1 Effective date searches are available only for US area codes. 2  Our sources for non-US NPA-NXX data do not provide this information. 3  If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero. Effective date searches are available only for US area codes. 2  Our sources for non-US NPA-NXX data do not provide this information. 3  If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.
If you press Y (for yes) in response to this message, the batch program ends and control returns to the operating system. Therefore, you can insert the pause command before a section of the batch file you may not want to process. While pause suspends processing of the batch program, you can press CTRL+C and then Y to stop the batch program.
Linux comes with different set of commands to check memory usage. The free command displays the total amount of free and used physical and swap memory in the system, as well as the buffers used by the kernel.The vmstat command reports information about processes, memory, paging, block IO, traps, and cpu activity.top command. The program atop is an interactive monitor to view the load on a Linux system. This program can display the amount of used and free memory. It is similar to top command but comes with additional advanced options. By default, the atop command is not installed on most Linux distributions.