How to let firefox launch quickly

1 . load the related files into page caches

find /opt/firefox -type f -exec cat {} \; > /dev/null


2. find the related lib of executing firefox and create the output file of lib list.

ldd /opt/firefox/firefox-bin | grep -v "not found" | sed -e 's/.*=> //' -e 's/\s.*//' > ~/lib.txt

3. load the related lib into page caches

for i in `cat ~/lib.txt`; do (cat $i > /dev/null); done