1.Linux service命令
2.VSFTP无法正常登陆，码下错误代码530
3.虚拟机Linux系统解压vsftp.tar.gz后怎么手动安装
Linux service命令
一堆人都没有回答到关键，码下提示未被识别的码下命令，所谓命令，码下ros源码分析3当然是码下指service未被识别了。楼主看看是码下不是启动vsftp时,service拼写错误？
vsftpd这个服务名在最新版也没有变过。
建议如下：
一、码下在/etc/init.d/目录看看能不能找到vsftpd
find /etc/init.d|grep vsftpd
二、码下使用/etc/init.d/vsftpd start看是码下否可以启动
三、vsftpd是码下编译的，有没有在编译之前，码下放烟花表白源码系统自带有vsftpd，码下如果有，码下那么编译时指定单独路径，码下并且在编译后的码下路径下去启动vsftpd，也可以把启动加入到系统服务。openfire源码添加插件
VSFTP无法正常登陆，错误代码
方法一：登录出现 vsftpd login incorrect 报错。
解决方法：
cp Path/RedHat/vsftpd.pam /etc/pam.d/ftp
path为vsftp解压缩源文件目录
这是因为我们RHEL启用了PAM,所在用到vsftp时需要用到 /etc/pam.d/ftp这个文件（默认源码安装的不会有这个文件），因此除了匿名用户外本地用户无法登录。
方法二：
在测试Checkpoint的电影智能源码***1 R6x的时候，遇到了这个错误。这说明client端跟server端的连接性是没问题。但是就是想不出为什么，还以为是用户名和口令错误呢。后来才google了一下，lvgl源码复杂吗发现是server端的配置有问题。
检查/etc/vsftpd/user_list和/etc/ftpusers，是这个文件/etc/vsftpd/vsftpd.conf少了一行：
复制代码
代码如下:
pam_service_name=vsftpd
$ echo ‘pam_service_name=vsftpd’ /etc/vsftpd/vsftpd.conf
$ service vsftpd restart
error就消除了！
下面是更详细的方法：
[root@atr-3-server1 admin]# cat /etc/vsftpd/vsftpd.conf
# Example config file /etc/vsftpd.conf
#
# The default compiled in settings are fairly paranoid. This sample file
# loosens things up a bit, to make the ftp daemon more usable.
# Please see vsftpd.conf.5 for all compiled in defaults.
#
# READ THIS: This example file is NOT an exhaustive list of vsftpd options.
# Please read the vsftpd.conf.5 manual page to get a full idea of vsftpd's
# capabilities.
#
# Allow anonymous FTP? (Beware - allowed by default if you comment this out).
anonymous_enable=no
#
# Uncomment this to allow local users to log in.
local_enable=YES
#
# Uncomment this to enable any form of FTP write command.
write_enable=YES
#
# Default umask for local users is . You may wish to change this to ,
# if your users expect that ( is used by most other ftpd's)
local_umask=
#
# Uncomment this to allow the anonymous FTP user to upload files. This only
# has an effect if the above global write enable is activated. Also, you will
# obviously need to create a directory writable by the FTP user.
#anon_upload_enable=YES
#
# Uncomment this if you want the anonymous FTP user to be able to create
# new directories.
#anon_mkdir_write_enable=YES
#
# Activate directory messages - messages given to remote users when they
# go into a certain directory.
dirmessage_enable=YES
#
# Activate logging of uploads/downloads.
xferlog_enable=YES
#
# Make sure PORT transfer connections originate from port (ftp-data).
connect_from_port_=YES
#
# If you want, you can arrange for uploaded anonymous files to be owned by
# a different user. Note! Using "root" for uploaded files is not
# recommended!
#chown_uploads=YES
#chown_username=whoever
#
# You may override where the log file goes if you like. The default is shown
# below.
#xferlog_file=/var/log/vsftpd.log
#
# If you want, you can have your log file in standard ftpd xferlog format
xferlog_std_format=YES
#
# You may change the default value for timing out an idle session.
#idle_session_timeout=
#
# You may change the default value for timing out a data connection.
#data_connection_timeout=
#
# It is recommended that you define on your system a unique user which the
# ftp server can use as a totally isolated and unprivileged user.
#nopriv_user=ftpsecure
#
# Enable this and the server will recognise asynchronous ABOR requests. Not
# recommended for security (the code is non-trivial). Not enabling it,
# however, may confuse older FTP clients.
#async_abor_enable=YES
#
# By default the server will pretend to allow ASCII mode but in fact ignore
# the request. Turn on the below options to have the server actually do ASCII
# mangling on files when in ASCII mode.
# Beware that turning on ascii_download_enable enables malicious remote parties
# to consume your I/O resources, by issuing the command "SIZE /big/file" in
# ASCII mode.
# These ASCII options are split into upload and download because you may wish
# to enable ASCII uploads (to prevent uploaded scripts etc. from breaking),
# without the DoS risk of SIZE and ASCII downloads. ASCII mangling should be
# on the client anyway..
#ascii_upload_enable=YES
#ascii_download_enable=YES
#
# You may fully customise the login banner string:
#ftpd_banner=Welcome to blah FTP service.
#
# You may specify a file of disallowed anonymous e-mail addresses. Apparently
# useful for combatting certain DoS attacks.
#deny_email_enable=YES
# (default follows)
#banned_email_file=/etc/vsftpd.banned_emails
#
# You may specify an explicit list of local users to chroot() to their home
# directory. If chroot_local_user is YES, then this list becomes a list of
# users to NOT chroot().
#chroot_list_enable=YES
# (default follows)
#chroot_list_file=/etc/vsftpd.chroot_list
#
# You may activate the "-R" option to the builtin ls. This is disabled by
# default to avoid remote users being able to cause excessive I/O on large
# sites. However, some broken FTP clients such as "ncftp" and "mirror" assume
# the presence of the "-R" option, so there is a strong case for enabling it.
#ls_recurse_enable=YES
pam_service_name=vsftpd
userlist_enable=YES
#enable for standalone mode
listen=YES
tcp_wrappers=YES
虚拟机Linux系统解压vsftp.tar.gz后怎么手动安装
这个嘛，简单说下。如果是生产使用。去官网或者centos git下载release版本。非root用户安装，--prefix=/usr/local/vsftpd-x-y-x 安装目录大概选择这个. 当然也可以参照deb build。
参照centos sftpd spec文件，看看里面的编译选项，都打开了哪些？如果直接configure很可能出现各种隐藏的系统配置和漏洞问题。如有需要，对源码进行改修修正。
make之后做测试。make test。
配置项测试。