curl command HowTo - Linux / Unix Q & A from nixCraft

curl hide progress bar output on Linux/Unix shell scripts

last updated August 27, 2018 in BASH Shell, Linux, UNIX

I am a new Ubuntu Linux user. I am writing a shell script and using the curl command to grab URL output using curl https://example.com/data/api/$key/hash.html. However, the curl command is outputting complete progress information that my script does not need it. How can I get curl command not to show the progress bar output? How can I hide curl command output? Is there is a simple way for silencing curl’s progress output on an Ubuntu Linux desktop?

Curl Set User Agent Command on Linux or Unix

last updated May 8, 2018 in Linux, UNIX

I need to set the user agent header for curl command. How can I set or change user agent with curl command on Linux or Unix like system?

How to redirect Nginx non-www to www domain over SSL

last updated April 24, 2018 in Linux, Nginx, Troubleshooting, UNIX

I am getting an error that reads, “Your connection is not secure” when trying to redirect https://theos.in/ to https://www.theos.in/ domain using HTTP 301. How do I redirect Nginx non-www to www domain over SSL?

How to install curl command on Ubuntu Linux

last updated July 29, 2019 in Linux, Package Management, Ubuntu Linux

I am a new Ubuntu Linux user. I switched from Apple MacOS/Macbook and I trying to run the curl command from a shell script but getting the following error:
bash: curl: command not found
How do I fix this on a Ubuntu Linux version 17.10/16.04 LTS?

How to use the cURL command to do a POST data to fields on Linux or Unix

last updated May 28, 2017 in BASH Shell, CentOS, Debian / Ubuntu, FreeBSD, Linux, RedHat and Friends, Suse, UNIX

How do I use the cURL command on Linux or Unix to post data i.e. upload something on Linux or Unix? How do I make a POST request with the cURL Linux command-line to upload file?