Using the “Advanced Package Tool” aka apt to install utilities is one of the easiest ways to install software in Linux/Unix.

Here is an example of searching for packages.

Example:

[email protected]:~/Downloads$ apt-cache search libcurl3  
libcurl3 - Multi-protocol file transfer library (OpenSSL)  
libcurl3-dbg - libcurl compiled with debug symbols  
libcurl3-gnutls - Multi-protocol file transfer library (GnuTLS)  
libcurl3-nss - Multi-protocol file transfer library (NSS)  
libcurl4-gnutls-dev - Development files and documentation for libcurl(GnuTLS)  
libcurl4-nss-dev - Development files and documentation for libcurl (NSS)  
libcurl4-openssl-dev - Development files and documentation for libcurl (OpenSSL)