A shell debug application avoids loss of debug log data for configured commands during the operation of an operating system. A shell debug application executes a command shell script, by a computer, to control an amount of code path debug data captured in memory buffers and saved. The shell debug application obtains, by the computer, a configuration file that includes at least one command. The shell debug application runs the command shell script in the configuration file in response to detection of at least one script associated with the at least one command in the configuration file.