e2freefrag:tldr:d8149
The command you provided, "e2freefrag -c ${chunk_size_in_kb} ${-dev-sdXN}", is not a standard Linux command. It appears to be a custom command or a command specific to a particular software or tool.
However, based on the syntax, let's break it down to understand its possible components:
-
"e2freefrag": This could be the name of a custom command or the executable file that is being executed. It seems to be related to analyzing free space fragmentation on a file system.
-
"-c ${chunk_size_in_kb}": The "-c" option is likely used to specify a certain chunk size in kilobytes (KB). "${chunk_size_in_kb}" is a placeholder that should be replaced with the actual chunk size that you want to use. For example, if you want to set the chunk size to 4KB, you would replace "${chunk_size_in_kb}" with "4".
-
"${-dev-sdXN}": This part is a bit unclear without more context. It appears to be a placeholder for a device identifier or path. "${-dev-sdXN}" suggests that it might represent a specific block device on your system, possibly a disk or a partition. The "sdXN" part may need to be replaced with the correct device identifier, such as "sda1" or "nvme0n1p3", depending on your system's configuration.
Ideally, to fully understand the purpose and functionality of this command, you would need to refer to its documentation or consult the source or tool providing it.