Red Hat Linux Installation FTP service

First, the system environment

   1.vmware workstation pro install Linux virtual machine

   2.Linux: Linux Red Hat Enterprise Linux 7.0

Second, configure the local yum source

  Connection

    On wmware workstation pro, click Virtual Machine-> Settings-> CD / DVD-> Use ISO image file-> Browse, find the ISO image file of Linux Red Hat Enterprise Linux 7.0, and then confirm.

  2. Configure yum local source

    (1) Hang on CD (ISO image file)

     mkdir / media / cdrom

     mount / dev / cdrom / media / cdrom

    (2) Set the ISO image file to be mounted automatically at boot

     df -T #View ISO file type

     vi / etc / fstab

     #Add the content to automatically mount at boot

     /usr/local/src/rhel-server-7.0-x86_64-dvd.iso / media / cdrom iso9660 default, ro, loop 0 0

     #ISO where path is hung to this directory file type

     (3) Create a new xxx.repo file in the /etc/yum.repos.d/ directory, and modify this file. Copy the media.repo in / media / cdrom directly to the /etc/yum.repos.d/ directory

      cp / media / cdrom /etc/yum.repos.d/

      #Modify the media.repo file

      vim /etc/yum.repos.d/media.repo

      [InstallMedia]

      name = Red Hat Enterprise Linux 7.2

      baseurl = file: /// media / cdrom

      eabled = 1

      mediaid = 1446216863.790260

      metadata_expire = -1

      gpgcheck = 1 (if it is 1, don't set gpgkey)

      gpgkey = file: /// media / cdrom / RPM-GPG-KEY-redhat-release cost = 500

     : Wq #save and exit

     (4) Use the yum command to automatically install the vsftpd service

      yum clean all #clear yum cache
      yum makecache #cache package information in local yum source

      yum install vsftpd #install vsftpd
      rpm -qa vsftpd #Query all directories and files where httpd is installed

     (5) Start, stop, restart, and start automatically when the service starts. Take vsftpd as an example.

      systemctl start vsftpd.service #Start Apache
      systemctl stop vsftpd.service #stop apache
      systemctl restart vsftpd.service #Restart apache
      systemctl enable vsftpd.service #Set the boot to start

      systemctl status httpd.service #View the running status of the vsftpd service
      ps ef | grep vsftpd #Check if there is a vsftpd process

     (6) Configure vsftpd service

      Creating FTP users, setting up FTP directories, and restricting FTP connection to the system

      mkdir / data

      useradd ftpuser -d / data -s / sbin / nologin

      Set the password of the ftpuser user

      passwd ftpuser

     (7) Modify the configuration file of vsftpd

      vim /etc/vsftpd/vsftpd.conf

      anonymous_enable = NO #Do not allow anonymous login

      local_enable = YES #Allow local access

      Others are modified as required. After saving the configuration, you need to restart the vsftpd service

     (8) Configure the firewall to allow access to port 21 of this machine

      firewall-cmd --permanent --add-port = 21 \ tcp

      firewall-cmd --reload #Refresh the firewall list

      firewall-cmd --list-all #View the firewall list

      systemctl start firwalld.service #Start the firewall
      systemctl stop firwalld.service #Stop the firewall
      systemctl restart firwalld.service #Restart the firewall
      systemctl status firwalld.service #View firewall status
      systemctl enable firwalld.service #Set the boot to start

     (9) Close SELinux

      Modify selinux state temporarily

      getenfoce #View selinux status

      setenfoce 0 #Alarm status

      setenfoce 1 #Open state

      "Permanent" change color linux status

       vim / etc / sysconfig / selinux

       SELINUX = enfocing #Enable selinux

       SELINUX = permissive #Alarm status

       SELINUX = disabled #close selinux

       Effective after restart

Third, test on the physical machine

   1. Anonymous login (before modifying the configuration file)

    Run cmd.exe

    ftp ip address

    Username is ftp, no password; login after entering

    2. Username Login

    ftp ip address

    Enter username ftpuser and password; log in after entering

    3. Test with filezilla.exe client

    Enter IP address, user, password and port

Fourth, FTP operation commands

ascii

Enter ASCII mode for transferring text files.

binary

Enter binary mode for transferring binary files.

cd directory name

Change the working directory of the remote computer.

close

End the FTP session with the remote computer and return to the FTP command status. After running the close command, the user can connect to a new system or exit from FTP.

delete file name

Deletes the file with the specified name from the remote system.

dir directory or file

On the remote computer, list all directories or files.

hash

Let FTP display a # every time a block of data is transferred with the get or put command. Useful when users are not sure whether the network is working. This gives you a visible signal that confirms that data is being transmitted. When transferring large files, if FTP displays this message, the transfer is in progress. The hash command is a boolean variable command. Use the hash command to turn on the display # switch, and then use the hash command to turn off the display.

help command

Displays a piece of help text about the command.

lcd directory

Changes the missing directory to the specified directory on the local computer.

ls

List a short directory on the remote computer with the same parameters as dir.

mget file list

Get multiple files from a remote computer. The file list can be a list of file names separated by spaces. Or often with * which expresses arbitrary files and express anything at this location? Match type structure.

mput file list

Transfer multiple files to a remote computer.

open

Connect to the specified computer. This is useful if you want to connect to a new system after transferring files from one system. You must first close the original connection.

prompt

When using mget or mput, the prompt command lets FTP prompt you to confirm before transferring each file. This prevents overwriting existing files. When the prompt command is issued, if the prompt is already enabled, FTP will turn off the prompt. At this time, all files are transferred without any questions.

pwd

Displays the name of the remote current directory.

lcd

Display the current directory of the local computer.

quit

Close all currently open connections and exit FTP.

user

Send the user name to a remote computer to log in. Use this command when the user name and password are not entered correctly. It can be used without closing the current connection.

!

On UNIX systems, when running FTP, you can run without leaving FTP! After typing the UXIN command.

CTRL + C

Interrupt FTP command.