Make sample script also POSIX compliant

Signed-off-by: Tommy <contact@tommytran.io>

Fedora-Server-40.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 # Copyright (C) 2021-2024 Thien Tran
 #
@@ -17,7 +17,7 @@
 #Please note that this is how I PERSONALLY setup my computer - I do some stuff such as not using anything to download GNOME extensions from extensions.gnome.org and installing the extensions as a package instead
 
 output(){
-    echo -e '\e[36m'"$1"'\e[0m';
+    printf '\e[1;34m%-6s\e[m\n' "${@}"
 }
 
 unpriv(){
@@ -128,7 +128,7 @@ sudo sed -i 's;  interface: 242.242.0.1;#  interface: 242.242.0.1;g' /etc/unboun
 sudo sed -i 's;  access-control: 242.242.0.0/16 allow;#  access-control: 242.242.0.0/16 allow;g' /etc/unbound/unbound.conf
 sudo chmod 644 /etc/unbound/unbound.conf
 sudo mkdir /etc/systemd/system/unbound.service.d
-unpriv curl https://raw.githubusercontent.com/TommyTran732/Fedora-CoreOS-Ignition/main/etc/systemd/system/unbound.service.d/override.conf | sudo tee /etc/systemd/system/unbound.service.d/override.conf
+unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/systemd/system/unbound.service.d/override.conf | sudo tee /etc/systemd/system/unbound.service.d/override.conf
 sudo chmod 644 /etc/systemd/system/unbound.service.d/override.conf
 sudo systemctl enable --now unbound
 sudo systemctl disable systemd-resolved

Fedora-Workstation-40.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 # Copyright (C) 2021-2024 Thien Tran
 #
@@ -17,7 +17,7 @@
 #Please note that this is how I PERSONALLY setup my computer - I do some stuff such as not using anything to download GNOME extensions from extensions.gnome.org and installing the extensions as a package instead
 
 output(){
-    echo -e '\e[36m'"$1"'\e[0m';
+    printf '\e[1;34m%-6s\e[m\n' "${@}"
 }
 
 unpriv(){
@@ -198,7 +198,7 @@ flatpak update -y
 
 # Install Microsoft Edge if x86_64
 MACHINE_TYPE=$(uname -m)
-if [ "${MACHINE_TYPE}" == 'x86_64' ]; then
+if [ "${MACHINE_TYPE}" = 'x86_64' ]; then
     output 'x86_64 machine, installing Microsoft Edge.'
     echo '[microsoft-edge]
 name=microsoft-edge

Proxmox-8.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 # Copyright (C) 2021-2024 Thien Tran
 #
@@ -17,7 +17,7 @@
 # You need to add either the non-subscription repo or the testing repo from the Proxmox WebUI after running this script.
 
 output(){
-    echo -e '\e[36m'"$1"'\e[0m';
+    printf '\e[1;34m%-6s\e[m\n' "${@}"
 }
 
 # Compliance and updates
@@ -65,7 +65,7 @@ apt autoremove -y
 apt install -y intel-microcode tuned fwupd dropbear-initramfs
 
 ### This part assumes that you are using systemd-boot
-echo -e "mitigations=auto,nosmt spectre_v2=on spectre_bhi=on spec_store_bypass_disable=on tsx=off kvm.nx_huge_pages=force nosmt=force l1d_flush=on spec_rstack_overflow=safe-ret gather_data_sampling=force reg_file_data_sampling=on random.trust_bootloader=off random.trust_cpu=off intel_iommu=on amd_iommu=force_isolation efi=disable_early_pci_dma iommu=force iommu.passthrough=0 iommu.strict=1 slab_nomerge init_on_alloc=1 init_on_free=1 pti=on vsyscall=none ia32_emulation=0 page_alloc.shuffle=1 randomize_kstack_offset=on debugfs=off $(cat /etc/kernel/cmdline)" > /etc/kernel/cmdline
+echo "mitigations=auto,nosmt spectre_v2=on spectre_bhi=on spec_store_bypass_disable=on tsx=off kvm.nx_huge_pages=force nosmt=force l1d_flush=on spec_rstack_overflow=safe-ret gather_data_sampling=force reg_file_data_sampling=on random.trust_bootloader=off random.trust_cpu=off intel_iommu=on amd_iommu=force_isolation efi=disable_early_pci_dma iommu=force iommu.passthrough=0 iommu.strict=1 slab_nomerge init_on_alloc=1 init_on_free=1 pti=on vsyscall=none ia32_emulation=0 page_alloc.shuffle=1 randomize_kstack_offset=on debugfs=off $(cat /etc/kernel/cmdline)" > /etc/kernel/cmdline
 proxmox-boot-tool refresh
 ###
 

RHEL-9.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 # Copyright (C) 2021-2024 Thien Tran
 #
@@ -15,11 +15,11 @@
 # the License.
 
