Couldn't find executable

[ashva7]

Hi all,
at every rosrun, I am getting this error "[rosrun] Couldn't find executable named example1_b below /home/ashwini/dev/rosbook/chapter2_tutorials".
I am completely new to ros, and executing this as first code from the book. Please help.
Thanks in advance.

[jc5121]

Hi,I am new to ROS too.
You just forget " catkin_make ". Packages cannot be used before complied.
But there is an another issue - indigo problem #22 which isn't solved,you can find it in Issues.The "catkin_make" doesn't work well...
So I recommend you delete most of sub packages only 2 and 3 left. Then "catkin_make" works.You can begin your study temporary.