diff --git a/-installBrave.sh b/-installBrave.sh
index 1adfe20..12b538e 100644
--- a/-installBrave.sh
+++ b/-installBrave.sh
@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 sudo apt install apt-transport-https curl -y
 sudo curl -fsSLo /usr/share/keyrings/brave-browser-archive-keyring.gpg https://brave-browser-apt-release.s3.brave.com/brave-browser-archive-keyring.gpg
 echo "deb [signed-by=/usr/share/keyrings/brave-browser-archive-keyring.gpg arch=amd64] https://brave-browser-apt-release.s3.brave.com/ stable main" | sudo tee /etc/apt/sources.list.d/brave-browser-release.list
diff --git a/installClipboardHistory.sh b/installClipboardHistory.sh
index e593765..90c945d 100644
--- a/installClipboardHistory.sh
+++ b/installClipboardHistory.sh
@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 sudo apt update
 sudo apt install gnome-shell-extension-gpaste gnome-shell-extension-prefs -y
 
diff --git a/installEmojiPicker.sh b/installEmojiPicker.sh
index 4346a03..ceef32e 100644
--- a/installEmojiPicker.sh
+++ b/installEmojiPicker.sh
@@ -1,8 +1,10 @@
+#!/usr/bin/env bash
+
 # Fetch installation script
 wget -q https://raw.githubusercontent.com/GaZaTu/x11-emoji-picker/master/install.sh -O /tmp/install_EP.sh
 
 # Remove the great emoji after the installation
-sed -i 's/echo "$PROJECT_NAME installed! 🎉"/echo "$PROJECT_NAME installed!"/' /tmp/install_EP.sh
+sed -i "s/echo \"$PROJECT_NAME installed! 🎉\"/echo \"$PROJECT_NAME installed!\"/" /tmp/install_EP.sh
 
 # Installation
 yes | bash /tmp/install_EP.sh
@@ -15,7 +17,7 @@ then
 fi
 
 # Use custom configuration
-rm $HOME/.config/gazatu.xyz/emoji-picker.ini 2>/dev/null
-wget -q --show-progress https://git.kennel.ml/Anri/myLinuxConfiguration/raw/branch/main/.config/gazatu.xyz/emoji-picker.ini -P $HOME/.config/gazatu.xyz/
+rm "$HOME"/.config/gazatu.xyz/emoji-picker.ini 2>/dev/null
+wget -q --show-progress https://git.kennel.ml/Anri/myLinuxConfiguration/raw/branch/main/.config/gazatu.xyz/emoji-picker.ini -P "$HOME"/.config/gazatu.xyz/
 
 echo -e "\nEmoji Picker configured! 🎉"
diff --git a/installFish.sh b/installFish.sh
index 5d02515..b6cd2ac 100644
--- a/installFish.sh
+++ b/installFish.sh
@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 # Adds the official Fish repository
 sudo apt-add-repository ppa:fish-shell/release-3 -y
 
@@ -9,7 +11,7 @@ sudo apt install fish fzf bat procps curl exa -y
 echo -e "\nFish installed!"
 
 # Fish default shell
-sudo chsh -s /usr/bin/fish $USER
+sudo chsh -s /usr/bin/fish "$USER"
 
 # Removing motd
 fish -c 'set -U fish_greeting'
@@ -19,13 +21,13 @@ curl -sL https://git.io/fisher | fish -c 'source && fisher install jorgebucaran/
 fish -c 'fisher install jethrokuan/fzf'
 
 # Install SSH
-rm $HOME/.config/fish/functions/fish_ssh_agent.fish 2>/dev/null; wget https://gitlab.com/kyb/fish_ssh_agent/raw/master/functions/fish_ssh_agent.fish -P $HOME/.config/fish/functions/
+rm "$HOME"/.config/fish/functions/fish_ssh_agent.fish 2>/dev/null; wget https://gitlab.com/kyb/fish_ssh_agent/raw/master/functions/fish_ssh_agent.fish -P "$HOME"/.config/fish/functions/
 
 # Update the fish config with mine (edit that once installed for you)
-rm $HOME/.config/fish/config.fish 2>/dev/null; wget https://git.kennel.ml/Anri/myLinuxConfiguration/raw/branch/main/.config/fish/config.fish -P $HOME/.config/fish/
+rm "$HOME"/.config/fish/config.fish 2>/dev/null; wget https://git.kennel.ml/Anri/myLinuxConfiguration/raw/branch/main/.config/fish/config.fish -P "$HOME"/.config/fish/
 
