From 37c53ddbe8adc390236d518a90f1590bd4a29dd8 Mon Sep 17 00:00:00 2001
From: Cyteen May <cyteen@ring-zero.co.uk>
Date: Thu, 20 Feb 2020 14:14:40 +0000
Subject: [PATCH] New. Commit before push.

---
 010_prelink.sh | 79 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100644 010_prelink.sh

diff --git a/010_prelink.sh b/010_prelink.sh
new file mode 100644
index 0000000..b3fad3b
--- /dev/null
+++ b/010_prelink.sh
@@ -0,0 +1,79 @@
+#!/usr/bin/bash
+
+# 5% speed boost on application load.
+
+## Revert everything:
+# prelink --all --undo
+
+apt-get install -y prelink
+
+## File list
+# /etc/cron.daily/prelink
+# /etc/default/prelink
+# /etc/prelink.conf
+# /usr/sbin/prelink
+# /usr/sbin/prelink.bin
+# /usr/share/doc/prelink/README.Debian
+# /usr/share/doc/prelink/TODO
+# /usr/share/doc/prelink/changelog.Debian.amd64.gz
+# /usr/share/doc/prelink/changelog.Debian.gz
+# /usr/share/doc/prelink/changelog.gz
+# /usr/share/doc/prelink/copyright
+# /usr/share/doc/prelink/prelink.pdf.gz
+# /usr/share/lintian/overrides/prelink
+# /usr/share/man/man8/prelink.8.gz
+# /usr/share/man/man8/prelink.bin.8.gz
+
+
+## /etc/default/prelink
+# The options explained:
+# -a 	"All": prelinks all the binaries
+# -m 	Conserve the virtual memory space. This is needed if you have a lot of libraries that need to be prelinked.
+# -R 	Random -- randomize the address ordering, this enhances security against buffer overflows.
+PRELINKING="unknown"
+PRELINK_OPTS="-amR"
+PRELINK_FULL_TIME_INTERVAL=14
+PRELINK_NONRPM_CHECK_INTERVAL=7
+
+sed -i 's,^\(PRELINKING=\).*,\1'${PRELINKING}',' /etc/default/prelink
+sed -i 's,^\(PRELINK_OPTS=\).*,\1'${PRELINK_OPTS}',' /etc/default/prelink
+sed -i 's,^\(PRELINK_FULL_TIME_INTERVAL=\).*,\1'${PRELINK_FULL_TIME_INTERVAL}',' /etc/default/prelink
+sed -i 's,^\(PRELINK_NONRPM_CHECK_INTERVAL=\).*,\1'${PRELINK_NONRPM_CHECK_INTERVAL}',' /etc/default/prelink
+
+## /etc/prefix.conf
+# `-l ', the directory hierarchy will be walked as long as filesystem boundaries are not crossed.
+# `-h ', symbolic links in a directory hierarchy are followed.
+# `-b ' prefix will be blacklisted.
+cat > /etc/prelink.conf <<'EOF'
+# This config file contains a list of directories both with binaries
+# and libraries prelink should consider by default.
+# If a directory name is prefixed with `-l ', the directory hierarchy
+# will be walked as long as filesystem boundaries are not crossed.
+# If a directory name is prefixed with `-h ', symbolic links in a
+# directory hierarchy are followed.
+# Directories or files with `-b ' prefix will be blacklisted.
+-b *.la
+-b *.png
+-b *.py
+-b *.pl
+-b *.pm
+-b *.sh
+-b *.xml
+-b *.xslt
+-b *.a
+-b *.js
+-b /lib/modules
+-b /usr/lib/locale
+-l /usr/local/sbin
+-l /sbin
+-l /usr/sbin
+-l /usr/local/bin
+-l /bin
+-l /usr/bin
+-l /usr/X11R6/bin
+-l /usr/games
+-l /usr/local/lib
+-l /lib
+-l /usr/lib
+-l /usr/X11R6/lib
+EOF