Final answer:
The EC column in a queue list usually refers to 'Error Code' or 'Exit Code'. The number 2 in this column often means misuse of shell builtins according to Bash scripting, but could represent a different error or status in the context of specific software.
Step-by-step explanation:
In the context of a queue list, the EC column typically stands for Error Code or Exit Code. When you see the number 2 in this column, it usually indicates a specific type of error or status. In general computing, an exit code of 2 often means there was misuse of shell builtins, according to the Bash scripting standards. It could also be a specific error message or status code depending on the application or the software that is generating the queue list.
Understanding what the number 2 specifically means in this context would require additional information regarding the software or application being used. If it's a program that you coded or a piece of software that you are running, you would look to the documentation or the source code to interpret the meaning of the error code. If it's a part of a system you're not familiar with, you might need to consult a manual or a help file associated with that software.