![]() Not that the GUI is not efficient, but there are things that are simply faster to do with the keyboard. Join the nixCraft community via RSS Feed, Email Newsletter or follow on Twitter.As a Linux user, I can't help but spend most of my time on the command line. He wrote more than 7k+ posts and helped numerous readers to master IT topics. Vivek Gite is the founder of nixCraft, the oldest running blog about Linux and open source. ![]() Hence visit this help page online or read it offline using the man command or help command: Like most Linux or Unix CLI utilities, you can learn much more about curl command. $ curl -silent -output filename Conclusion Want to make hide progress meter or error messages? Try passing the -s or -slient option to turn on curl quiet mode: ![]() One can upload multiple files as follows: $ curl -F For example, you can upload a file at ~/Pictures/test.png to the server which processes file input with form parameter named img_file, run: The syntax is as follows to upload files: To avoid such problems pass the -A option that allows you to set the user agent. ![]() Some web application firewall will block the default curl user agent while downloading files. $ curl -limit-rate 3m Setting up user agent Appending ‘k’ or ‘K’ will count the number as kilobytes, ‘m’ or ‘M’ makes it megabytes, while ‘g’ or ‘G’ makes it gigabytes. The given speed is measured in bytes/second, unless a suffix is appended. This feature is handy if you have a limited Internet bandwidth and you would like your transfer not to use your entire bandwidth. You can specify the maximum transfer rate you want the curl to use for both downloads and uploads files. $ curl -k Rate limiting download/upload speed Therefore, pass pass the -k option as follows: If the remote server has a self-signed certificate you may want to skip the SSL checks. One can save it sticker_book.pdf directly without specifying the -o or -output option by passing the -O (capital For example, sticker_book.pdf is a file name for remote URL. write output to a local file named like the remote file we get. $ curl -C -output bigfilename How to get a single file without giving output name # Restarting an interrupted download is important task too # It then uses the given output/input files to figure that out: Pass the -C - to tell curl to automatically find out where/how to resume the transfer. Current Speed : Average transfer speed over the last 5 seconds (the first 5 seconds of a transfer is based on less time, of course) in number of bytes per second.Time Left : Expected time left to completion, in HH:MM:SS.Time Spent : Time passed since the start of the transfer in HH:MM:SS.Time Total : Expected time to complete the operation, in HH:MM:SS notation for hours, minutes and seconds.Speed Upload : Average transfer speed of the entire upload so far, in number of bytes per second.Average Dload : Average transfer speed of the entire download so far, in number of bytes per second.% Xferd : Currently uploaded number of bytes.% Received : Currently downloaded number of bytes.% Total : Total size of the whole expected transfer (if known).The outputs indicates useful information such as: If you do not provide the output file name curl will display it to the screen. The -o or -output option allows you to give the downloaded file a different name. Let us try to download a file from and save it as output.pdf Protocols: dict file ftp ftps gopher gophers http https imap imaps mqtt pop3 pop3s rtsp smb smbs smtp smtps telnet tftpįeatures: alt-svc AsynchDNS brotli HSTS HTTP2 HTTPS-proxy IPv6 Largefile libz NTLM NTLM_WB SSL TLS-SRP UnixSockets Downloading file with curl $ sudo zypper install curl Verify installation by displaying curl version # OpenSUSE Linux users try zypper command # # Fedora/CentOS/RHEL users try dnf command/ yum command # # Debian/Ubuntu Linux use the apt command/ apt-get command # Installing curl on Linux or Unixīy default curl is installed on many Linux distros and Unix-like systems. Let us see some examples and usage about the curl to download and upload file on Linux or Unix-like systems. Follow a 301-redirected file while downloading file with curl, run: $ curl -L -o file.tgz.You can set the output file name while downloading file with the curl, execute: $ curl -o file.pdf.Get file using ftp or sftp protocol: $ curl ftp://ftp-your-domain-name/. ![]()
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