Install Curl on Centos/RHEL/Fedora and Ubuntu/Debian
Curl is free and open source software and is used in command lines or scripts to transfer data.It is command line tool and library fot transferring data with urls.
It is a command line tool that allows you to transfer data from or to a remote server using the following supported protocols: IMAP, IMAPS, POP, POP3, POP3S, DICT, FILE HTTP, HTTPS, SMB, SMBS, SMTP, SMTPS, FTP, FTPS, RTSP, RMTP,TELNET and TFTP.
generally curl comes with preinstalled on latest distros.If it is not installed on your system then you can run following command.
[root@centos ~]# yum install curl
you can check what pakages are installed with below command
[root@centos ~]# rpm -qa | grep curl curl-7.61.1-11.el8.x86_64 libcurl-7.61.1-11.el8.x86_64
If you want to install latest version then you can download and compile it.
[root@centos ~]# wget https://curl.haxx.se/download/curl-7.69.1.tar.gz [root@centos ~]# tar -xvzf curl-7.69.1.tar.gz [root@centos ~]# cd curl-7.69.1/ [root@centos curl-7.69.1]# ./configure [root@centos curl-7.69.1]# make [root@centos curl-7.69.1]# make install [root@centos curl-7.69.1]# curl --version
Curl package is included in the default Ubuntu 18.04 repositories.If it is not there then you can install with following commands.
apt-get update apt-get install curl
verify curl is installed and check its version like below
dpkg -l curl
zypper install curl
pacman -Sy curl
usage of curl
once curl is installed you can use it as follows to see the headers
Below commnad will print the source-code of the google.com homepage in your terminal window
To download a file with curl you can use either the -o or -O options.
If you use lowercase -o then result will be saved in the filename provided in the command line.If it is uppercase -O option that time filename in the URL will be taken and it will be used as the filename to store the result.
curl -o curl.tar.gz https://curl.haxx.se/download/curl-7.69.1.tar.gz
you can check more information using below commands.
[root@centos ~]# man curl [root@centos ~]# curl --help