在Linux中運行一個命令嘗試是否存在，突然報錯了
Could not find the database of available applications, run update-command-not-found as root to fix this
Sorry, command-not-found has crashed! Please file a bug report at:
http://www.debian.org/Bugs/Reporting
Please include the following information with the report:
command-not-found version: 0.3
Python version: 3.7.3 candidate 1
Distributor ID: Kali
Description: Kali GNU/Linux Rolling
Release: 2019.2
Codename: n/a
Exception information:
local variable ‘cnf’ referenced before assignment
Traceback (most recent call last):
File “/usr/share/command-not-found/CommandNotFound/util.py”, line 23, in crash_guard
callback()
File “/usr/lib/command-not-found”, line 93, in main
if not cnf.advise(args[0], options.ignore_installed) and not options.no_failure_msg:
UnboundLocalError: local variable ‘cnf’ referenced before assignment
根據報錯提示需要以root用戶運行update-commond-not-found
結果又報錯了
根據報錯提示執行編輯報錯文件
打開報錯文件找到如圖
如有同樣報錯，繼續編輯報錯文件，添加所報錯的缺失項
最後執行自己的測試命令，就不存在錯誤了
