80008000, Header CRC: 0x8361EFB7, Data CRC: 0x60C9755F
mtdblock2.img: Linux Compressed ROM File System data, little endian size 1060864 version #2 sorted_dirs CRC 0xb6842e7f, edition 0, 555 blocks, 159 files
mtdblock3.img: Squashfs filesystem, little endian, version 1024.0, compressed, -1554522524698542080 bytes, 889257984 inodes, blocksize: 256 bytes, created: Tue May 24 11:43:25 2016
mtdblock4.img: Linux Compressed ROM File System data, little endian size 180224 version #2 sorted_dirs CRC 0xfebe7249, edition 0, 103 blocks, 51 files
mtdblock5.img: Linux jffs2 filesystem data little endian
alastair@PC-I5 ~/cctv/other/xm550ai $ mkdir tmp
alastair@PC-I5 ~/cctv/other/xm550ai $ sudo mount -t cramfs mtdblock2.img tmp
alastair@PC-I5 ~/cctv/other/xm550ai $ ll tmp
total 6
drwxr-xr-x 1 549 operator 1100 Jan 1 1970 bin/
drwxr-xr-x 1 549 operator 0 Jan 1 1970 boot/
drwxr-xr-x 1 549 operator 0 Jan 1 1970 dev/
drwxr-xr-x 1 549 operator 184 Jan 1 1970 etc/
drwxr-xr-x 1 549 operator 0 Jan 1 1970 home/
drwxr-xr-x 1 549 operator 940 Jan 1 1970 lib/
lrwxrwxrwx 1 549 operator 11 Jan 1 1970 linuxrc -> bin/busybox*
drwxr-xr-x 1 549 operator 68 Jan 1 1970 mnt/
drwxr-xr-x 1 549 operator 0 Jan 1 1970 proc/
drwxr-xr-x 1 549 operator 0 Jan 1 1970 root/
drwxr-xr-x 1 549 operator 516 Jan 1 1970 sbin/
drwxr-xr-x 1 549 operator 0 Jan 1 1970 sys/
drwxr-xr-x 1 549 operator 0 Jan 1 1970 tmp/
drwxr-xr-x 1 549 operator 48 Jan 1 1970 usr/
drwxr-xr-x 1 549 operator 0 Jan 1 1970 var/
alastair@PC-I5 ~/cctv/other/xm550ai $ unsquashfs -d tmp1 mtdblock3.img
Parallel unsquashfs: Using 4 processors
296 inodes (397 blocks) to write
[===================================================================================================================|] 397/397 100%
created 295 files
created 13 directories
created 1 symlinks
created 0 devices
created 0 fifos
alastair@PC-I5 ~/cctv/other/xm550ai $ ll tmp1
total 32
drwxrwxr-x 8 alastair alastair 4096 Jul 29 2019 ./
drwxrwxr-x 4 alastair alastair 4096 Nov 27 15:39 ../
drwxrwxr-x 3 alastair alastair 4096 Jul 29 2019 bin/
drwxrwxr-x 2 alastair alastair 4096 Jul 29 2019 etc/
drwxrwxr-x 3 alastair alastair 4096 Jul 29 2019 lib/
drwxrwxr-x 2 alastair alastair 4096 Jul 29 2019 sbin/
drwxrwxr-x 4 alastair alastair 4096 Jul 29 2019 share/
drwxrwxr-x 2 alastair alastair 4096 Jul 29 2019 web/
alastair@PC-I5 ~/cctv/other/xm550ai $