I am now writing a small bash script that updates an Intel NIC driver to the latest version from the official website. Is there any way to improve\simplify the script? I want to avoid a lot of "if...else" stuff. Helpful tips will be appreciated!

#! /bin/bash

DRV_PKG_NAME="e1000e-3.0.4.tar.gz"
DRV_PKG_URL="http://downloadmirror.intel.com/15817/eng/e1000e-3.0.4.tar.gz"

# Downloading driver and extracting it to current directory
echo "Downloading and extracting driver..."

if wget -q ${DRV_PKG_URL} && tar zxvf ${DRV_PKG_NAME} >/dev/null ; then
    echo "Done!"
else
    exit 1
fi

# Installing required build dependencies if neccessary
echo "Installing build dependencies..."

if apt-get install -y build-essential linux-headers-$(uname -r) >/dev/null ; then
    echo "Done!"
else
    exit 1
fi

# Going into the driver source directory
cd e1000e-3.0.4/src/ 

# Building driver and updating initramfs
echo "Building module and updating initramfs..."

if { make install && update-initramfs -k all -u; } >/dev/null ; then
    echo "Done!"
else
    exit 1
fi  

echo "Purging unneccessary build deps..."

if apt-get -y purge build-essential >/dev/null ; then
    echo "Done!"
else
    exit 1
fi

# Restarting iface
echo "Restarting iface!"

{ ifdown eth0  && ifup eth0; } &>/dev/null

# Checking installed driver version
if [[ $(modinfo -F version e1000e) == "3.0.4-NAPI" ]] ; then
    echo "Driver succesfully installed!"
    exit 0
else 
    echo "Something Wrong...Try to re-install!"
    exit 1
fi

I am now writing a small bash script that updates an Intel NIC driver to the latest version from the official website. Is there any way to improve\simplify the script? I want to avoid a lot of "if...else" stuff. Helpful tips will be appreciated!

#! /bin/bash

DRV_PKG_NAME="e1000e-3.0.4.tar.gz"
DRV_PKG_URL="http://downloadmirror.intel.com/15817/eng/e1000e-3.0.4.tar.gz"

# Downloading driver and extracting it to current directory
echo "Downloading and extracting driver package..."

if wget -q ${DRV_PKG_URL} && tar zxvf ${DRV_PKG_NAME} >/dev/null ; then
    echo "Done!"
else
    exit 1
fi

# Installing required build dependencies if necessary
echo "Installing build dependencies..."

if apt-get install -y build-essential linux-headers-$(uname -r) >/dev/null ; then
    echo "Done!"
else
    exit 1
fi

# Going into the driver source directory
cd e1000e-3.0.4/src/ 

# Building driver and updating initramfs
echo "Building module and updating initramfs..."

if { make install && update-initramfs -k all -u; } >/dev/null ; then
    echo "Done!"
else
    exit 1
fi  

echo "Purging unnecessary build dependencies..."

if apt-get -y purge build-essential >/dev/null ; then
    echo "Done!"
else
    exit 1
fi

# Restarting iface
echo "Restarting iface!"

{ ifdown eth0  && ifup eth0; } &>/dev/null

# Checking installed driver version
if [[ $(modinfo -F version e1000e) == "3.0.4-NAPI" ]] ; then
    echo "Driver succesfully installed!"
    exit 0
else 
    echo "Something Wrong...Try to re-install!"
    exit 1
fi

I am writing now small bash script, that updates Intel NIC driver to the latest version from the official website. Is there any way to improve\simplify the script? I want to avoid a lot of "if...else" stuff. Helpful tips will be appreciated!

#! /bin/bash

DRV_PKG_NAME="e1000e-3.0.4.tar.gz"
DRV_PKG_URL="http://downloadmirror.intel.com/15817/eng/e1000e-3.0.4.tar.gz"

# Downloading driver and extracting it to current directory
echo "Downloading and extracting driver..."

if wget -q ${DRV_PKG_URL} && tar zxvf ${DRV_PKG_NAME} >/dev/null ; then
    echo "Done!"
else
    exit 1
fi

# Installing required build dependencies if neccessary
echo "Installing build dependencies..."

if apt-get install -y build-essential linux-headers-$(uname -r) >/dev/null ; then
    echo "Done!"
else
    exit 1
fi

# Going into the driver source directory
cd e1000e-3.0.4/src/ 

# Building driver and updating initramfs
echo "Building module and updating initramfs..."

if { make install && update-initramfs -k all -u; } >/dev/null ; then
    echo "Done!"
else
    exit 1
fi  

echo "Purging unneccessary build deps..."

if apt-get -y purge build-essential >/dev/null ; then
    echo "Done!"
else
    exit 1
fi

# Restarting iface
echo "Restarting iface!"

{ ifdown eth0  && ifup eth0; } &>/dev/null

# Checking installed driver version
if [[ $(modinfo -F version e1000e) == "3.0.4-NAPI" ]] ; then
    echo "Driver succesfully installed!"
    exit 0
else 
    echo "Something Wrong...Try to re-install!"
    exit 1
fi

I am now writing a small bash script that updates an Intel NIC driver to the latest version from the official website. Is there any way to improve\simplify the script? I want to avoid a lot of "if...else" stuff. Helpful tips will be appreciated!

#! /bin/bash

DRV_PKG_NAME="e1000e-3.0.4.tar.gz"
DRV_PKG_URL="http://downloadmirror.intel.com/15817/eng/e1000e-3.0.4.tar.gz"

# Downloading driver and extracting it to current directory
echo "Downloading and extracting driver..."

if wget -q ${DRV_PKG_URL} && tar zxvf ${DRV_PKG_NAME} >/dev/null ; then
    echo "Done!"
else
    exit 1
fi

# Installing required build dependencies if neccessary
echo "Installing build dependencies..."

if apt-get install -y build-essential linux-headers-$(uname -r) >/dev/null ; then
    echo "Done!"
else
    exit 1
fi

# Going into the driver source directory
cd e1000e-3.0.4/src/ 

# Building driver and updating initramfs
echo "Building module and updating initramfs..."

if { make install && update-initramfs -k all -u; } >/dev/null ; then
    echo "Done!"
else
    exit 1
fi  

echo "Purging unneccessary build deps..."

if apt-get -y purge build-essential >/dev/null ; then
    echo "Done!"
else
    exit 1
fi

# Restarting iface
echo "Restarting iface!"

{ ifdown eth0  && ifup eth0; } &>/dev/null

# Checking installed driver version
if [[ $(modinfo -F version e1000e) == "3.0.4-NAPI" ]] ; then
    echo "Driver succesfully installed!"
    exit 0
else 
    echo "Something Wrong...Try to re-install!"
    exit 1
fi