 # Update the prompt with mine
-rm $HOME/.config/fish/functions/fish_prompt.fish 2>/dev/null; wget https://git.kennel.ml/Anri/myLinuxConfiguration/raw/branch/main/.config/fish/functions/fish_prompt.fish -P $HOME/.config/fish/functions/
+rm "$HOME"/.config/fish/functions/fish_prompt.fish 2>/dev/null; wget https://git.kennel.ml/Anri/myLinuxConfiguration/raw/branch/main/.config/fish/functions/fish_prompt.fish -P "$HOME"/.config/fish/functions/
 
 # Updating color scheme (based on Base16 Eighties)
 fish -c 'set -U fish_color_normal normal'
diff --git a/installFlameshot.sh b/installFlameshot.sh
index c83c11f..71ba93c 100644
--- a/installFlameshot.sh
+++ b/installFlameshot.sh
@@ -1,11 +1,13 @@
+#!/usr/bin/env bash
+
 # Install flameshot
 sudo apt update
 sudo apt install flameshot -y
 echo -e "\nFlameshot installed!"
 
 # Apply custom configuration
-rm $HOME/.config/flameshot/flameshot.ini 2>/dev/null
-wget -q --show-progress https://git.kennel.ml/Anri/myLinuxConfiguration/raw/branch/main/.config/flameshot/flameshot.ini -P $HOME/.config/flameshot/
+rm "$HOME"/.config/flameshot/flameshot.ini 2>/dev/null
+wget -q --show-progress https://git.kennel.ml/Anri/myLinuxConfiguration/raw/branch/main/.config/flameshot/flameshot.ini -P "$HOME"/.config/flameshot/
 
 # Remove old shortcut assign with the Print key
 gsettings set org.gnome.settings-daemon.plugins.media-keys screenshot "[]"
diff --git a/installGitLFS.sh b/installGitLFS.sh
index 00f35dc..58b6c4b 100644
--- a/installGitLFS.sh
+++ b/installGitLFS.sh
@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 # Latest version
 # No available version for latest Ubuntu version
 # curl -s https://packagecloud.io/install/repositories/github/git-lfs/script.deb.sh | sudo bash
diff --git a/installGlobalScript.sh b/installGlobalScript.sh
index 29d0eba..52b99c9 100644
--- a/installGlobalScript.sh
+++ b/installGlobalScript.sh
@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 if grep "Ubuntu" /proc/version > /dev/null || grep "WSL" /proc/version > /dev/null;
 then
     # Update of APT
@@ -7,7 +9,7 @@ then
     which curl &> /dev/null || sudo apt install apt-transport-https curl -y # install curl (along with apt-transport-https) if not already installed
 
     git clone -c http.sslverify=false https://git.kennel.ml/Anri/myLinuxConfiguration.git
-    cd myLinuxConfiguration
+    cd myLinuxConfiguration || exit
 
     # Upgrade and clean already installed packages
     sudo apt upgrade -y
diff --git a/installJava.sh b/installJava.sh
index 8ec4ad9..e86ec02 100644
--- a/installJava.sh
+++ b/installJava.sh
@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 # Install SDKMAN
 # Install dependencies
 sudo apt update
@@ -6,8 +8,8 @@ curl -s "https://get.sdkman.io" | bash
 source "$HOME/.sdkman/bin/sdkman-init.sh"
 
 # Adding Fish support if fish is installed
-if [ -x $HOME/.config/fish ] ; then
-   if [ ! -f $HOME/.config/fish/functions/fisher.fish ] ; then # install fisher if not already installed
+if [ -x "$HOME"/.config/fish ] ; then
+   if [ ! -f "$HOME"/.config/fish/functions/fisher.fish ] ; then # install fisher if not already installed
       curl -sL https://git.io/fisher | fish -c 'source && fisher install jorgebucaran/fisher'
    fi
    fish -c 'fisher install reitzig/sdkman-for-fish'
diff --git a/installKolourPaint.sh b/installKolourPaint.sh
index bbed013..52dd317 100644
--- a/installKolourPaint.sh
+++ b/installKolourPaint.sh
@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 # Install
 sudo snap install kolourpaint
 
diff --git a/installLatex.sh b/installLatex.sh
index 764936c..c12c7bc 100644
--- a/installLatex.sh
+++ b/installLatex.sh
@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 # Install Latex
 sudo apt update
 sudo apt install texlive-full python3-pygments -y
@@ -11,7 +13,7 @@ then
     apps=("display-im6.q16" "prerex" "vprerex" "texdoctk" "info")
 
