2020-05-02 11:46:39 +02:00
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#!/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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2020-05-15 10:41:44 +02:00
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# shellcheck source=/dev/null # Deactivate SC1090
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# shellcheck disable=SC2015 # Deactivating bool hint
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source "$(dirname "$(readlink -f "${0}")")/../base.sh" || (echo "Loading base.sh failed." && exit 1)
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info "Making mount dir..." &&
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mkdir -p /mnt/raspbian ||
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error "Failed."
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info "Mount partitions..."
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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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error "Failed."
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info "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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2020-05-15 10:42:49 +02:00
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mount --bind /dev/pts /mnt/raspbian/dev/pts ||
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2020-05-15 10:41:44 +02:00
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error "Failed."
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info "ld.so.preload fix" &&
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sed -i 's/^/#CHROOT /g' /mnt/raspbian/etc/ld.so.preload ||
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error "Failed."
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info "copy qemu binary" &&
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cp -v /usr/bin/qemu-arm-static /mnt/raspbian/usr/bin/ ||
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error "Failed."
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info "You will be transferred to the bash shell now." &&
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info "Issue 'exit' when you are done." &&
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info "Issue 'su pi' if you need to work as the user pi." &&
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info "chroot to raspbian" &&
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chroot /mnt/raspbian /bin/bash ||
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error "Failed."
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info "Clean up" &&
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info "revert ld.so.preload fix" &&
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sed -i 's/^#CHROOT //g' /mnt/raspbian/etc/ld.so.preload ||
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error "Failed."
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info "unmount everything" &&
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umount /mnt/raspbian/{dev/pts,dev,sys,proc,boot,} ||
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error "Failed."
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