Git does not have an add, to directly commit a file, what is the difference with the first add, commit?

After

git commit demo1.txt, it is still added to the version library

CPP node.js java github git
Mar.09,2021

for files that are not in the warehouse, git commit file cannot submit

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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-64f5-1b3746d-2c074.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b3746d-2c074.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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