How to mv some files without suffix?

I want to convert a mudlib transcoding from gbk to utf8,. I can convert suffixed files such as * .c and * .h to * .c.bak and * .h.bak save, and then:
find. -type f-name "* .c" | xargs-I {} sh-c "mv {} .bak {}"
can be saved.

the problem is that some text file names do not have a suffix. I need how to write to rename such xxx.bak files to xxx ? I have tried:
find. -type f-not-name "* .c" | xargs-I {} sh-c "mv {}. Bak {}"
because I haven"t come across a file like xxx.bak.bak , so it can still be used. Is there any good way to solve such a problem?

Xargs find bash

Mar.20,2021

add a condition to find -and-not-name "* .bak" .
find. -type f-not-name "* .c"-and-not-name "* .h"-and-not-name "* .bak" | xargs-I {} sh-c "mv {}. Bak {}" .

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MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b3b2fc-2c2a0.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b3b2fc-2c2a0.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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