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Questions for beginners! Hope experts can help you !!!

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Author: User
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Questions for beginners! Hope experts can help you !!! -- Linux general technology-Linux technology and application information. For details, refer to the following section. I am a beginner in linux and have encountered some problems. It is about vsftp setting virtual users.
# Vi account.txt
Test1
12356
......
# Db_load-T-t hash-f./account.txt/etc/vsftp/account. db
# Chmod 600/etc/vsftp/account. db
# Vi/etc/pam. d/vsftp. vu
Auth required/lib/security/pam. userdb. so db =/etc/vsftp/account
Account required/lib/security/pam. userdb. so db =/etc/vsftp/account
# Useradd-d/home/virtualftp
# Chmod 700/home/virtualftp
# Chown virtualftp. virtualftp/home/virtualftp
I cannot understand # db_load-T-t hash-f. /account.txt/etc/vsftp/account. the meaning of db and # chown virtualftp. virtualftp/home/virtualftp, Here virtualftp. what does virtualftp mean?
Thank you !!!

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