gentoo_system_update

#!/usr/bin/env bash

# Author : Bhaskar Chowdhury
# Email  : unixbhaskar@gmail.com
# Website: https://unixbhaskar.wordpress.com


# Update portage tree and eix, then bring all packages in @world up-to-date.
# Clean up at the end, ensuring changes to files in /etc are processed.
# Will offer to update the kernel, if a new version has become available.

# License (GPL v2.0)

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.


set -e
set -u
shopt -s nullglob

printf "Hostname: %s\nDate    : %s\nUptime  :%s\n\n"  "$(hostname -s)" "$(date)" "$(uptime)"

# Last repository sync time
echo Last sync to remote repository made on:
echo 
qlop -s | tail -n1 | tr -d "***"

# Syncing with remote repo
 eix-sync

# Update the local repo
 eix-update

# Updating the packager manager itself first, if the update available

emerge --oneshot --update portage

# See if there is any significant news in the in gentoo channel
NEWS=$(eselect news count)
if [ $NEWS -ne 0 ]; then
     eselect news read
else
    notify-send "No news is good news"
fi


# Actually update the system with fetched in packages
emerge  --verbose --update --deep --newuse --with-bdeps=y --exclude net-libs/webkit-gtk --exclude dev-libs/libffi --keep-going @world

if [ $? -eq 0 ];then
	notify-send "System has Updated successfully!"
else
	notify-send "Nope, Update is having trouble, please fix"
	exit 1
fi


# If some of the library needs to be rebuild, then do it
# notify-send "Rebuilding the preserved libraries..."

# emerge @preserved-rebuild

# if [ $? -ne 0 ];then
# 	notify-send "Trouble rebuilding preserve libraries."
# else
# 	:
# fi


# Showing what are the packages merge in local system today
genlop --list --date today

# Clean the stale log of previous merge
find /var/log/portage -maxdepth 1 -type f -ls -delete

# Clean the distribution directory to gain disk space
eclean-dist --deep

# It is a custom to rip away the stale stuff from the system after world merge.
notify-send "Running depclean, please be attentive..."
emerge --ask --depclean

# Check for security vulnerability by scanning local installed packages.
glsa-check -f --verbose all  &&  glsa-check -l --verbose all

# System checks for sanity

echo ":: Checking file system root size"
df -h | grep "/$"
echo ":: Checking package file size too"
du -shc "/var/cache/distfiles" | head -1
echo ":: Checking the world file..."
emaint world