pushd popd dirs command tutorial

For Zsh:  
    1. Basic Usage
       dirs -v # display numbered list of directory stack
       pushd -  # push and back to last directory  == pushd -0 
       pushd -N # push and back to last Nth directory 
       pushd +N # push and back to Nth diretory of dirs right(0) to left 
       popd -N # pop Nth directory of dirs left to right 
       popd +N # pop Nth directory of dirs right to left