diff --git a/install.sh b/install.sh
index 38c8a37..94eed65 100755
--- a/install.sh
+++ b/install.sh
@@ -12,6 +12,8 @@ echo "    Installing lch"
 echo "======================"
 echo ""
 cp lch /usr/bin/lch
+mkdir -p /usr/lib/lch
+cp ./lib/* /usr/lib/lch
 chmod 755 /usr/bin/lch
 echo " Copied lch in /usr/bin"
 
diff --git a/lch b/lch
index b5eab4d..439ed04 100755
--- a/lch
+++ b/lch
@@ -4,85 +4,9 @@ DEST=$1
 shift 1
 ORIG=$@
 
-function decompressor()
-{
-    case $DEST in
-        *.tar)
-            tar -xvf $DEST
-        ;;
-        *.tar.gz | *.tgz)
-            tar -xzvf $DEST
-        ;;
-        *.tar.bz2 | *.tbz | *.tbz2 | *.tb2)
-            tar xjf $DEST
-        ;;
-        *.tar.xz | *.txz)
-            tar -xf $DEST
-        ;;
-        *.bz2)
-            bzip2 -d $DEST
-        ;;
-        *.gz)
-            gzip -d $DEST
-        ;;
-        *.zip)
-            unzip $DEST
-        ;;
-        *.7z)
-            7za e $DEST
-        ;;
-        *.rar)
-            unrar x $DEST
-        ;;
-        *)
-            echo "Extension not found."
-            echo -e "For more information run 'lch --help'\n"
-        ;;
-    esac
-    
-    echo -e "\nDone"
-    exit 0
-}
-
-function compressor()
-{    
-    case $DEST in
-        *.tar)
-            tar -cvf $DEST $ORIG
-        ;;
-        *.tar.gz | *.tgz)
-            tar -czvf $DEST $ORIG
-        ;;
-        *.tar.bz2 | *.tbz | *.tbz2 | *.tb2)
-            tar -c $ORIG | bzip2 > $DEST
-        ;;
-        *.tar.xz | *.txz)
-            tar -cJf $DEST $ORIG
-        ;;
-        *.bz2)
-            bzip2 -c $ORIG > $DEST
-        ;;
-        *.gz)
-            gzip -c $ORIG > $DEST
-        ;;
-        *.zip)
-            zip -r $DEST $ORIG
-        ;;
-        *.7z)
-            7za a $DEST $ORIG
-        ;;
-        *.rar)
-            rar a $DEST $ORIG
-        ;;
-        *)
-            echo "Extension not found."
-            echo -e "For more information run 'lch --help'\n"
-        ;;
-    esac
-    
-    echo -e "\nDone"
-    exit 0
-}
+source /usr/lib/lch/compressor.sh || source ./lib/compressor.sh
+source /usr/lib/lch/decompressor.sh || source ./lib/decompressor.sh
+source /usr/lib/lch/check.sh || source ./lib/check.sh
 
 function help()
 {
@@ -107,103 +31,6 @@ function help()
     echo ""
 }
 
-function check()
-{
-    local a=false
-    echo -e "Verification of compression systems:\n"
-    echo -e "Systems\t\t\tStatus"
-    echo "----------------------------------"
-    for i in "rar" "unrar" "tar" "bzip2" "gzip" "zip" "7za"
-    do
-        if ! [ -x "$(command -v $i)" ]
-        then
-            echo -e "$i\t\t\t\e[91mNot Installed\e[0m"
-            $a = true
-        else
-            echo -e "$i\t\t\t\e[32mInstalled\e[0m"
-        fi
-    done
-
-    if $a
-    then
-        echo -e "\nIn order to use all the extensions install the packages: tar, bzip2, gzip, zip, 7za, rar, unrar"
-    fi
-    echo ""
-    exit 0
-}
-
-function rarInstall(){
-
-    if [[ $(uname -m) -eq "x86_64" ]]
-    then
-        RAR_URL="https://www.rarlab.com/rar/rarlinux-x64-5.9.1.tar.gz"
-        RAR_FILE="rarlinux-x64-5.9.1.tar.gz"
-    else
-        RAR_URL="https://www.rarlab.com/rar/rarlinux-5.9.1.tar.gz"
-        RAR_FILE="rarlinux-5.9.1.tar.gz"
-    fi
-    wget $RAR_URL 
-    tar -zxvf $RAR_FILE
-    cd rar
-    cp -v rar unrar /usr/local/bin/
-    cd ..
