How to make ADB and Fastboot executable

“did you add the specific content in?”

do not understand what you mean by this? is therefore due to lack of data? not taken from here: “$ HOME / adb-fastboot / platform-tools”?
ok, so some kind of data should be visible there constantly?
thought it was something that appeared and disappeared with the connection of the cell phone.

should there be a file here?
path set by / etc / profile
can not find any such there

apparently needs more detailed instructions