有些坑爹发行版比如 Kali Linux 没有附带 raspi-config 这个工具，于是默认状态下用不满 SD 卡。经过查找我找到了提取出来的脚本，以备日后使用。
直接安装方法：
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sudo wget -O /boot/raspi-expand-rootfs.sh http://dl.linhost.info/file1/raspi-expand-rootfs.sh sudo chmod +x /boot/raspi-expand-rootfs.sh sudo sh /boot/raspi-expand-rootfs.sh sudo reboot |
原始脚本如下：
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#!/bin/sh # # Resize the root filesystem of a newly flashed Raspbian image. # Directly equivalent to the expand_rootfs section of raspi-config. # No claims of originality are made. # Mike Ray. Feb 2013. No warranty is implied. Use at your own risk. # # Run as root. Expands the root file system. After running this, # reboot and give the resizefs-once script a few minutes to finish expanding the file system. # Check the file system with 'df -h' once it has run and you should see a size # close to the known size of your card. # # Get the starting offset of the root partition PART_START=$(parted /dev/mmcblk0 -ms unit s p | grep "^2" | cut -f 2 -d:) [ "$PART_START" ] || return 1 # Return value will likely be error for fdisk as it fails to reload the # partition table because the root fs is mounted fdisk /dev/mmcblk0 <<EOF p d 2 n p 2 $PART_START p w EOF # now set up an init.d script cat <<EOF > /etc/init.d/resize2fs_once && #!/bin/sh ### BEGIN INIT INFO # Provides: resize2fs_once # Required-Start: # Required-Stop: # Default-Start: 2 3 4 5 S # Default-Stop: # Short-Description: Resize the root filesystem to fill partition # Description: ### END INIT INFO . /lib/lsb/init-functions case "$1" in start) log_daemon_msg "Starting resize2fs_once" && resize2fs /dev/mmcblk0p2 && rm /etc/init.d/resize2fs_once && update-rc.d resize2fs_once remove && log_end_msg $? ;; *) echo "Usage: $0 start" >&2 exit 3 ;; esac EOF chmod +x /etc/init.d/resize2fs_once && update-rc.d resize2fs_once defaults && echo "Root partition has been resized. The filesystem will be enlarged upon the next reboot" |
来源：Expand the Root Partition in Kali Linux for the Raspberry Pi