GUI Updates script

[Valtam]

Latest iteration:

- Added line 91
- Reverted to original log and first dialogue processes

Code:

#!/bin/bash
#-----------------------------------------------------------------------------------------
# Name: Linux Lite Updates
# Description: A GUI tool to easily install Updates in Linux Lite.
# Authors: Misko_2083, Jerry Bezencon
# Date: February 21st, 2015
# Website: https://www.linuxliteos.com
#-----------------------------------------------------------------------------------------

# Kill off any package managers that may be running
if [ "$(pidof synaptic)" ]
then
   sudo killall -9 synaptic
else
   echo""
fi

if [ -z "$(pgrep gdebi-gtk)" ]
then
   echo ""
else
   killall -9 gdebi-gtk
fi

# Updates log variable
UPDATES=$(mktemp /tmp/updateslist.XXXXXX)

# Linux Lite default dialog icon
ic="/usr/share/icons/zenity-llcc.png"

# Get list of available updated packages then populate them to /tmp/updateslist
zenity --question --title="Linux Lite Updates" --window-icon="/usr/share/icons/zenity-llcc.png" --text="We will now fetch the Updates list.\n\nClick Yes to continue or No to abort."
   if [ "$?" -eq "0" ];then

APTUPDATE=$( stdbuf -oL /bin/bash \-c '(sudo apt-get update \-y )' 2>&1 |
stdbuf -oL sed -n -e 's/^\(.\{128\}\).*/\1/' -e '/\[*$/ s/^/# /p' -e '/\*$/ s/^/# /p' |     #sed 's/^\(.\{128\}\).*/\1/'  Display only the first 128 characters
zenity --progress --title="Updating package information..." --pulsate \
--width=600 --auto-close )

unset APTUPDATE

# Creates a list in /tmp/updateslist
LISTNAMES=$(apt-get --just-print upgrade 2>&1 | perl -ne 'if (/Inst\s([\w,\-,\d,\.,~,:,\+]+)\s\[([\w,\-,\d,\.,~,:,\+]+)\]\s\(([\w,\-,\d,\.,~,:,\+]+)\)? /i) {print "Name: $1 INSTALLED: $2 AVAILABLE: $3\n"}' | awk '{print NR,":\t"$0}' | tee $UPDATES)

# Check if any updates are available, if there are none, script pops up dialog box saying 'No Updates Available', removes /tmp/updateslist.XXXXXX
if [  -z "$(cat $UPDATES)"  ]; then
    zenity --info --window-icon="/usr/share/icons/zenity-llcc.png" --title="Linux Lite Updates" \
      --text="No Updates Available"
   rm $UPDATES
   exit 0
fi

# Insert text into  /tmp/updateslist.XXXXXX
sed -i -e '1 i\List of available Updates' -e '1 i\Click Update to continue or Cancel to stop the update process\n'  $UPDATES

# Erase existing available info
sudo dpkg --clear-avail

  else
       exit 0
  fi

# Call the zenity dialog to show update list
zenity --text-info --ok-label="Update" --cancel-label="Cancel" --title="Linux Lite Updates" --width=780 --height=300 --filename="$UPDATES"
      if [ "$?" -eq "0" ];then
       
      # Continue script if no halt
        INSTALL_ICON="/usr/share/icons/zenity-llcc.png"
        APPNAME="Linux Lite Updates"
       
                 # Remove tmp file
                 rm $UPDATES

    RUNUPDATES=$( stdbuf -oL /bin/bash \-c '(sudo DEBIAN_FRONTEND=noninteractive apt-get  -o Dpkg::Options::="--force-confdef" -o Dpkg::Options::="--force-confold" upgrade \-y )' 2>&1 | tee /var/log/llupdates.log |
       stdbuf -oL sed -n -e 's/^\(.\{128\}\).*/\1/' -e '/\[*$/ s/^/# /p' -e '/\*$/ s/^/# /p' |           
       zenity --progress --title="Updating..." --pulsate \
       --width=600 --auto-close )

                                if [ "${PIPESTATUS[0]}" -ne "0" ]; then
                       
                                        zenity --error \
                                        --title="Error" --text="$APPNAME have failed."
                                        exit 0
                                fi

      # Halt updates script if user selects Cancel
       else
         rm $UPDATES
        unset UPDATES
        unset RUNUPDATES
   zenity --info --title="Updates Cancelled" --window-icon="${INSTALL_ICON}" --text="Updates Cancelled."
         exit 0
    fi

unset UPDATES
unset RUNUPDATES

PROCEED=$(zenity --question --title="$APPNAME" --window-icon=/usr/share/icons/zenity-llcc.png --text="Updates have finished installing.\n\nWould you like to view the $APPNAME log?"; echo $?)
if [ ${PROCEED} -eq 1 ]; then
   zenity --info --title="$APPNAME" --window-icon="${INSTALL_ICON}" --text="$APPNAME Complete."
   exit;
else
   zenity --text-info --ok-label="Quit" --cancel-label="Cancel" --title="Updates Log" --width=700 --height=300 --filename="/var/log/llupdates.log"
fi

exit 0