x_x:tldr:241d8
This command seems to be using a shell script notation. Here's the breakdown of each component:
-
x_xis likely the name of the script or program being executed. -
-his a flag or option being passed to thex_xcommand. The meaning of-hcan vary depending on the specific command, but commonly it stands for "help" and is used to display information about how to use the command. -
${0}represents a parameter being passed to thex_xcommand. In shell scripting,${0}typically refers to the name of the script itself, so this command is passing the name of the script as an argument tox_x. -
${select}represents another parameter being passed to thex_xcommand. The value of${select}would depend on how it has been defined or assigned in the script (not shown in the given command).
Overall, this command is invoking the x_x command with the -h option, and also passing the name of the script ${0} and the value of ${select} as parameters.