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#!/bin/bash
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# ******************************************
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# Resize Linux ext4 partition to fill sdcard
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# ******************************************
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if [ "$(id -u)" != "0" ]; then
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echo "Script must be run as root !"
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exit 0
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fi
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sdcard="/dev/mmcblk0"
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echo ""
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fdisk -l $sdcard | grep $sdcard
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echo ""
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_btrfs=`mount | grep -o btrfs`
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fat=`fdisk -l $sdcard | grep FAT16`
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if [ "${fat}" = "" ]; then
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partno="1"
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else
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partno="2"
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fi
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sdcard_part=`fdisk -l $sdcard | grep Linux | awk '{print $1}'`
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sdcard_sect=`fdisk -l $sdcard | grep "Disk $sdcard" | awk '{print $7}'`
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if [ "${sdcard_sect}" = "" ]; then
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sdcard_sect=`fdisk -l $sdcard | grep total | awk '{print $8}'`
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fi
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sdcard_end=$(expr $sdcard_sect - 1024)
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part_start=`fdisk -l $sdcard | grep Linux | awk '{print $2}'`
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part_end=`fdisk -l $sdcard | grep Linux | awk '{print $3}'`
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echo " Max block: $sdcard_end"
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echo " Part end: $part_end"
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echo " Part start: $part_start"
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echo " Part num: $partno"
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if [ ! "${_btrfs}" = "" ]; then
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echo " btrfs part: yes"
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_resize="btrfs filesystem resize max / &&"
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else
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_resize="resize2fs ${sdcard_part} &&"
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fi
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echo ""
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if [ $part_end -ge $sdcard_end ]; then
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echo "Partition allready maximum size !"
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rm /usr/local/bin/fs_resize_warning > /dev/null 2>&1
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exit 0
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fi
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echo -n "WARNING: Do you want to resize \"$sdcard_part\" (y/N)? "
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read -n 1 ANSWER
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if [ ! "${ANSWER}" = "y" ] ; then
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echo ""
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echo "Canceled.."
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exit 0
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fi
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echo ""
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# RESIZE PARTITION
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if [ "${partno}" = "1" ] ; then
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echo -e "p\nd\nn\np\n$partno\n$part_start\n$sdcard_end\np\nw" | fdisk ${sdcard} > /dev/null 2>&1
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else
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echo -e "p\nd\n$partno\nn\np\n$partno\n$part_start\n$sdcard_end\np\nw" | fdisk ${sdcard} > /dev/null 2>&1
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fi
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echo "PARTITION RESIZED."
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#/etc/init.d/resize2fs_once
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cat > /etc/init.d/resize2fs_once << _EOF_
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#!/bin/sh
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### BEGIN INIT INFO
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# Provides: resize2fs_once
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# Required-Start: \$local_fs \$remote_fs \$network \$syslog
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# Required-Stop:
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# Default-Start: 2 3 4 5 S
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# Default-Stop:
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# Short-Description: Resize the root filesystem to fill partition
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# Description:
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### END INIT INFO
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. /lib/lsb/init-functions
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case "\$1" in
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start)
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log_daemon_msg "Starting resize2fs_once" &&
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$_resize
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rm /etc/init.d/resize2fs_once &&
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update-rc.d resize2fs_once remove &&
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log_end_msg \$?
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;;
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*)
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echo "Usage: \$0 start" >&2
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exit 3
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;;
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esac
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_EOF_
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chmod +x /etc/init.d/resize2fs_once > /dev/null 2>&1
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update-rc.d resize2fs_once defaults > /dev/null 2>&1
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if [ $? -ne 0 ]; then
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echo "ERROR, run: sudo /etc/int.d/resize2fs_once start AFTER REBOOT!"
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exit 0
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fi
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REBOOT=1
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echo "*********************************************"
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echo "Rootfs Extended. Please REBOOT to take effect"
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echo "*********************************************"
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echo ""
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rm /usr/local/bin/fs_resize_warning > /dev/null 2>&1
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@ -1,2 +1,2 @@
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---
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---
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command: "/usr/local/bin/fs_resize"
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command: "/usr/sbin/fs_resize"
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