build krusader

1. sudo apt-get build-dep krusader
2. git clone http://anongit.kde.org/krusader
3. mkdir MyKrusader
4. cd MyKrusader
5. cmake .. -DCMAKE_INSTALL_PREFIX=/usr/local -DCMAKE_C_FLAGS="-O2 -fPIC" -DCMAKE_CXX_FLAGS="-O2 -fPIC" 
6. (NB, step 5 has .. )
7. make
8. sudo make install

wake on lan WOL windows 10

In control panel, uncheck the  快速啟動 option

setup HP-LaserJet PRo M15W

1. Download latest driver from:  https://sourceforge.net/projects/hplip/files/hplip/
   e.g. hplip-3.19.1.run (as of 20190218)
2. sudo hplip-3.19.1.run
   
3.  Done!

Thunderbird performance tweak

cf: https://rainbow.chard.org/2013/02/19/thunderbird-high-cpu/