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title	Solution 1

pshell

login

sean

????

delegate

exit

pshell whoami

Exercise - script a task to download a file in your directory.

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title	Solution 2

Create a plain text file script1.txt containing:

Code Block
cd Demo/sean get testfile1

pshell -i script1.txt

Exercise - script a task that attempts to perform something that will fail (eg remove a directory that doesn't exist) and correctly report that the script encountered an error.

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title	Solution 3

Run the following script if you have bash ... sorry Windows users (without WSL.)

Code Block
#!/bin/bash pshell "rmdir /idontexist" if [ $? == 0 ]; then echo "All good - proceed further!" else echo "Operation failed!" fi

Which produces:

Code Block
Error from server: The namespace '/idontexist' does not exist or is not accessible Operation failed!

This would typically be a job script on (eg) Pawsey HPC - where you would be doing all such work in a Linux environment.

The idea is that if something in your data setup pipeline fails - don't waste any valuable cpu time on it.

Exercise - modify the script from adapt the previous exercise to perform something an upload that will succeed (eg upload a file from your local desktop) and correctly report that the operation was successful.

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title	Solution 5

You will need two scripts here, one to run pshell (which would be submitted as a job) and another to supply multiple commands to pshell.

The second script is needed as, by default, pshell will try to upload into your current working directory (/projects) which you do not have permission to alter.

First script, call it: upload.txt

Code Block
cd /projects/Demo/sean put testfile

Then we can run this:

Code Block
#!/bin/bash pshell

"put testfile"

-i upload.txt

if [ $? == 0 ]; then
   echo "All good - proceed further!"
else
   echo "Operation failed!"
fi

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