Ubuntu 12.04 error command not found

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http://askubuntu.com – I have installed Ubuntu 12.04 Desktop LTS on three Intel systems. All the three PCs are using the same kernel version (3.2.0-29-generic-pae). But I have a problem that when I compile and build my executable on one PC, it does not run on the other PCs and displays an error message "command not found". However, if the same code is rebuilt on the other PC, it runs successfully. How can I make my executable built on one PC to run on another PC with the same Ubuntu 12.04 Linux kernel? (HowTos)