Bob accidentally created the subdirectory \bobsdir in his home directory. He tried to remove the subdirectory with the command rmdir \bobsfile only to receive the error: "No such file or directory." W

Single quotes prevent tilde expansion entirely, so ~bob is treated as a literal string rather than the home directory path, producing a path that does not exist.

Double quotes also suppress tilde expansion in bash, so ~bob remains unexpanded and the path cannot resolve to the correct directory.

Tilde expands correctly outside quotes, but single-quoting only 'bobsdir' removes the backslash from the name, so the resolved target is bobsdir rather than \bobsdir.

In an unquoted context, a single backslash before 'b' acts as an escape character, causing the shell to interpret \b as just 'b', so the path resolves to bobsdir without a leading backslash.

In an unquoted shell context, tilde (~bob) expands to the home directory path. The double backslash (\\) is interpreted by the shell as a single escaped literal backslash, producing the resolved path /home/bob/\bobsdir, which matches the actual directory name created with the backslash prefix.