How to find where a library is installed? I have installed libgoogle-perftools-dev via software center in Ubuntu 12.04. As suggested by < I want to add to my cpp file: #include <gperftools/profiler.h> But the compiler says gperftools/profiler.h: No such file or directory I tried to find where it is: $ locate -i gperftools no return, and $ locate -i "profiler.h" returns /usr/include/c++/4.6/profile/impl/profiler.h /usr/src/linux-headers-3.2.0-23-generic-pae/include/config/function/profiler.h which I am not sure if are for `gperftools`. So I wonder how to find * where libgoogle-perftools-dev is installed? * where gperftools/profiler.h is located?

Probably the issue with the `locate` command is that the database has not yet been updated to reflect the newly-installed package files. You could force an update (`sudo updatedb`) or use the `find` command instead, but probably the easiest solution on systems like Ubuntu that use the `dpkg` package management tools is to list the package contents


dpkg -L libgoogle-perftools-dev


or to check for the `profiler.h` file location specifically


dpkg -L libgoogle-perftools-dev | grep 'profiler.h'