split:tldr:514ba

The command "split -l ${10} ${filename}" is used to split a file into smaller parts (or chunks) with a specific number of lines per part.

Here's an explanation of each element in the command:

• "split": This is the main command that is used to split files. It divides a file into smaller parts based on specific criteria.
• "-l": This option is used to specify the number of lines to be included in each split part. In this case, "${10}" is a placeholder for a variable that represents the desired number of lines per part. The actual value will be substituted for "${10}" when the command is executed.
• "${filename}": This is another placeholder for a variable that represents the name of the file to be split. Similar to "${10}", the actual file name will be substituted for "${filename}" when the command is run.

For example, if the command is executed as "split -l 100 myfile.txt", it will split the file "myfile.txt" into smaller parts with 100 lines each. The resulting split parts will be named "xaa", "xab", "xac", and so on, depending on the size of the original file.