How to Install Cargo on a Rhel Linux Server

How to uninstall Rust that was installed via rustup?

To uninstall rustc, rustup and cargo from my Ubuntu 16.04 installation, I did:

rustup self uninstall

and it worked.

Tomcat: How to find out running Tomcat version?

if you can upload a JSP file you may print out some info like in this example: bestdesigns.co.in/blog/check-jsp-tomcat-version

Save this code into a file called tomcat_version.jsp:

    Tomcat Version : <%= application.getServerInfo() %><br>    
    Servlet Specification Version : 
<%= application.getMajorVersion() %>.<%= application.getMinorVersion() %> <br>    
    JSP version :
<%=JspFactory.getDefaultFactory().getEngineInfo().getSpecificationVersion() %><br>

When you access, http://example.com/tomcat_version.jsp, the output should look similar to:

Tomcat Version : Apache Tomcat/5.5.25
Servlet Specification Version : 2.4
JSP version: 2.0

Could not write to .bash_profile when installing Rust on macOS Sierra

Give a try using this not using sudo:

curl https://sh.rustup.rs -sSf | sh -s -- --help

If that works then probably you could try:

curl https://sh.rustup.rs -sSf | sh -s -- --no-modify-path 

If the command with the --no-modify-path option works, you'll have to manually update .bash_profile to include it in your path:

source ~/.cargo/env

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