diff --git a/how-to-backup-and-encrypt-data-privately-and-securely-using-rsync-and-veracrypt-on-macos/README.md b/how-to-backup-and-encrypt-data-privately-and-securely-using-rsync-and-veracrypt-on-macos/README.md
index 51d5b10..59cc0b5 100644
--- a/how-to-backup-and-encrypt-data-privately-and-securely-using-rsync-and-veracrypt-on-macos/README.md
+++ b/how-to-backup-and-encrypt-data-privately-and-securely-using-rsync-and-veracrypt-on-macos/README.md
@@ -212,14 +212,14 @@ veracrypt --text --mount --pim 0 --keyfiles "" --protect-hidden no "$BACKUP_VOLU
 
 mkdir -p /Volumes/Backup/Versioning
 
-declare -a files=(
+files=(
   "/Users/$(whoami)/.gnupg"
   "/Users/$(whoami)/.ssh"
   "/Users/$(whoami)/Library/Keychains"
 )
 
 for file in "\${files[@]}"; do
-  rsync -axRS --delete --backup --backup-dir /Volumes/Backup/Versioning --suffix=\$(date +'.%F_%H-%M') "\$file" /Volumes/Backup
+  rsync -axRS --delete --backup --backup-dir /Volumes/Backup/Versioning --suffix=\$(date +".%F-%H%M%S") "\$file" /Volumes/Backup
 done
 
 if [ "\$(find /Volumes/Backup/Versioning -type f -ctime +90)" != "" ]; then
@@ -250,7 +250,7 @@ EOF
 chmod +x /usr/local/bin/backup.sh
 ```
 
-### Step 14: edit backup script
+### Step 14: edit `/usr/local/bin/backup.sh` script
 
 ```shell
 vi /usr/local/bin/backup.sh
@@ -285,6 +285,38 @@ EOF
 chmod +x /usr/local/bin/check.sh
 ```
 
+### Step 16: create `/usr/local/bin/restore.sh` script
+
+```shell
+cat << EOF > /usr/local/bin/restore.sh
+#! /bin/sh
+
+set -e
+
+function cleanup()
+{
+  if [ -d "/Volumes/Backup" ]; then
+    veracrypt --text --dismount "$BACKUP_VOLUME_PATH"
+  fi
+}
+
+trap cleanup ERR INT
+
+veracrypt --text --mount --pim 0 --keyfiles "" --protect-hidden no "$BACKUP_VOLUME_PATH" /Volumes/Backup
+
+open /Volumes/Backup
+
+printf "Restore data and press enter"
+
+read -r answer
+
+veracrypt --text --dismount "$BACKUP_VOLUME_PATH"
+
+printf "%s\n" "Done"
+EOF
+chmod +x /usr/local/bin/restore.sh
+```
+
 ## Usage guide
 
 ### Backup
@@ -304,7 +336,7 @@ Done
 
 👍
 
-### Check integrity of backup
+### Check
 
 ```console
 $ check.sh
@@ -315,3 +347,16 @@ OK
 OK
 
 👍
+
+### Restore
+
+```console
+$ restore.sh
+Enter password for /Volumes/Samsung BAR/b:
+Restore data and press enter
+Done
+```
+
+Done
+
+👍
diff --git a/how-to-configure-self-hosted-vpn-kill-switch-using-pf-firewall-on-macos/README.md b/how-to-configure-self-hosted-vpn-kill-switch-using-pf-firewall-on-macos/README.md
index 4908a2f..7a219c4 100644
--- a/how-to-configure-self-hosted-vpn-kill-switch-using-pf-firewall-on-macos/README.md
+++ b/how-to-configure-self-hosted-vpn-kill-switch-using-pf-firewall-on-macos/README.md
@@ -255,7 +255,7 @@ sudo pfctl -F all -f /etc/pf.conf
 
 ```shell
 sudo mkdir -p /usr/local/sbin
-sudo chown $(whoami):admin /usr/local/sbin/
+sudo chown $(whoami):admin /usr/local/sbin
 ```
 
 ### Step 11: source `/usr/local/sbin` folder
diff --git a/how-to-self-host-a-hardened-strongswan-ikev2-ipsec-vpn-server-for-ios-and-macos/README.md b/how-to-self-host-a-hardened-strongswan-ikev2-ipsec-vpn-server-for-ios-and-macos/README.md
index 4b25fd4..b4abcc5 100644
--- a/how-to-self-host-a-hardened-strongswan-ikev2-ipsec-vpn-server-for-ios-and-macos/README.md
+++ b/how-to-self-host-a-hardened-strongswan-ikev2-ipsec-vpn-server-for-ios-and-macos/README.md
@@ -213,7 +213,7 @@ apt install -y curl python
 
 Shout out to [Andrew Ho](https://gist.github.com/andrewlkho/31341da4f5953b8d977aab368e6280a8) for `ulagen.py`.
 
