Linux Command for Download File

how do you download file using curl command line under Linux / Mac OS X / BSD or Unix like operating systems?

curl is another tool to transfer data from or to a server, using one of the supported protocols such as HTTP, HTTPS, FTP, FTPS, SCP, SFTP, TFTP, DICT, TELNET, LDAP or FILE). The command is designed to work without user interaction. curl offers many features such as:

1. Proxy support.


2. User authentication.


3. FTP upload.


4. HTTP post.


5. SSL connections.


6. Cookies.


7. File transfer resume and more.

curl download file

The syntax is as follows to grab (download) files from remote http/ftp server:

 
curl -o output.file http://server1.cyberciti.biz/file.tar.gz

OR

 
curl -O http://server1.cyberciti.biz/file.tar.gz

OR

 
curl --remote-name http://server1.cyberciti.biz/file.tar.gz

You can download a web page and store in a local file as follows:

 
curl -o nixcraft.html http://www.cyberciti.biz/low.html

You can grab or download multiple files as follows:

 
curl -O http://www.cyberciti.biz/low.html -O http://bash.cyberciti.biz/dl/581.sh.zip

curl download file from an ssh server

You can grab file securely using from an SSH server using SFTP:

 
curl -u username sftp://server1.cyberciti.biz/path/to/file.txt

OR (note ~ means your $HOME)

 
curl -u vivek sftp://home1.cyberciti.biz/~/docs/resume.pdf

You can grab a file from an SSH server using SCP using a private key to authenticate. The syntax is:

 
curl -u username: --key ~/.ssh/id_rsa --pubkey ~/.ssh/id_rsa.pub scp://home1.cyberciti.biz/~/Videos/rhn_register.ogv

Where,

• -u username - Specify the user name (and optional password) to use for server authentication.


• -u username:password - Specify the user name (and optional password) to use for server authentication.


• –key ~/.ssh/id_rsa - SSL or SSH private key file name. Allows you to provide your private key in this separate file.


• –pubkey ~/.ssh/id_rsa.pub - SSH Public key file name. Allows you to provide your public key in this separate file.


• scp://home1.cyberciti.biz/~/Videos/rhn_register.ogv - Use scp protocol and download file from my home server called home1.cyberciti.biz.

Curl: Download a file using username and password

The syntax is as follows to grab a file using ftp username and password:

curl ftp://username:passwd@ftp1.cyberciti.biz:21/path/to/backup.tar.gz

OR

 
curl -u UserName:PassWord ftp://ftp1.cyberciti.biz:21/backups/07/07/2012/mysql.blog.sql.tar.gz

Secure ftp user (ftp with ssl) can pass the –ftp-ssl option to curl command:

 
curl --ftp-ssl -u UserName:PassWord ftp://ftp1.cyberciti.biz:21/backups/07/07/2012/mysql.blog.sql.tar.gz

HTTP authentication

HTTP user can use the following syntax:

 
curl http://username:passwd@server1.cyberciti.biz/file/path/data.tar.gz

OR

 
curl -u Username:Password http://server1.cyberciti.biz/file/path/data.tar.gz

Linux Command for Download File