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SCRTP Desktop Quiz

This brief quiz is designed to help you see how well you've understood this introduction. For some questions you may wish to consult or try out the examples on an SCRTP machine. Scores are not kept.
What identifies hidden files, and how would you show them with ls?

The following is output from `ls -lh`. How big is the file b.txt?
rw-rw-r- 1 username username 2.0K Oct 13 11:57 a.txt
rw-rw-r- 1 username username 4.0K Oct 13 11:57 b.txt
rw-rw-r- 1 username username 512 Oct 13 11:57 c.txt

I ran the command `rm tmp.txt`. How do I recover the file tmp.txt?

I have the following files in my current working directory:
tmp0.txt tmp1.txt tmp10.txt
tmpa.txt temp.txt
Which of the following would be output by `ls tmp[0-9].txt` ?

Keyboard users: tab to the item you want to relocate, press enter to select, use left and right arrows to pick category, and up and down arrows to choose position, then press enter again to confirm.

  • Compressing files (zip, tar)
  • File copies (e.g. scp)
  • Small compute jobs (< 64 processors)
  • Data analysis and visualisation
  • Large compute jobs (64 – about 512 processors)
  • Compiling code
  • Plotting data (small tasks)
  • Creating and editing scripts and code
  • Very large compute jobs (> about 512 processors)

  • echo MYVAR
  • echo $MYVAR
  • echo ’$MYVAR’
  • $MYVAR
  • value

How would one load Python 3 from the module system, in this case Python 3.5.4? (Note that on machines like Orac you may need to have loaded some other modules first).
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