2016-04-12 05:05:00 +02:00
# PiShrink #
2016-04-22 08:25:31 +02:00
PiShrink is a bash script that automatically shrink a pi image that will then resize to the max size of the SD card on boot. This will make putting the image back onto the SD card faster and the shrunk images will compress better.
2016-04-27 10:38:35 +02:00
WARNING: You should make a backup of your image before using this. If anything goes wrong during the shrinking the image could become corrupt.
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`Usage: ./pishrink imagefile.img`
## Example ##
```bash
[user@localhost PiShrink]$ sudo ./shrink.sh pi.img
e2fsck 1.42.9 (28-Dec-2013)
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
/dev/loop1: 88262/1929536 files (0.2% non-contiguous), 842728/7717632 blocks
resize2fs 1.42.9 (28-Dec-2013)
resize2fs 1.42.9 (28-Dec-2013)
Resizing the filesystem on /dev/loop1 to 773603 (4k) blocks.
Begin pass 2 (max = 100387)
Relocating blocks XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Begin pass 3 (max = 236)
Scanning inode table XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Begin pass 4 (max = 7348)
Updating inode references XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
The filesystem on /dev/loop1 is now 773603 blocks long.
Shrunk pi.img from 30G to 3.1G
```
## Credits ##
2016-04-22 08:25:31 +02:00
Thanks to SirLagz for the code to shrink http://sirlagz.net/2013/03/10/script-automatic-rpi-image-downsizer/
