Readme apache/incubator-pagespeed-ngx#1760
us@sr:# apt-get install build-essential zlib1g-dev libpcre3 libpcre3-dev unzip uuid-dev libssl-dev
us@sr:# apt-mark hold nginx
PREVENT CHANGES FOR A PACKAGE
hold
hold is used to mark a package as held back, which will prevent the package from being
automatically installed, upgraded or removed.
unhold
unhold is used to cancel a previously set hold on a package to allow all actions
again.
showhold
showhold is used to print a list of packages on hold in the same way as for the other
show commands.