执行
sudo apt update
出现这个错误：
W: http://raspbian.raspberrypi.com/raspbian/dists/bookworm/InRelease: Key is stored in legacy tusted.gpg keyring (/etc/apt/trusted.gpg), see the DEPRECATION section in apt-key(8) for de trails.
解决方法：
$ apt-key list | grep -A4 "trusted.gpg$"
Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead (see apt-key(8)).
/etc/apt/trusted.gpg
--------------------
pub rsa2048 2012-04-01 [SC]
A0DA 38D0 D76E 8B5D 6388 7281 9165 938D 90FD DD2E
uid [ unknown] Mike Thompson (Raspberry Pi Debian armhf ARMv6+VFP) <mpthompson@gmail.com>
$ sudo apt-key export 90FDDD2E | sudo gpg --dearmor -o /tmp/raspi.gpg
Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead (see apt-key(8)).
$ file /tmp/raspi.gpg
/tmp/raspi.gpg: OpenPGP Public Key Version 4, Created Sun Apr 1 21:02:33 2012, RSA (Encrypt or Sign, 2048 bits); User ID; Signature; OpenPGP Certificate
$ sudo apt-key del 90FDDD2E
Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead (see apt-key(8)).
OK
$ sudo mv /tmp/raspi.gpg /etc/apt/trusted.gpg.d/
标签：gpg,keyring,apt,see,key,trusted
From： https://www.cnblogs.com/zhicheng1/p/18593907