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–T: This allows any trap in DEBUG and RETURN to be inherited by shell functions or commands.

–a: This option enables the user to give export attribute to each and every variable or function allowing them to be marked for export for subsequent commands to the environment.–b: Any terminated background jobs is immediately reported using this option in a shell script.–e: This option enables any pipeline, consisting of single simple command or a list or a compound command has returned a non-zero status.–f: This option allows to disable any filename expansion.–h: This is an option which is enabled by default where the commands are located and remembered as they are looked up for execution.

–k: Using this options allows all assignment statements to be placed in environment.In case of running of any process, they are executed in separate groups and with this option one can control the jobs by having the ability to pause for a certain time and restart again. –m: Using this, one can enable job control.Here in this option the commands are not executed, but only read. –n: This option is mainly used for checking the syntax before actually executing the commands.It reduces the chances the attack by giving an “under-privilege” access so that any action can’t trick the linux to perform some erroneous task. Privileged mode is a way of increasing the security in way by restricting any potentially dangerous actions from execution. –p: This option enables the privilege mode.In case of a script to break, this option is highly used. This is not that widely used as scripts are written to execute multiple commands and having this option kills the motive of having a shell script. –t: In highly unlikely cases of reading only and single command and exiting post that this command is used.The error message will be presented on the screen before exiting of the shell. –u: In bash when there is requirement of parameter expansion, this option is used for treating any unset parameter except the and “*” as an error.This is not that widely used in scripting as it is not that straight forward to trace back to the root cause of a bug as –x is. –v: This is again an option used for debugging purpose, where it enables the script to read lines as they execute.It is one of the most useful features for debugging purpose. –x: Using this option, one can print the trace for simple commands, for commands, case commands, select commands, for commands in case of arithmetic along with the argument structure it possess.Lets start with the order in which the syntax is written starting with x: In subsequent paragraphs we would look at each of these options which are available with set command in great detail and also look into why those options are used and under what circumstances one should use them. Set Īll the options in “–” and “-” includes various flexibility to the set command to perform all kinds of jobs it is assigned in day to day work.

Raspian script debugger software#

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