vim + cscope + exuberant-ctags first : checking vim configure confirm: vim --enable-cscope find | grep "\.c$\|\.h$" > cscope.files cscope -b ctag -L cscope.files ;ctag is exuberant-ctags Ctrl-\ c : find the callers of a routine. Ctrl-\ s : find the uses of a symbol Ctrl-[ Ctrl-[ s : vertical split find the uses of a symbol To update a cscope database without closing vim ":!cscope -b", then ":cs reset" more information http://www.fsl.cs.sunysb.edu/~rick/cscope.html