whereis:tldr:b7e55

The command whereis is a Linux command that is used to locate the binary, source, and manual page files for a given command or program.

The specific command you provided, whereis -b -B ${-usr-bin-} -f ${gcc}, has the following options and arguments:

• -b: This option is used to search for binary (executable) files only.
• -B ${-usr-bin-}: This option specifies the base of the paths to search for binary files. In this case, it is set to ${-usr-bin-}, which seems to be a placeholder value. The actual value should be substituted.
• -f ${gcc}: This option searches for manual page (documentation) files related to the given command or program. In this case, it is searching for the manual page for the gcc command. Again, ${gcc} appears to be a placeholder value to be substituted with the actual value.

To summarize, this command is used to locate the binary (executable) file for a command, as well as its associated manual page file, specifically for the gcc command. The exact values for ${-usr-bin-} and ${gcc} need to be substituted with actual values for the command to work correctly.