 output(){
-  echo -e '\e[36m'"$1"'\e[0m';
+    printf '\e[1;34m%-6s\e[m\n' "${@}"
 }
 
 unpriv(){
-  sudo -u nobody "$@"
+    sudo -u nobody "$@"
 }
 
 virtualization=$(systemd-detect-virt)
@@ -145,25 +145,7 @@ forward-zone:
 sudo chmod 644 /etc/unbound/unbound.conf
 
 sudo mkdir -p /etc/systemd/system/unbound.service.d
-echo $'[Service]
+unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/systemd/system/unbound.service.d/override.conf | sudo tee /etc/systemd/system/unbound.service.d/override.conf
-MemoryDenyWriteExecute=true
-PrivateDevices=true
-PrivateTmp=true
-ProtectHome=true
-ProtectClock=true
-ProtectControlGroups=true
-ProtectKernelLogs=true
-ProtectKernelModules=true
-# This breaks using socket options like \'so-rcvbuf\'. Explicitly disable for visibility.
-ProtectKernelTunables=true
-ProtectProc=invisible
-RestrictAddressFamilies=AF_INET AF_INET6 AF_NETLINK AF_UNIX
-RestrictRealtime=true
-SystemCallArchitectures=native
-SystemCallFilter=~@clock @cpu-emulation @debug @keyring @module mount @obsolete @resources
-RestrictNamespaces=yes
-LockPersonality=yes' | sudo tee /etc/systemd/system/unbound.service.d/override.conf
-
 sudo chmod 644 /etc/systemd/system/unbound.service.d/override.conf
 
 sudo systemctl enable --now unbound

Ubuntu-24.04-Desktop.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 # Copyright (C) 2021-2024 Thien Tran
 #
@@ -17,7 +17,7 @@
 #Please note that this is how I PERSONALLY setup my computer - I do some stuff such as not using anything to download GNOME extensions from extensions.gnome.org and installing the extensions as a package instead
 
 output(){
-    echo -e '\e[36m'"$1"'\e[0m';
+    printf '\e[1;34m%-6s\e[m\n' "${@}"
 }
 
 unpriv(){
@@ -177,7 +177,7 @@ fi
 
 # Install Microsoft Edge if x86_64
 MACHINE_TYPE=$(uname -m)
-if [ "${MACHINE_TYPE}" == 'x86_64' ] || [ -f /media/psf/RosettaLinux/rosetta ] || [ -f /media/rosetta/rosetta ]; then
+if [ "${MACHINE_TYPE}" = 'x86_64' ] || [ -f /media/psf/RosettaLinux/rosetta ] || [ -f /media/rosetta/rosetta ]; then
     output 'x86_64 machine, installing Microsoft Edge.'
     unpriv curl https://packages.microsoft.com/keys/microsoft.asc | gpg --dearmor | sudo tee /usr/share/keyrings/microsoft.gpg
     chmod 644  /usr/share/keyrings/microsoft.gpg

Ubuntu-24.04-Server.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 # Copyright (C) 2021-2024 Thien Tran
 #
@@ -17,11 +17,11 @@
 #Meant to be run on Ubuntu Pro Minimal
 
 output(){
-  echo -e '\e[36m'"$1"'\e[0m';
+    printf '\e[1;34m%-6s\e[m\n' "${@}"
 }
 
 unpriv(){
-  sudo -u nobody "$@"
+    sudo -u nobody "$@"
 }
 
 virtualization=$(systemd-detect-virt)
@@ -176,38 +176,8 @@ forward-zone:
 
 sudo chmod 644 /etc/unbound/unbound.conf.d/custom.conf
 
-mkdir -p /etc/systemd/system/unbound.service.d
+sudo mkdir -p /etc/systemd/system/unbound.service.d
-echo $'[Service]
+unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/systemd/system/unbound.service.d/override-chroot.conf | sudo tee /etc/systemd/system/unbound.service.d/override.conf
-CapabilityBoundingSet=CAP_NET_BIND_SERVICE CAP_SETGID CAP_SETUID CAP_SYS_CHROOT CAP_SYS_RESOURCE CAP_NET_RAW
-MemoryDenyWriteExecute=true
-NoNewPrivileges=true
-PrivateDevices=true
-PrivateTmp=true
-ProtectHome=true
-ProtectClock=true
-ProtectControlGroups=true
-ProtectKernelLogs=true
-ProtectKernelModules=true
-# This breaks using socket options like \'so-rcvbuf\'. Explicitly disable for visibility.
-ProtectKernelTunables=false
-ProtectProc=invisible
-RestrictAddressFamilies=AF_INET AF_INET6 AF_NETLINK AF_UNIX
-RestrictRealtime=true
-SystemCallArchitectures=native
-SystemCallFilter=~@clock @cpu-emulation @debug @keyring @module mount @obsolete @resources
-RestrictNamespaces=yes
-LockPersonality=yes
-RestrictSUIDSGID=yes
-ReadWritePaths=@UNBOUND_RUN_DIR@ @UNBOUND_CHROOT_DIR@
-
-# Below rules are needed when chroot is enabled (usually it\'s enabled by default).
-# If chroot is disabled like chroot: "" then they may be safely removed.
-TemporaryFileSystem=@UNBOUND_CHROOT_DIR@/dev:ro
-TemporaryFileSystem=@UNBOUND_CHROOT_DIR@/run:ro
-BindReadOnlyPaths=-/run/systemd/notify:@UNBOUND_CHROOT_DIR@/run/systemd/notify
-BindReadOnlyPaths=-/dev/urandom:@UNBOUND_CHROOT_DIR@/dev/urandom
-BindPaths=-/dev/log:@UNBOUND_CHROOT_DIR@/dev/log' | sudo tee /etc/systemd/system/unbound.service.d/override.conf
-
 sudo chmod 644 /etc/systemd/system/unbound.service.d/override.conf
 
