虚拟机中的杯具，提醒调试脚本的朋友避开这个问题
遍历磁盘的脚本，调试时输出结果看看就杯具了，杯具代码如下for diskdevname in $(blkid /dev/sd* | cut -d ":" -f1); do
diskmountdir=/media/live_"${diskdevname#/dev/}"
echo $diskmountdir ------------>$diskdevname
done
在控制台想看一下效果，一个管道符造成字符串注入磁盘分区设备，奇怪的是LINUX的分区还能访问，FAT和NTFS的都挂了。
bash-4.2# blkid
/dev/sr0: LABEL="livecnc" TYPE="iso9660"
/dev/sr1: LABEL="CDLINUX" TYPE="iso9660"
/dev/sda1: UUID="8bc00b9f-246c-424b-ae3e-8796d4ed01d0" TYPE="ext2"
/dev/sda5: UUID="d2f8e73c-6d9a-4c7f-96df-7e8f432d92d3" TYPE="swap"
/dev/sdb5: UUID="d9d0cf0d-33af-44cf-9afe-a5f51aaaccf9" TYPE="ext2"
bash-4.2# fdisk -l
Disk /dev/sda: 10.7 GB, 10737418240 bytes
255 heads, 63 sectors/track, 1305 cylinders, total 20971520 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0003a8f5
Device Boot Start End Blocks IdSystem
/dev/sda1 63 14329979 7164958+83Linux
/dev/sda2 14329980 20964824 3317422+ 5Extended
/dev/sda5 14330043 15374204 522081 83Linux
/dev/sda6 15374268 20964824 2795278+ 7HPFS/NTFS/exFAT
Disk /dev/sdb: 2147 MB, 2147483648 bytes
255 heads, 63 sectors/track, 261 cylinders, total 4194304 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000d563d
Device Boot Start End Blocks IdSystem
/dev/sdb1 2048 2099199 1048576 bW95 FAT32
/dev/sdb2 2099200 4194303 1047552 5Extended
/dev/sdb5 2101248 4194303 1046528 83Linux :roll:
把手剁了吧……
所以啊，没事别用 root 权限…… 虚拟机中调试，为的就是应付危险的操作，调试搜索ISO的脚本，想尝试在live cd加载好根目录后调用systemd提高装载速度。
页:
[1]