-The following commands downloads and runs [ulagen.py](./ulagen.py) (advanced users may wish to download [ulagen.py.sig](./ulagen.py.sig) and verify signature using my [PGP public key](https://sunknudsen.com/sunknudsen.asc) before running script).
+The following command downloads and runs [ulagen.py](./ulagen.py) ([PGP signature](./ulagen.py.sig), [PGP public key](https://sunknudsen.com/sunknudsen.asc)).
 
 ```console
 $ curl -s https://sunknudsen.com/static/media/privacy-guides/how-to-self-host-a-hardened-strongswan-ikev2-ipsec-vpn-server-for-ios-and-macos/ulagen.py | python | grep "First subnet" | awk '{print "STRONGSWAN_IPV6_ULA="$3}' | tee -a ~/.bashrc
diff --git a/how-to-spoof-anonymize-your-mac-address-and-hostname-automatically-at-boot-on-macos/README.md b/how-to-spoof-anonymize-your-mac-address-and-hostname-automatically-at-boot-on-macos/README.md
index 825905d..148504e 100644
--- a/how-to-spoof-anonymize-your-mac-address-and-hostname-automatically-at-boot-on-macos/README.md
+++ b/how-to-spoof-anonymize-your-mac-address-and-hostname-automatically-at-boot-on-macos/README.md
@@ -24,10 +24,32 @@ Publication date: 2020-05-19T00:00:00.000Z
 
 ```shell
 sudo mkdir -p /usr/local/sbin
-sudo chown $(whoami):admin /usr/local/sbin/
+sudo chown $(whoami):admin /usr/local/sbin
 ```
 
-### Step 2: create `spoof.sh` script
+### Step 2: source `/usr/local/sbin` folder
+
+Find which shell is configured using `echo $SHELL`.
+
+#### Bash (/bin/bash)
+
+```shell
+cat << "EOF" >> ~/.bash_profile
+export PATH=${PATH}:/usr/local/sbin
+EOF
+source ~/.bash_profile
+```
+
+#### Z Shell (/bin/zsh)
+
+```shell
+cat << "EOF" >> ~/.zshrc
+export PATH=${PATH}:/usr/local/sbin
+EOF
+source ~/.zshrc
+```
+
+### Step 3: create `spoof.sh` script
 
 ```shell
 cat << "EOF" > /usr/local/sbin/spoof.sh
@@ -37,10 +59,10 @@ set -e
 
 export LC_CTYPE=C
 
-dirname=`dirname "${BASH_SOURCE}"`
+basedir=$(dirname "$0")
 
 # Spoof computer name
-first_name=`sed "$(jot -r 1 1 2048)q;d" $dirname/first_names.txt | sed -e 's/[^a-zA-Z]//g'`
+first_name=`sed "$(jot -r 1 1 2048)q;d" $basedir/first-names.txt | sed -e 's/[^a-zA-Z]//g'`
 model_name=`system_profiler SPHardwareDataType | awk '/Model Name/ {$1=$2=""; print $0}' | sed -e 's/^[ ]*//'`
 computer_name="$first_name’s $model_name"
 host_name=`echo $computer_name | sed -e 's/’//g' | sed -e 's/ /-/g'`
@@ -50,7 +72,7 @@ sudo scutil --set HostName "$host_name"
 printf "%s\n" "Spoofed hostname to $host_name"
 
 # Spoof MAC address of en0 interface
-mac_address_prefix=`sed "$(jot -r 1 1 768)q;d" $dirname/mac_address_prefixes.txt | sed -e 's/[^A-F0-9:]//g'`
+mac_address_prefix=`sed "$(jot -r 1 1 768)q;d" $basedir/mac-address-prefixes.txt | sed -e 's/[^A-F0-9:]//g'`
 mac_address_suffix=`openssl rand -hex 3 | sed 's/\(..\)/\1:/g; s/.$//'`
 mac_address=`echo "$mac_address_prefix:$mac_address_suffix" | awk '{print toupper($0)}'`
 sudo ifconfig en0 ether "$mac_address"
@@ -58,29 +80,29 @@ printf "%s\n" "Spoofed MAC address of en0 interface to $mac_address"
 EOF
 ```
 
-### Step 3: make `spoof.sh` executable
+### Step 4: make `spoof.sh` executable
 
 ```shell
 chmod +x /usr/local/sbin/spoof.sh
 ```
 
-### Step 4: download [first_names.txt](first_names.txt)
+### Step 5: download [first-names.txt](first-names.txt)
 
 This list includes the top 2048 most popular baby names from the [USA Social Security Administration](https://www.ssa.gov/oact/babynames/limits.html).
 
