Shell script: install ncftp on centos7 to upload directories to ftp in batches

Flaws of the ftp command

In FTP, putcommands are usually used to upload individual files, not entire folders. If you want to upload entire folders, you can use ncftpcommand line tools or other FTP clients that support recursive uploads.

Here is ncftpan example of recursively uploading folders using the command line tool:

#!/bin/bash

# 设置变量
FTP_SERVER="192.xx.xx.xx"
FTP_USER="user-xxx"
FTP_PASS="passwd-xxx"
LOCAL_DIR="/path/to/local/folder"
REMOTE_DIR="/path/on/remote/server/"

# 使用ncftp命令上传文件夹
ncftp -u $FTP_USER -p $FTP_PASS $FTP_SERVER << EOF
cd $REMOTE_DIR
mkdir $(basename "$LOCAL_DIR")
cd $(basename "$LOCAL_DIR")
lcd $LOCAL_DIR
put -R ./*
bye
EOF

Please /path/to/local/folderreplace with the path of the actual local folder to be uploaded, and replace /path/on/remote/server/with the path of the remote directory of the folder to be stored on the FTP server.

In the script, we use ncftpcommands to connect to the FTP server and provide a series of commands in input redirection. -uand -poptions are used to provide FTP username and password for authentication. We then executed the following FTP commands in sequence:

• cd: Switch to the remote directory.
• mkdir: Create a folder on the remote server with the same name as the local folder.
• cd: Switch to the newly created remote folder.
• lcd: Switch to the local folder.
• put -R: Recursively upload the local folder to the remote server.

By using an FTP client that supports recursive uploads, for example ncftp, you can upload an entire folder to a specified FTP server in a shell script.

install ncftp

yum install epel-release -y

yum install ncftp -y

ncftp upload multiple directories at once

In the FTP protocol, put -Rcommands are used to recursively upload the contents of a directory and its subdirectories to a remote server. It does not support uploading multiple directories at once.

If you want to upload multiple directories at once, you can write a loop or use other script logic to do it. Here is an example script that demonstrates how to upload multiple directories at once:

#!/bin/bash

# 设置变量
FTP_SERVER="192.xx.xx.xx"
FTP_USER="user-xxx"
FTP_PASS="passwd-xxx"
REMOTE_DIR="/path/on/remote/server/"

# 定义本地目录列表
LOCAL_DIRS=(
  "/path/to/local/dir1"
  "/path/to/local/dir2"
  "/path/to/local/dir3"
)

# 使用ncftp命令上传多个目录
for dir in "${LOCAL_DIRS[@]}"; do
  ncftpput -R -u $FTP_USER -p $FTP_PASS $FTP_SERVER $REMOTE_DIR "$dir"
done

In the script, we first define an LOCAL_DIRSarray containing multiple local directory paths to upload. Then, use fora loop to iterate through the array, ncftpputuploading each directory one by one to the remote server using commands.

Make sure to replace /path/to/local/dir1, /path/to/local/dir2etc. with the actual local directory path to be uploaded and will be /path/on/remote/server/replaced with the remote path of the directory to be stored on the FTP server.

In this way, you can upload multiple directories to a specified FTP server at one time in a shell script.