-    rm -r rar $RAR_FILE
-    echo "rar/unrar installed."
-}
-
-function install()
-{
-    echo -e "Install dependencies\n"
-
-    if [ "$UID" != "0" ]; then 
-        echo " Only root can execute this script, sorry."
-        echo " Try 'sudo $0 $DEST'"
-        exit 0
-    fi
-    
-    if [ -e "$(command -v rar)" ]
-    then
-        echo "rar installed."
-    else
-        rarInstall
-    fi
-        
-    if [ -x "$(command -v apt)" ]
-    then
-        echo -e "APT system detected\n"
-        apt install -y tar bzip2 gzip zip p7zip-full 1> /dev/null
-    elif [ -n "$(grep "centos" /etc/*-release)" ]
-    then
-        echo -e "CentOS system detected\n"
-        yum install -y -q epel-release 1> /dev/null
-        rpm -U --quiet http://mirrors.kernel.org/fedora-epel/6/i386/epel-release-6-8.noarch.rpm 1> /dev/null
-        rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-6 1> /dev/null
-        yum repolist 1> /dev/null
-        yum install -y -q tar bzip2 gzip zip p7zip 1> /dev/null
-    elif [ -x "$(command -v dnf)" ]
-    then
-        echo -e "DNF system detected\n"
-        dnf install -y -q tar bzip2 gzip zip p7zip 1> /dev/null
-    elif [ -x "$(command -v yum)" ]
-    then
-        echo -e "Yum system detected\n"
-        yum install -y -q tar bzip2 gzip zip p7zip 1> /dev/null
-    elif [ -x "$(command -v pacman)" ]
-    then
-        echo -e "Pacman system detected\n"
-        pacman -Sqy --noconfirm tar bzip2 gzip zip p7zip 1> /dev/null
-    elif [ -x "$(command -v zypper)" ]
-    then
-        echo -e "Zypper system detected\n"
-        zypper install -y tar bzip2 gzip zip p7zip-full 1> /dev/null
-    else
-        echo -e "System installer not detected\n"
-    fi
-
-    echo -e "\nDependencies installation finished\n"
-    exit 0
-}
-
 if [ "$DEST" = "--help" ] || [ "$DEST" = "-h" ]
 then
     help
diff --git a/lib/check.sh b/lib/check.sh
new file mode 100644
index 0000000..620d66a
--- /dev/null
+++ b/lib/check.sh
@@ -0,0 +1,97 @@
+#!/bin/bash
+function check()
+{
+    local a=false
+    echo -e "Verification of compression systems:\n"
+    echo -e "Systems\t\t\tStatus"
+    echo "----------------------------------"
+    for i in "rar" "unrar" "tar" "bzip2" "gzip" "zip" "7za"
+    do
+        if ! [ -x "$(command -v $i)" ]
+        then
+            echo -e "$i\t\t\t\e[91mNot Installed\e[0m"
+            $a = true
+        else
+            echo -e "$i\t\t\t\e[32mInstalled\e[0m"
+        fi
+    done
+
+    if $a
+    then
+        echo -e "\nIn order to use all the extensions install the packages: tar, bzip2, gzip, zip, 7za, rar, unrar"
+    fi
+    echo ""
+    exit 0
+}
+
+function rarInstall(){
+
+    if [[ $(uname -m) -eq "x86_64" ]]
+    then
+        RAR_URL="https://www.rarlab.com/rar/rarlinux-x64-5.9.1.tar.gz"
+        RAR_FILE="rarlinux-x64-5.9.1.tar.gz"
+    else
+        RAR_URL="https://www.rarlab.com/rar/rarlinux-5.9.1.tar.gz"
+        RAR_FILE="rarlinux-5.9.1.tar.gz"
+    fi
+    wget $RAR_URL 
+    tar -zxvf $RAR_FILE
+    cd rar
+    cp -v rar unrar /usr/local/bin/
+    cd ..
+    rm -r rar $RAR_FILE
+    echo "rar/unrar installed."
+}
+
+function install()
+{
+    echo -e "Install dependencies\n"
+
+    if [ "$UID" != "0" ]; then 
+        echo " Only root can execute this script, sorry."