     # We remove the Ubuntu desktop shortcut only if it already exists
-    for app in ${apps[@]}
+    for app in "${apps[@]}"
     do
         if [ -f $pathicons/$app.desktop ]
         then
diff --git a/installMultiMC.sh b/installMultiMC.sh
index 77f1f54..95d9dff 100644
--- a/installMultiMC.sh
+++ b/installMultiMC.sh
@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 # Fetching a link to get the latest version of MultiMC
 echo "Retrieve the last package..."
 latest=$(wget -qO- https://multimc.org/ | grep "Debian/Ubuntu") # retrieving for the official website
@@ -5,7 +7,7 @@ pat='href="(.*)" ' # regex
 [[ $latest =~ $pat ]] # Use of REGEX
 
 # Download the latest package
-wget -q --show-progress -i ${BASH_REMATCH[1]} -O MultiMC.deb
+wget -q --show-progress -i "${BASH_REMATCH[1]}" -O MultiMC.deb
 
 sudo apt install ./MultiMC.deb -y
 rm MultiMC.deb
diff --git a/installOBS.sh b/installOBS.sh
index 4f73bd6..912c4bc 100644
--- a/installOBS.sh
+++ b/installOBS.sh
@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 # Add repo
 sudo add-apt-repository ppa:obsproject/obs-studio -y
 
diff --git a/installObsidian.sh b/installObsidian.sh
index aa63235..0063c51 100644
--- a/installObsidian.sh
+++ b/installObsidian.sh
@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 # Fetching last Obsidian version
 wget -q https://api.github.com/repos/obsidianmd/obsidian-releases/releases/latest
 echo "Retrieve the last package..."
diff --git a/installParsec.sh b/installParsec.sh
index 5c157ad..c53397c 100644
--- a/installParsec.sh
+++ b/installParsec.sh
@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 # Downloading package
 wget -q --show-progress https://builds.parsec.app/package/parsec-linux.deb -O parsec.deb
 
diff --git a/installRust.sh b/installRust.sh
index 72555eb..9caabce 100644
--- a/installRust.sh
+++ b/installRust.sh
@@ -1,13 +1,15 @@
+#!/usr/bin/env bash
+
 which curl &> /dev/null || ( sudo apt update; sudo apt install curl -y ) # Install curl if not already installed
 
 # Install rust
 curl https://sh.rustup.rs -sSf | sh -s -- -y
 
 # Configure current session
-source $HOME/.cargo/env
+source "$HOME"/.cargo/env
 
 # If fish is used, adding cargo to path
-if [ -x $HOME/.config/fish ] ; then
+if [ -x "$HOME"/.config/fish ] ; then
     fish -c 'set -Up fish_user_paths ~/.cargo/bin'
 fi
 
diff --git a/installSignal.sh b/installSignal.sh
index 5630d95..99f18cf 100644
--- a/installSignal.sh
+++ b/installSignal.sh
@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 # Add the public software signing key
 wget -O- -q --show-progress https://updates.signal.org/desktop/apt/keys.asc | gpg --dearmor > signal-desktop-keyring.gpg
 cat signal-desktop-keyring.gpg | sudo tee -a /usr/share/keyrings/signal-desktop-keyring.gpg > /dev/null
diff --git a/installSpotify.sh b/installSpotify.sh
index 28cece5..e18382e 100644
--- a/installSpotify.sh
+++ b/installSpotify.sh
@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 # We make sure that Snap and flatpak versions are uninstalled
 sudo snap remove spotify 2> /dev/null
 sudo flatpak uninstall com.spotify.Client 2> /dev/null
@@ -11,11 +13,11 @@ echo -e "\nSpotify installed!"
 
