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Commit 2b4b7741 authored by Baltasar Ruechardt's avatar Baltasar Ruechardt
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Add link to bash tutorial

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......@@ -24,7 +24,7 @@ How you interact with the computer
Without experience you interact probably via a graphical user interface (mouse, clicking on folders, etc.). Don't mind, this is completely fine! But to work with the cluster you will have to learn to work closer to the chip.
You can directly interact with it via *bash*. This is a shell in which you give commands directly to the chip. For example you can move in the data storage system, tell the chip to run a program, etc. [Basically everything.].
You can directly interact with it via *bash*. This is a shell in which you give commands directly to the chip. For example you can move in the data storage system, tell the chip to run a program, etc. [Basically everything.]. A starting point would be [this page](https://www.grymoire.com/Unix/Sh.html) or you take some days and read an introduction to bash.
For example you start bash and are in your home directory (A folder in the file system that is reserved for you). You can use `cd` to *c*hange *d*irectory to move inside the file system, `ls` to list the files in the folder you are in, `rm` to remove files and many more. Usually you find out how to do something by googleing what you want to do and entering bash, e.g. `copy files bash` will give you a hint h ow to copy files from the bash shell. `cd`, `ls` and `rm` are programs that have been written by others and are there by default. If you type a command in bash, the computer knows where to search for the instructions from something that is called PATH-variable. The PATH variable contains locations on the data system where the chip looks for the instructions. You can display it by typing `echo $PATH`. If you run a program that you think should be there but it isn't, you can know what might be the problem: It was not in the PATH, so the chip couldn't find it.
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