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mission_ideas.md

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Some missions ideas

  • using ls -l and some other common options

  • ls * vs ls -d *

  • using less / more to paginate the output of a command

  • meaning of the PATH variable

  • symbolic links ("Make a secret passage from one room to another.")

  • using sort / uniq

  • file command

  • diff and/or cmp

  • search through the history with C-r

  • history of commands

  • more missions using shell patterns [...] and [^...] (or [!...] as specified by POSIX, but this interacts with bash' history expansion)

  • mission using */* patterns to explain that / are not captured by wildcards

  • simple regular expressions and grep

  • create empty files with touch, update modification date

  • dealing with strange files: spaces (quoting / escaping), starting with a dash (using --), etc.

  • scripting: for loops on files

  • yes command (not POSIX) and pipes

  • pushd / popd

  • comm to compare before / after file

  • paste (restore a torn treasure map)

  • join

  • wget / curl

  • tar / zip

    • Idea: receive/send a package (archive = packaging).

  • fuser / lsof

  • print prime numbers less than N with a combination of seq / factor / grep / cut

  • only activate completion once the first appropriate mission has been completed (put bind 'set disable-completion' on in the first mission's gshrc, and bind ... of in some mission' treasuse.sh)

  • "summary missions" to practice what has been learnt at the end of the missions/basic mission group. We could ask the player o tidy up the pantry, initially filled with a big mess of files (fruits, cheese, meat, wine, trash, ...) and the player would have to organise everything into a specified directory structure: fruits in "barrels", cheese on "shelves", get rid of trash, ...

  • manage an inventory (or the Chest) with aliases:

    • alias inventory='ls ~/Forest/Hut/Chest | nl to show the inventory,
    • alias pick='mv -t ~/Forest/Hut/Chest to pick an item (NOTE: it probably requires GNU's mv with option -t)
    • alias drop='...' to drop an item at the current location (NOTE: that's probably better to use a function for that, no?)