Basic startup script for a cloned raspi

# ~/.profile: executed by the command interpreter for login shells.
# This file is not read by bash(1), if ~/.bash_profile or ~/.bash_login
# exists.
# see /usr/share/doc/bash/examples/startup-files for examples.
# the files are located in the bash-doc package.

# the default umask is set in /etc/profile; for setting the umask
# for ssh logins, install and configure the libpam-umask package.
#umask 022

# if running bash
if [ -n "$BASH_VERSION" ]; then
    # include .bashrc if it exists
    if [ -f "$HOME/.bashrc" ]; then
        . "$HOME/.bashrc"
    fi
fi

rebootFlg="reboot.flg"
expandFlg="expand.flg"

# set PATH so it includes user's private bin if it exists
if [ -d "$HOME/bin" ] ; then
    PATH="$HOME/bin:$PATH"
fi

# Check ram dedicated to the GPU
if ! grep -q "gpu_mem=128" "/boot/config.txt"; then
    echo "Changing GPU ram"
    sed '/gpu_mem/d' /boot/config.txt | sudo tee /boot/config.txt > /dev/null
    echo "gpu_mem=128" | sudo tee -a /boot/config.txt > /dev/null
    touch "$rebootFlg"
fi

# Timezone
if ! cmp --silent /usr/share/zoneinfo/Europe/Lisbon /etc/localtime; then
  sudo cp /usr/share/zoneinfo/Europe/Lisbon /etc/localtime
  echo Changing timezone
  touch "$rebootFlg"
fi

# if the flag is present, expand the file system
# resizefs.sh extracted from raspi-config
if [ -f "$expandFlg" ]; then
    echo "Expanding card"
    chmod +x ~/Desktop/raspi/resizefs.sh
    sudo ~/Desktop/raspi/resizefs.sh
    touch "$rebootFlg"
    rm "$expandFlg"
fi

# Check serial number
PISERIAL="PI-"`cat /proc/cpuinfo | grep Serial |awk '{gsub ("^0*", "", $3); print $3}'`
if grep -q $PISERIAL "/etc/hostname"; then
    echo "Host:" $PISERIAL
else
    echo "Changing host"
    echo $PISERIAL | sudo tee /etc/hostname > /dev/null
    sed '/127.0.1.1/d' /etc/hosts | sudo tee /etc/hosts > /dev/null
    echo 127.0.1.1 $PISERIAL | sudo tee -a /etc/hosts > /dev/null
    touch "$rebootFlg"
fi

# restarts system if required
if [ -f "$rebootFlg" ]; then
    rm "$rebootFlg"
    sudo reboot
fi

# Check if session is local or remote
if [[ $(who am i) =~ \([-a-zA-Z0-9\.]+\)$ ]] ; then
    echo Conected by SSH;
    sudo python ~/Desktop/raspi/cfgmenu.py
else
    echo Starting signage system
    echo Press any key to change settings
    if read -n1 -t5 -r -s x; then
       sudo python ~/Desktop/raspi/cfgmenu.py
       sudo reboot
    else
       echo Checking for updates
       cd ~/Desktop/raspi/
       # the update script will start the presentation or restart on completion
       python ./update.py 2>>log.txt
    fi
fi