/etc/default/prelink is in prelink 0.0.20090925-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 | # Set this to no to disable prelinking altogether
# or to yes to enable it. Any other value will
# make prelink do nothing.
# (if you change this from yes to no prelink -ua
# will be run next night to undo prelinking)
PRELINKING=unknown
# Options to pass to prelink
# -m Try to conserve virtual memory by allowing overlapping
# assigned virtual memory slots for libraries which
# never appear together in one binary
# -R Randomize virtual memory slot assignments for libraries.
# This makes it slightly harder for various buffer overflow
# attacks, since library addresses will be different on each
# host using -R.
PRELINK_OPTS=-mR
# How often should full prelink be run (in days)
# Normally, prelink will be run in quick mode, every
# $PRELINK_FULL_TIME_INTERVAL days it will be run
# in normal mode. Comment this line out if prelink
# should be run in normal mode always.
PRELINK_FULL_TIME_INTERVAL=14
# How often should prelink run (in days) even if
# no packages have been upgraded via dpkg.
# If $PRELINK_FULL_TIME_INTERVAL days have not elapsed
# yet since last normal mode prelinking, last
# quick mode prelinking happened less than
# $PRELINK_NONRPM_CHECK_INTERVAL days ago
# and no packages have been upgraded by rpm
# since last quick mode prelinking, prelink
# will not do anything.
# Change to
# PRELINK_NONRPM_CHECK_INTERVAL=0
# if you want to disable the dpkg database timestamp
# check (especially if you don't use dpkg
# exclusively to upgrade system libraries and/or binaries).
PRELINK_NONRPM_CHECK_INTERVAL=7
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