 ```shell
-curl -o /usr/local/sbin/first_names.txt https://sunknudsen.com/static/media/privacy-guides/how-to-spoof-anonymize-your-mac-address-and-hostname-automatically-at-boot-on-macos/first_names.txt
+curl -o /usr/local/sbin/first-names.txt https://sunknudsen.com/static/media/privacy-guides/how-to-spoof-anonymize-your-mac-address-and-hostname-automatically-at-boot-on-macos/first-names.txt
 ```
 
-### Step 5: download [mac_address_prefixes.txt](mac_address_prefixes.txt)
+### Step 6: download [mac-address-prefixes.txt](mac-address-prefixes.txt)
 
 This list includes 768 Apple MAC address prefixes.
 
 ```shell
-curl -o /usr/local/sbin/mac_address_prefixes.txt https://sunknudsen.com/static/media/privacy-guides/how-to-spoof-anonymize-your-mac-address-and-hostname-automatically-at-boot-on-macos/mac_address_prefixes.txt
+curl -o /usr/local/sbin/mac-address-prefixes.txt https://sunknudsen.com/static/media/privacy-guides/how-to-spoof-anonymize-your-mac-address-and-hostname-automatically-at-boot-on-macos/mac-address-prefixes.txt
 ```
 
-### Step 6: create `local.spoof.plist` launch daemon
+### Step 7: create `local.spoof.plist` launch daemon
 
 This step is responsible for running `spoof.sh` every time your Mac boots.
 
@@ -105,7 +127,7 @@ cat << "EOF" | sudo tee /Library/LaunchDaemons/local.spoof.plist
 EOF
 ```
 
-### Step 7: reboot and confirm hostname and MAC address have been spoofed
+### Step 8: reboot and confirm hostname and MAC address have been spoofed
 
 ```shell
 # Spoofed hostname
@@ -131,12 +153,12 @@ $ networksetup -listallhardwareports | awk -v RS= '/en0/{print $NF}'
 
 ### Step 1: set computer name, local hostname and hostname
 
-Replace `John Doe` with a value to your liking. Don’t forget to replace empty spaces by `-` for `LocalHostName` and `HostName`.
+Replace `John` with a name to your liking.
 
 ```shell
-sudo scutil --set ComputerName "John Doe"
-sudo scutil --set LocalHostName "John-Doe"
-sudo scutil --set HostName "John-Doe"
+sudo scutil --set ComputerName "John’s MacBook Pro"
+sudo scutil --set LocalHostName "Johns-MacBook-Pro"
+sudo scutil --set HostName "Johns-MacBook-Pro"
 ```
 
 ### Step 2: set MAC address to default value
@@ -151,6 +173,6 @@ sudo rm /Library/LaunchDaemons/local.spoof.plist
 
 ```shell
 rm /usr/local/sbin/spoof.sh
-rm /usr/local/sbin/first_names.txt
-rm /usr/local/sbin/mac_address_prefixes.txt
+rm /usr/local/sbin/first-names.txt
+rm /usr/local/sbin/mac-address-prefixes.txt
 ```
diff --git a/how-to-spoof-anonymize-your-mac-address-and-hostname-automatically-at-boot-on-macos/first_names.txt b/how-to-spoof-anonymize-your-mac-address-and-hostname-automatically-at-boot-on-macos/first-names.txt
similarity index 100%
rename from how-to-spoof-anonymize-your-mac-address-and-hostname-automatically-at-boot-on-macos/first_names.txt
rename to how-to-spoof-anonymize-your-mac-address-and-hostname-automatically-at-boot-on-macos/first-names.txt
diff --git a/how-to-spoof-anonymize-your-mac-address-and-hostname-automatically-at-boot-on-macos/mac_address_prefixes.txt b/how-to-spoof-anonymize-your-mac-address-and-hostname-automatically-at-boot-on-macos/mac-address-prefixes.txt
similarity index 100%
rename from how-to-spoof-anonymize-your-mac-address-and-hostname-automatically-at-boot-on-macos/mac_address_prefixes.txt
rename to how-to-spoof-anonymize-your-mac-address-and-hostname-automatically-at-boot-on-macos/mac-address-prefixes.txt