How to solve the Linux dpkg:error processing install-info

The code is as follows:

Setting Install-info (5.2.0.dfsg.1-2) ...
/etc/environment:line 2:class_path:command not found
Dpkg:error Processing Package Install-info (--configure):
Child process installed Post-Installation script returned error number 127
E:sub-process/usr/bin/dpkg returned an error code (1)

Solution:

1. Rename the Info folder: mv/var/lib/dpkg/info//var/lib/dpkg/info_old/
2. Create a new info folder: mkdir/var/lib/dpkg/info/
3.apt-get update:apt-get Update
4. Reinstall: Apt-get-f Install
5. After performing the previous step, you will generate some files under the new Info folder, and now move all these files to the Info_old folder: mv/var/lib/dpkg/info/*/var/lib/dpkg/info_old/
6. Delete your new info folder: Rm-rf/var/lib/dpkg/info
7. Change the Info_old folder back to info:mv/var/lib/dpkg/info_old//var/lib/dpkg/info/
8. Reinstall the software that needs to be installed