74 lines
1.6 KiB
Bash
Executable File
74 lines
1.6 KiB
Bash
Executable File
#!/bin/bash
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# 由 busybox 创建一个最小的文件系统 | 不含编译部分
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# 创建目录并拷贝文件
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set -e
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set -x
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cp ./.config_busybox ../miniroot
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cp ./init_busybox ../miniroot
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cd .. || exit
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# 工作目录改动到 miniroot
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cd miniroot
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if [ -e "./busybox" ]; then
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read -r -t 10 -p "./busybox\" 已存在,是否删除? (回车确认,其他键取消,10s 超时)" confirm
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if [[ $confirm == "" ]]; then
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rm -rf "./busybox/*"
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else
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exit 1
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fi
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fi
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# 如果 busybox 不存在则下载
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if [ ! -e "./busybox-1.36.1.tar.bz2" ]; then
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wget https://busybox.net/downloads/busybox-1.36.1.tar.bz2
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fi
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if [ ! -e "./busybox-1.36.1" ]; then
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tar -xjf busybox-1.36.1.tar.bz2
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fi
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cd busybox-1.36.1
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if [ ! -e "./build" ]; then
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mkdir build
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fi
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# make O=build menuconfig
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# 在 settings Build Options 中选择 # [*] Build static binary (no sharedd libs)
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if [ ! -e "./build/.config" ]; then
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mv ../.config_busybox ./build/.config
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fi
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if [ -z "$(ls -A build/_install/)" ]; then
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# build/_install/ is empty"
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cd build
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make -j8 V=1
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make install
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fi
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cd .. || exit
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mkdir -pv busybox
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cd busybox || exit
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mkdir -pv {bin,sbin,etc,proc,sys,usr/{bin,sbin}}
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cp -av ../busybox-1.36.1/build/_install/* .
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# 写入 init 文件并设置权限
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mv ../init_busybox init
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chroot . /bin/sh -c "chmod u+x /init" # 可能需要 sudo
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echo "最小化 Busybox 系统创建成功！"
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# 打包文件系统
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if read -r -t 10 -p "打包镜像? (10秒 超时取消)" confirm; then
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find . -print0 | cpio --null -ov --format=newc | gzip -9 >../busybox.cpio.gz
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echo "打包完毕"
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else
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echo "取消打包"
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fi
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