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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 https://www2.warwick.ac.uk/research/rtp/sc/rse/training/linuxdesktop#misc 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` ?

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

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