I'm using an Ubuntu 17.04 machine.

I installed Anaconda a while ago and it worked fine. The next day, I'd issue a `conda` command at the terminal and it would say the command was not recognized. I figured I must have done something wrong, uninstalled, reinstalled, and it worked fine again. The whole cycle repeated about a month ago: Issue the command, am told it's not recognized, reinstall, now it works. With some confusion and futzing I came to the possibly mistaken conclusion that I had to be in a certain directory to get the command to work--I guess maybe there was some PATH issue that I wasn't understanding. But I figured, fine, if I run into this again I'll just navigate to the appropriate folder. Now today, I issue a conda command, even in the folder where it usually works, and it doesn't work. 

So I've again deleted all of my Anaconda folders and files, i.e. 

```
sudo rm -rf /home/usrnm/anaconda3

```

and I'm about to reinstall but I'm getting tired of the constant need to reinstall. Can anyone suggest what might be going wrong? I've found that when I echo `sys.path` I get 

```
.path

```

and when I echo `PATH` I get 

```
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games

```

[Edit: A possibly more specific question is, is there somewhere in particular I should be saving the installer that I download from their website? I always just download it to `~/Downloads` and leave it there, trusting that the installer will create all of the necessary files and folders for smooth running elsewhere.]