In order to be able to use these scripts a few external dependencies have to be met. Most of them should already be installed on any Linux distribution.

Order of the list is from what you probably have to install yourself to what probably is installed anyway:

start-stop-daemon

as the name suggests it is used to start the game as a daemon. Will be compiled during installation of scripts later on.

​XMLStarlet

used to manipulate serverconfig.xml

expect

used to interact with SteamCMD

libstdc++

as 32 bit library, at least GLIBC 2.15

lib32gcc1

32 bit libGCC, required for SteamCMD

python3-pygments ^(Optional)

Allows printing the instance configurations with XML highlighting

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Everything below should be installed already:

wget

downloads SteamCMD

rsync

create incremental backups of game data

pkill

stops the server log monitoring

netstat

showing the open ports

Bash

the whole thing heavily relies on features of Bash

Init system

for automatic start of 7dtd on server boot (Script designed for SysVInit, it should also work with systemd)

cut, tr, tail, stdbuf

stream manipulation

grep, sed, dd, date, mkdir, touch, nc

tools really every Linux distro should ship anyway ;)

Fedora

Most of the required stuff is included in a basic Fedora setup. You should only have to explicitly install XMLStarlet and 32 Bit linker files (if running a 64 Bit OS):

yum install xmlstarlet
yum install glibc.i686
yum install libgcc.i686
yum install libstdc++.i686

Ubuntu/Debian

If you're not root, or under a superuser, make sure to preface the aptitude commands with "sudo".

apt-get update
apt-get install xmlstarlet
apt-get install expect
apt-get install lib32gcc-s1
apt-get install lib32stdc++6
apt-get install make
apt-get install gcc

Linux Mint

You'll need libc6-dev to compile the start-stop-daemon.

CentOS 7

Looks like you have to enable the ​Extra Packages for Enterprise Linux (EPEL) repository to get XMLStarlet installed:

yum install epel-release

Others

Not tested by me. If anyone did so and could provide information about what additional stuff is required compared to a clean OS install and how to install those things I would gladly add it here ;)