+        echo " Try 'sudo $0 $DEST'"
+        exit 0
+    fi
+    
+    if [ -e "$(command -v rar)" ]
+    then
+        echo "rar installed."
+    else
+        rarInstall
+    fi
+        
+    if [ -x "$(command -v apt)" ]
+    then
+        echo -e "APT system detected\n"
+        apt install -y tar bzip2 gzip zip p7zip-full 1> /dev/null
+    elif [ -n "$(grep "centos" /etc/*-release)" ]
+    then
+        echo -e "CentOS system detected\n"
+        yum install -y -q epel-release 1> /dev/null
+        rpm -U --quiet http://mirrors.kernel.org/fedora-epel/6/i386/epel-release-6-8.noarch.rpm 1> /dev/null
+        rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-6 1> /dev/null
+        yum repolist 1> /dev/null
+        yum install -y -q tar bzip2 gzip zip p7zip 1> /dev/null
+    elif [ -x "$(command -v dnf)" ]
+    then
+        echo -e "DNF system detected\n"
+        dnf install -y -q tar bzip2 gzip zip p7zip 1> /dev/null
+    elif [ -x "$(command -v yum)" ]
+    then
+        echo -e "Yum system detected\n"
+        yum install -y -q tar bzip2 gzip zip p7zip 1> /dev/null
+    elif [ -x "$(command -v pacman)" ]
+    then
+        echo -e "Pacman system detected\n"
+        pacman -Sqy --noconfirm tar bzip2 gzip zip p7zip 1> /dev/null
+    elif [ -x "$(command -v zypper)" ]
+    then
+        echo -e "Zypper system detected\n"
+        zypper install -y tar bzip2 gzip zip p7zip-full 1> /dev/null
+    else
+        echo -e "System installer not detected\n"
+    fi
+
+    echo -e "\nDependencies installation finished\n"
+    exit 0
+}
\ No newline at end of file
diff --git a/lib/compressor.sh b/lib/compressor.sh
new file mode 100644
index 0000000..cddfe8a
--- /dev/null
+++ b/lib/compressor.sh
@@ -0,0 +1,40 @@
+#!/bin/bash
+function compressor()
+{    
+    case $1 in
+        *.tar)
+            tar -cvf $1 $2
+        ;;
+        *.tar.gz | *.tgz)
+            tar -czvf $1 $2
+        ;;
+        *.tar.bz2 | *.tbz | *.tbz2 | *.tb2)
+            tar -c $2 | bzip2 > $1
+        ;;
+        *.tar.xz | *.txz)
+            tar -cJf $1 $2
+        ;;
+        *.bz2)
+            bzip2 -c $2 > $1
+        ;;
+        *.gz)
+            gzip -c $2 > $1
+        ;;
+        *.zip)
+            zip -r $1 $2
+        ;;
+        *.7z)
+            7za a $1 $2
+        ;;
+        *.rar)
+            rar a $1 $2
+        ;;
+        *)
+            echo "Extension not found."
+            echo -e "For more information run 'lch --help'\n"
+        ;;
+    esac
+    
+    echo -e "\nDone"
+    exit 0
+}
diff --git a/lib/decompressor.sh b/lib/decompressor.sh
new file mode 100644
index 0000000..c58338c
--- /dev/null
+++ b/lib/decompressor.sh
@@ -0,0 +1,40 @@
+#!/bin/bash
+function decompressor()
+{
+    case $1 in
+        *.tar)
+            tar -xvf $1
+        ;;
+        *.tar.gz | *.tgz)
+            tar -xzvf $1
+        ;;
+        *.tar.bz2 | *.tbz | *.tbz2 | *.tb2)
+            tar xjf $1
+        ;;
+        *.tar.xz | *.txz)
+            tar -xf $1
+        ;;
+        *.bz2)
+            bzip2 -d $1
+        ;;
+        *.gz)
+            gzip -d $1
+        ;;
+        *.zip)
+            unzip $1
+        ;;
+        *.7z)
+            7za e $1
+        ;;
+        *.rar)
+            unrar x $1
+        ;;
+        *)
+            echo "Extension not found."
+            echo -e "For more information run 'lch --help'\n"
+        ;;
+    esac
+    
+    echo -e "\nDone"
+    exit 0
+}
\ No newline at end of file