CentOS8 - bash: garbled characters and solutions

This situation usually occurs because the Chinese language pack is not installed or there is a problem with the default language setting.
View the current locale
echo $LANG
Found to be
zh_TW.UTF-8
However, if the Chinese language pack is not installed or enabled, garbled characters will appear.

Enter LANG=en_US to set the display to English. This command takes effect immediately but not permanently. See below for permanent effect.
At this point, enter the command again to see the English error message

If you really need Chinese prompts, you can install it like this:
yum groupinstall chinese-support
Set the local default locale
vim /etc/locale.conf add
LANG="zh_TW.UTF-8"
Immediate and permanent effect
source /etc/locale.conf
Enter locale to view the local language environment

LANG=zh_TW.UTF-8
LC_CTYPE="zh_TW.UTF-8"
LC_NUMERIC=zh_TW.UTF-8
LC_TIME=zh_TW.UTF-8
LC_COLLATE="zh_TW.UTF-8"
LC_MONETARY=zh_TW.UTF-8
LC_MESSAGES="zh_TW.UTF-8"
LC_PAPER=zh_TW.UTF-8
LC_NAME="zh_TW.UTF-8"
LC_ADDRESS="zh_TW.UTF-8"
LC_TELEPHONE="zh_TW.UTF-8"
LC_MEASUREMENT=zh_TW.UTF-8
LC_IDENTIFICATION="zh_TW.UTF-8"
LC_ALL=

Note that my language environment is Taiwan Traditional Chinese, and the simplified Chinese language should be changed from TW to CN

Appendix: Let's take a look at the solution to Chinese garbled characters in the shell script that displays utf-8 encoding format in centos

Problem phenomenon

The shell script I wrote was saved in utf-8 encoding format, but when uploaded to centos, it was displayed as garbled characters

Use file shell.sh to view the encoding format of the file

shell.sh: UTF-8 Unicode text

Workaround

Use iconv to convert the file encoding format to gb2312

iconv -f utf-8 -t gb2312 shell.sh > shell2.sh

Run file shell2.sh again to view the file encoding

linuxsec2.sh: ISO-8859 text

The Chinese garbled characters problem has been solved

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