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Prepare your environment

Paste this into your shell to permanently setup your PATH, LD_LIBRARY_PATH, and QTDIR environment variables. If you've already done one of those, you may delete that particular line. intrepid and above do NOT require a QTDIR setting at all.

touch $BASHRC

cat >> $BASHRC << Emergent

# Check the following line to be sure it has the Qt version you're actually installing!
export QTDIR=/usr/local/Trolltech/Qt-4.4.1
export PATH=\$PATH:/usr/local/bin
export LD_LIBRARY_PATH=\$LD_LIBRARY_PATH:/usr/local/lib:\$QTDIR/lib

source $BASHRC
tail -n6 $BASHRC # Print what we just appended to this file