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https://github.com/kevinveenbirkenbach/linux-image-manager.git
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70 lines
2.0 KiB
Bash
70 lines
2.0 KiB
Bash
#!/bin/bash
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# This script allows you to chroot ("work on")
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# the raspbian sd card as if it's the raspberry pi
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# on your Ubuntu desktop/laptop
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# just much faster and more convenient
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# credits: https://gist.github.com/jkullick/9b02c2061fbdf4a6c4e8a78f1312a689
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# make sure you have issued
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# (sudo) apt install qemu qemu-user-static binfmt-support
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# Write the raspbian image onto the sd card,
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# boot the pi with the card once
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# so it expands the fs automatically
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# then plug back to your laptop/desktop
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# and chroot to it with this script.
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# Invoke:
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# (sudo) ./chroot-to-pi.sh /dev/sdb
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# assuming /dev/sdb is your sd-card
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# if you don't know, when you plug the card in, type:
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# dmesg | tail -n30
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# Note: If you have an image file instead of the sd card,
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# you will need to issue
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# (sudo) apt install kpartx
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# (sudo) kpartx -v -a 2017-11-29-raspbian-stretch-lite.img
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# then
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# (sudo) ./chroot-to-pi.sh /dev/mapper/loop0p
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# With the vanilla image, you have very little space to work on
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# I have not figured out a reliable way to resize it
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# Something like this should work, but it didn't in my experience
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# https://gist.github.com/htruong/0271d84ae81ee1d301293d126a5ad716
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# so it's better just to let the pi resize the partitions
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mkdir -p /mnt/raspbian
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# mount partition
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mount -o rw ${1}2 /mnt/raspbian
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mount -o rw ${1}1 /mnt/raspbian/boot
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# mount binds
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mount --bind /dev /mnt/raspbian/dev/
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mount --bind /sys /mnt/raspbian/sys/
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mount --bind /proc /mnt/raspbian/proc/
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mount --bind /dev/pts /mnt/raspbian/dev/pts
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# ld.so.preload fix
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sed -i 's/^/#CHROOT /g' /mnt/raspbian/etc/ld.so.preload
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# copy qemu binary
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cp /usr/bin/qemu-arm-static /mnt/raspbian/usr/bin/
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echo "You will be transferred to the bash shell now."
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echo "Issue 'exit' when you are done."
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echo "Issue 'su pi' if you need to work as the user pi."
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# chroot to raspbian
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chroot /mnt/raspbian /bin/bash
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# ----------------------------
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# Clean up
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# revert ld.so.preload fix
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sed -i 's/^#CHROOT //g' /mnt/raspbian/etc/ld.so.preload
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# unmount everything
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umount /mnt/raspbian/{dev/pts,dev,sys,proc,boot,}
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