$ apt-cache search pcre
libpcre3 - Perl 5 Compatible Regular Expression Library - runtime files
libpcre3-dev - Perl 5 Compatible Regular Expression Library - development files
libpcrecpp0 - Perl 5 Compatible Regular Expression Library - C++ runtime files
pcregrep - grep utility that uses perl 5 compatible regexes.
pgrep - Dummy package for transition to pcregrep