Thanks for your help!

I have now created a password for frog, after doing ctl-c, using sudo passwd frog
Then I changed to the frog user, using sudo su frog
I went to the directory with config-steemd.bash, using cd ~/bin
I did ls, and I see the file config-steemd.bash in green. If I run it, it says "command not found" both with and without sudo as a prefix. config.ini is in red and the other 3 are in green, when I do ls.

frog@xxx:~/bin$ ls
config.ini config-steemd.bash recompile-steem.bash replay-steemd.bash
frog@xxx:~/bin$ sudo config-steemd.bash miner
sudo: config-steemd.bash: command not found
frog@xxx:~/bin$ config-steemd.bash miner
config-steemd.bash: command not found

Not sure how to proceed. Seems strange to get "command not found" when it is obviously there, but then again, it may be something obvious as I am very rusty at linux!

Thanks for any light you may be able to shine on this!