 sudo systemctl daemon-reload

etc/systemd/system/unbound.service.d/override-chroot.conf

@@ -0,0 +1,34 @@
+[Service]
+CapabilityBoundingSet=CAP_NET_BIND_SERVICE CAP_SETGID CAP_SETUID CAP_SYS_CHROOT CAP_SYS_RESOURCE CAP_NET_RAW
+MemoryDenyWriteExecute=true
+NoNewPrivileges=true
+PrivateDevices=true
+PrivateTmp=true
+ProtectHome=true
+ProtectClock=true
+ProtectControlGroups=true
+ProtectKernelLogs=true
+ProtectKernelModules=true
+# This breaks using socket options like 'so-rcvbuf'. Explicitly disable for visibility.
+ProtectKernelTunables=false
+ProtectProc=invisible
+#ProtectSystem=strict
+#RuntimeDirectory=unbound
+#ConfigurationDirectory=unbound
+#StateDirectory=unbound
+RestrictAddressFamilies=AF_INET AF_INET6 AF_NETLINK AF_UNIX
+RestrictRealtime=true
+SystemCallArchitectures=native
+SystemCallFilter=~@clock @cpu-emulation @debug @keyring @module mount @obsolete @resources
+RestrictNamespaces=yes
+LockPersonality=yes
+RestrictSUIDSGID=yes
+ReadWritePaths=@UNBOUND_RUN_DIR@ @UNBOUND_CHROOT_DIR@
+
+# Below rules are needed when chroot is enabled (usually it's enabled by default).
+# If chroot is disabled like chroot: "" then they may be safely removed.
+TemporaryFileSystem=@UNBOUND_CHROOT_DIR@/dev:ro
+TemporaryFileSystem=@UNBOUND_CHROOT_DIR@/run:ro
+BindReadOnlyPaths=-/run/systemd/notify:@UNBOUND_CHROOT_DIR@/run/systemd/notify
+BindReadOnlyPaths=-/dev/urandom:@UNBOUND_CHROOT_DIR@/dev/urandom
+BindPaths=-/dev/log:@UNBOUND_CHROOT_DIR@/dev/log

etc/systemd/system/unbound.service.d/override.conf

@@ -0,0 +1,25 @@
+[Service]
+CapabilityBoundingSet=CAP_NET_BIND_SERVICE CAP_SETGID CAP_SETUID CAP_SYS_CHROOT CAP_SYS_RESOURCE CAP_NET_RAW CAP_DAC_OVERRIDE
+MemoryDenyWriteExecute=true
+#NoNewPrivileges=true
+PrivateDevices=true
+PrivateTmp=true
+ProtectHome=true
+ProtectClock=true
+ProtectControlGroups=true
+ProtectKernelLogs=true
+ProtectKernelModules=true
+# This breaks using socket options like 'so-rcvbuf'.
+ProtectKernelTunables=true
+ProtectProc=invisible
+#ProtectSystem=strict
+#RuntimeDirectory=unbound
+#ConfigurationDirectory=unbound
+#StateDirectory=unbound
+RestrictAddressFamilies=AF_INET AF_INET6 AF_NETLINK AF_UNIX
+RestrictRealtime=true
+SystemCallArchitectures=native
+SystemCallFilter=~@clock @cpu-emulation @debug @keyring @module mount @obsolete @resources
+RestrictNamespaces=yes
+LockPersonality=yes
+RestrictSUIDSGID=yes

sample-scripts/Ubuntu-24.04-LEMP.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 # Copyright (C) 2024 Thien Tran
 #
@@ -17,7 +17,7 @@
 # Assumes that it is run AFTER https://github.com/TommyTran732/Linux-Setup-Scripts/blob/main/Ubuntu-24.04-Server.sh
 
 output(){
-    echo -e '\e[36m'"$1"'\e[0m';
+    printf '\e[1;34m%-6s\e[m\n' "${@}"
 }
 
 unpriv(){