hard to search with double quotes and single quotes. even if I ctrl+alt+fn1 out to a full screen terminal, I can´t get proper quote-marks, thus cannot write proper command lines.

Find whatever symbol/character you need somewhere else -- KCharSelect, web page, email, text file, etc.  Then copy/paste where you need it.  A bit cumbersome, but gets the job done in a pinch.

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PGP key: http://homestead-products.com/pubkey.htm