 # We install the prerequisites to build and install the patch (Git and Rust will be installed and not removed)
 sudo apt install git make build-essential -y
-which rustc &> /dev/null || wget -q --show-progress https://git.kennel.ml/Anri/myLinuxConfiguration/raw/branch/main/installRust.sh -O - | ( bash; source $HOME/.cargo/env ) # install rust if not already installed
+which rustc &> /dev/null || wget -q --show-progress https://git.kennel.ml/Anri/myLinuxConfiguration/raw/branch/main/installRust.sh -O - | ( bash; source "$HOME"/.cargo/env ) # install rust if not already installed
 
 # Download and build the patch
 git clone https://github.com/abba23/spotify-adblock.git
-cd spotify-adblock
+cd spotify-adblock || exit
 make
 
 # Install the patch
diff --git a/installSyncthing.sh b/installSyncthing.sh
index 7e91338..493b033 100644
--- a/installSyncthing.sh
+++ b/installSyncthing.sh
@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 # We add the official deposit of Syncthing
 which curl &> /dev/null || sudo apt update && sudo apt install curl -y # install curl if not already installed
 sudo curl -s -o /usr/share/keyrings/syncthing-archive-keyring.gpg https://syncthing.net/release-key.gpg
@@ -9,8 +11,8 @@ sudo apt install syncthing -y
 echo -e "\nSyncthing installed!"
 
 # Launch it at startup
-sudo systemctl enable syncthing@$USER.service
-sudo systemctl start syncthing@$USER.service
+sudo systemctl enable syncthing@"$USER".service
+sudo systemctl start syncthing@"$USER".service
 
 # We remove the Ubuntu desktop shortcut only if it already exists
 if [ -f /usr/share/applications/syncthing-start.desktop ]
diff --git a/installTLDR.sh b/installTLDR.sh
index 4856ebb..81728a0 100644
--- a/installTLDR.sh
+++ b/installTLDR.sh
@@ -1,5 +1,7 @@
+#!/usr/bin/env bash
+
 # Install Rust if not already installed
-which rustc &> /dev/null || wget -q --show-progress https://git.kennel.ml/Anri/myLinuxConfiguration/raw/branch/main/installRust.sh -O - | ( bash; source $HOME/.cargo/env )
+which rustc &> /dev/null || wget -q --show-progress https://git.kennel.ml/Anri/myLinuxConfiguration/raw/branch/main/installRust.sh -O - | ( bash; source "$HOME"/.cargo/env )
 
 # Install tldr
 cargo install tealdeer
@@ -11,7 +13,7 @@ tldr --update
 # Download the file from the latest release...
 latest=$(wget -qO- https://api.github.com/repos/dbrgn/tealdeer/releases/latest)
 url=$(grep 'browser_download_url": ".*/completions_fish"' <<< "$latest" | awk '{ print substr ($0, 32 ) }' | awk '{ print substr( $0, 1, length($0)-1 ) }')
-wget -q --show-progress $url -O completions_fish
+wget -q --show-progress "$url" -O completions_fish
 
 # Move it to his correct location
 mv completions_fish ~/.config/fish/completions/tldr.fish
diff --git a/installgl4D.sh b/installgl4D.sh
index 7778ec4..de1aefa 100644
--- a/installgl4D.sh
+++ b/installgl4D.sh
@@ -1,10 +1,12 @@
+#!/usr/bin/env bash
+
 # Installing depedencies
 sudo apt update
 sudo apt install libsdl2-dev libsdl2-image-dev git pkg-config automake make autoconf libtool -y
 
 # Downloading and building GL4D
 git clone https://github.com/noalien/GL4Dummies.git
-cd GL4Dummies
+cd GL4Dummies || exit
 make -f Makefile.autotools
 ./configure
 make
@@ -23,30 +25,30 @@ sudo ldconfig
 # To correct locations to all the shell installed
 
 # To .bashrc if exists
-if [ -f $HOME/.bashrc ] ; then
-    echo "" >> $HOME/.bashrc
-    echo "# GL4Dummies" >> $HOME/.bashrc
-    echo "export PATH=\$PATH:\$HOME/local/bin" >> $HOME/.bashrc
-    echo "export LD_LIBRARY_PATH=\$LD_LIBRARY_PATH:\$HOME/local/lib" >> $HOME/.bashrc
-    echo "" >> $HOME/.bashrc
+if [ -f "$HOME"/.bashrc ] ; then
+    echo "" >> "$HOME"/.bashrc
+    echo "# GL4Dummies" >> "$HOME"/.bashrc
+    echo "export PATH=\$PATH:\$HOME/local/bin" >> "$HOME"/.bashrc
+    echo "export LD_LIBRARY_PATH=\$LD_LIBRARY_PATH:\$HOME/local/lib" >> "$HOME"/.bashrc
+    echo "" >> "$HOME"/.bashrc
 fi
 
