Programmer Think

Abstract:        Hand-in-hand teaches you how to build a vsftpd server, which implements virtual user authentication based on db files and MySQL database files. Of course, this article also includes the problem checking in the process of building, haha.        In ad ...

This morning, I suddenly wanted to change the password of an ordinary user. When root logged in and typed in the password command, I found that it prompted "passwd: authentication token operation error". [root@Geeklp-Administrator ~]# passwd Geeklp Change user Geeklp's password. New password: Invalid passw ...

By Hua Hua - December, 5th 2015 What is? SFTP ？ In understanding SFTP Before that, let's look at what it is. FTP . FTP( File Transfer Protocol )File Transfer Protocol It is a method commonly used to transfer files between two terminal systems. SFTP ...

File and Content Processing - wc, tr 1. wc: Count lines, words, or bytes of a file Functional description of wc command The wc command calculates the number of words.With the wc command, we can calculate the number of bytes, words, or columns of a file. If you do not specify a file name or give it a file name of'-', the wc command reads data ...