whence:tldr:988af
The command "whence" is used in Unix-like systems (e.g. Linux) to find the location of a specific command or executable file in the system's PATH environment variable.
The -c flag is an option that enables compatibility mode. It modifies the behavior of the "whence" command to mimic the equivalent functionality of the "which" command found in other Unix-like systems.
"${command}" is a placeholder representing the name of the command whose location you want to find. By enclosing it in double quotes "${}", it ensures that any special characters or spaces within the command's name are properly interpreted.
In summary, when you run the command "whence -c "${command}"" in a Unix-like system, it will search for and output the location of the specified command in the system's PATH.