First of all, I'm sorry if it seems like this question has been asked a million times before, I tried to make the title hint at the fact that my schools filesystem is different from anything I've used before, and the usual results that you will find on google don't work for me.
Let me start off by saying that my school just upgraded their computers from El Capitan to High Sierra, and before the update, all it took to speed up the terminal was a simple one liner to delete the logs:
find ~/Library/Logs/DiagnosticReports -mindepth 1 -delete
However, this solution no longer seems to speed up my terminal, and it's getting progressively slower on startup, as well as having a bit of lag when using ls and other simple shell commands... I have gone to the IT staff at the school about this, but unfortunately they have bigger issues right now than a slow terminal and they said they would get around to it when they have time.
Thing is, I don't know how long that's going to be, so I would like to see if I can solve this without their help. After a bunch of google searches, all I was able to turn up was stuff that either didn't help (disabling certain features to speed it up), to delete log files that don't exist on this machine, or to delete logfiles in an area that requires a sudo password which I don't have.
Is there any way I can locate the source of the slowdown? If I can at least find the source, I can bring my findings to the IT staff and they will happily help me out if the solution requires sudo... but for the time being they are too overworked to investigate the issue.
Our school uses iMacs running High Sierra, on an NFS filesystem. I'm pretty sure the computers are virtual machines as well.