 # To .zshrc if exists
-if [ -f $HOME/.zshrc ] ; then
-    echo "" >> $HOME/.zshrc
-    echo "# GL4Dummies" >> $HOME/.zshrc
-    echo "export PATH=\$PATH:\$HOME/local/bin" >> $HOME/.zshrc
-    echo "export LD_LIBRARY_PATH=\$LD_LIBRARY_PATH:\$HOME/local/lib" >> $HOME/.zshrc
-    echo "" >> $HOME/.zshrc
+if [ -f "$HOME"/.zshrc ] ; then
+    echo "" >> "$HOME"/.zshrc
+    echo "# GL4Dummies" >> "$HOME"/.zshrc
+    echo "export PATH=\$PATH:\$HOME/local/bin" >> "$HOME"/.zshrc
+    echo "export LD_LIBRARY_PATH=\$LD_LIBRARY_PATH:\$HOME/local/lib" >> "$HOME"/.zshrc
+    echo "" >> "$HOME"/.zshrc
 fi
 
 # If config.fish exists
-if [ -f $HOME/.config/fish/config.fish ] ; then
-    echo "" >> $HOME/.config/fish/config.fish
-    echo "# GL4Dummies" >> $HOME/.config/fish/config.fish
-    echo "set -gx PATH \$HOME/local/bin \$PATH" >> $HOME/.config/fish/config.fish
-    echo "set -gx LD_LIBRARY_PATH \$HOME/local/lib $LD_LIBRARY_PATH" >> $HOME/.config/fish/config.fish
-    echo "" >> $HOME/.config/fish/config.fish
+if [ -f "$HOME"/.config/fish/config.fish ] ; then
+    echo "" >> "$HOME"/.config/fish/config.fish
+    echo "# GL4Dummies" >> "$HOME"/.config/fish/config.fish
+    echo "set -gx PATH \$HOME/local/bin \$PATH" >> "$HOME"/.config/fish/config.fish
+    echo "set -gx LD_LIBRARY_PATH \$HOME/local/lib $LD_LIBRARY_PATH" >> "$HOME"/.config/fish/config.fish
+    echo "" >> "$HOME"/.config/fish/config.fish
 fi
 
 echo -e "\nGL4D library installed! 🎉"
diff --git a/removeBannerSpotify.sh b/removeBannerSpotify.sh
index 467c18a..fded407 100644
--- a/removeBannerSpotify.sh
+++ b/removeBannerSpotify.sh
@@ -1,4 +1,6 @@
-cd $(dirname $(realpath -L $(which spotify)))/Apps/ # absolute path to Spotify
+#!/usr/bin/env bash
+
+cd "$(dirname "$(realpath -L "$(which spotify)")")"/Apps/ || exit # absolute path to Spotify
 
 sudo cp xpui.spa xpui.spa_bak  # create a backup, in case of trouble
 sudo bash -c "unzip -p xpui.spa xpui.js | sed 's/{adsEnabled:\!0}/{adsEnabled:false}/' > xpui.js"
diff --git a/ubuntuConfiguration.sh b/ubuntuConfiguration.sh
index 283c357..528e601 100644
--- a/ubuntuConfiguration.sh
+++ b/ubuntuConfiguration.sh
@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 # Nautilus
 # Fetching customs keyboard shortcuts
 CUSTOM_KEYBINDINGS_LIST=$(gsettings get org.gnome.settings-daemon.plugins.media-keys custom-keybindings)
@@ -48,11 +50,11 @@ pathicons='/usr/share/applications'
 apps=("debian-xterm" "debian-uxterm" "software-properties-drivers" "software-properties-livepatch")
 
 # We remove the Ubuntu desktop shortcut only if it already exists
-for app in ${apps[@]}
+for app in "${apps[@]}"
 do
-    if [ -f $pathicons/$app.desktop ]
+    if [ -f $pathicons/"$app".desktop ]
     then
-        sudo mv $pathicons/$app.desktop $pathicons/$app.desktop.bak
+        sudo mv $pathicons/"$app".desktop $pathicons/"$app".desktop.bak
         echo "$app's icon removed!"
     fi
 done
diff --git a/update.sh b/update.sh
index ba8b35a..32a5434 100644
--- a/update.sh
+++ b/update.sh
@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 if grep "Ubuntu" /proc/version > /dev/null || grep "WSL" /proc/version > /dev/null;
 then
     # Update Java