On Tue 09 Feb 2016 at 14:50:40 -0700, Bob Holtzman wrote: > On Mon, Feb 08, 2016 at 05:52:27PM -0600, John Hasler wrote: > > Bob Holtzman writes: > > > As root journalctl produces a long list, tail journalctl produces > > > > > "tail: cannot open ‘journalctl’ for reading: No such file or directory". > > > > > Now I'm really confused. Any explanation? > > > > journalctl is a program for querying the systemd journal. tail is a > > tool to output the last part of a file. > > > > man journalctl > > > > man tail > > Of course. What's your point?
The tail *command* operates *on files*. It opens the file and displays the last 10 lines of it. (I think we both agree on that because we have read the same manual). tail journalctl attempts to open a file with the name journalctl in your home directory. (As the output tells you - it does not exist). If the file is not in your home directory you have to inform tail where it is by giving the full path. Like so: tail /bin/journalctl
