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init.sh/lib/version.sh

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# ------------------------------------------------------------------------------
# Version determination function
# This file is part of the init.sh project
# Copyright (c) 2019-2021 Geoffray Levasseur <fatalerrors@geoffray-levasseur.org>
# ------------------------------------------------------------------------------
# This file is distributed under 3-clause BSD license.
# The complete license agreement can be obtained at:
# https://opensource.org/licenses/BSD-3-Clause
# ------------------------------------------------------------------------------
# ------------------------------------------------------------------------------
# Return on stdout $distro $version $codename
read_os_release()
{
if [[ ! -f /etc/os-release ]]; then
prnt E "Your distribution doesn't have the needed os-release file."
die 8 --force
fi
# Create a sub-shell to avoid polluting the environnement
(
# Iniitalise version codename in case the var don't exists
VERSION_CODENAME="NULL"
# Import the file in the environment
source /etc/os-release
if [[ -z $ID ]]; then
prnt E "Your /etc/os-release file mises some vital information."
die --force 8
fi
if [[ -z $VERSION_ID ]]; then
local maj=$(uname -r | cut -d'.' -f1)
local min=$(uname -r | cut -d'.' -f2)
VERSION_ID="$maj.$min"
unset maj min
fi
# Return values on standard stdout
echo ${ID,,} ${VERSION_ID} ${VERSION_CODENAME,,}
)
}
export read_os_release
# ------------------------------------------------------------------------------
# Create system related variables
# ------------------------------------------------------------------------------
get_os_version()
{
if [[ $# -ne 3 ]]; then
prnt E "get_os_version(): incorect number of parameters ($@)."
die 7 --force
fi
export SYS_DIST=$1
export SYS_VER=$2
if [[ $3 != "null" ]]; then
export SYS_CODE=$3
fi
}
export -f get_os_version
# EOF