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4.3. Set TUTORIAL_DIR variable
4.3.1 IMAS @ ITER
shell> export TUTORIAL_DIR=$HOME/tutorials/2018-03-ITER
4.3.2 IMAS @ EUROfusion Gateway
shell> setenv TUTORIAL_DIR $HOME/tutorials/2018-03-ITER
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shell> export TUTORIAL_DIR=$HOME/tutorials/2018-03-ITER
shell> setenv TUTORIAL_DIR $HOME/tutorials/2018-03-ITER
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