xsel:tldr:d4e95
The given command is xsel -ob > ${filename}. Here is its explanation:
xsel is a command-line utility for manipulating the X selection (clipboard) in X Window System.
-ob is an option for xsel which stands for "output clipboard". It tells xsel to output the contents of the selection to the standard output.
> is a shell operator known as "output redirection". It redirects the standard output to a file.
${filename} is a placeholder for the name of the file where the output will be redirected. It is usually replaced with an actual file name.
In summary, the command xsel -ob > ${filename} takes the contents of the X selection (clipboard) and saves it to a file specified by the value of ${filename}. The >${filename} part ensures that the output of the command is directed to the file instead of being displayed on the terminal.