Android hexedit toybox tcsetattr /dev/pts/0: Permission denied
cas:/ $ /data/local/tmp/toybox-aarch64 hexedit /data/local/tmp/tree.static
hexedit: tcsetattr /dev/pts/0: Permission denied
好像是不能用tcsetattr，selinux会拒绝
cas:/ $ ls -l /dev/pts
ls: /dev/pts: Permission denied
https://blog.zhanghai.me/fixing-line-editing-on-android-8-0/
toybox没有hexdump
于是我就用busybox试了一下，发现busybox的hexedit居然可以用！神奇