taqemualpinex86.bash

#!/usr/bin/env bash
## copyright 2020 (c) by SDRausty, all rights reserved, see LICENSE
## hosting termuxarch.github.io/TermuxArch courtesy pages.github.com
## https://termuxarch.github.io/TermuxArch/CONTRIBUTORS thank you for helping
################################################################################
set -eu
declare X86REALEASE
declare X86REALEASESHA
_INST_() {	# check for wanted commands
COMMS="$1"
STRING1="COMMAND 'au' enables rollback, available at https://wae.github.io/au/ IS NOT FOUND: Continuing... "
STRING2="Cannot update ~/${0##*/} prerequisite: Continuing..."
COMMANDR="$(command -v au)" || (printf "%s\\n\\n" "$STRING1")
COMMANDIF="${COMMANDR##*/}"
PKG="$2"
_INPKGS_() {
printf "%s\\n" "Beginning qemu 'qemu-system-i386' setup:"
if [ "$COMMANDIF" = au ]
then
au "$PKG" || printf "%s\\n" "$STRING2"
else
apt install "$PKG" || printf "%s\\n" "$STRING2"
fi
}
if ! command -v "$COMMS"
then
_INPKGS_
fi
}
_BOOTISO_() {
printf "%s\\n\\n" "To exit the QEMU session, please use the 'CTRL+a x' keys;  Sleeping 4 seconds... "
sleep 4
printf "%s\\n\\n" "Please be patient as file '$X86REALEASE' is booting;  Feel free to work at a new Termux session while this session completes its task.  To exit the QEMU session, please use the 'CTRL+a x' keys;  Sleeping 8 seconds... "
sleep 8
qemu-system-i386 -m 512M -nographic -cdrom "$1"
}
_PSGI1ESTRING_() {	# print signal generated in arg 1 format
printf "\\e[1;33mSIGNAL GENERATED in %s\\e[1;34m : \\e[1;32mCONTINUING...  \\e[0;34mShould better solutions for \\e[0;32m%s\\e[0;34m be found, please open an issue and accompanying pull request if possible.\\e[0m\\n" "'$1'" "'${0##*/} ${@:-}'"
}
## begin ##
[ ! -d "$HOME/tmp/" ] && printf "\\e[0;34mCreating directory \\e[0;32m%s\\e[0;34m.\\e[0m\\n" "'$HOME/tmp/'" && mkdir -p "$HOME/tmp/"
[ -d "$HOME/tmp/" ] && cd "$HOME/tmp/" || _PSGI1ESTRING_ " cd $HOME/tmp/ ${0##*/}"
if ! command -v qemu-system-i386
then
_INST_ qemu-system-i386 qemu-system-i386-headless "${0##*/}" || _PSGI1ESTRING_ "_INST_ qemu-system-i386 ${0##*/}"
fi
[ -f alpinev3.12releasesx86 ] && printf "%s\\n\\n" "Found alpinev3.12releasesx86 file." || (printf "%s\\n\\n" "Downloading index into alpinev3.12releasesx86 file from https://dl-cdn.alpinelinux.org." && curl -0 https://dl-cdn.alpinelinux.org/alpine/v3.12/releases/x86/ -o alpinev3.12releasesx86)
X86REALEASESHA="$(sed -n '/^$/!{s/<[^>]*>//g;p;}' alpinev3.12releasesx86 | awk '/virt/' | awk '/sha512/' | awk 'END{print}'|  awk '{print$1}')"
[ -f "$X86REALEASESHA" ] && printf "%s\\n\\n" "Found $X86REALEASESHA file." || (printf "%s\\n\\n" "Downloading $X86REALEASESHA file from https://dl-cdn.alpinelinux.org." && curl -0 "https://dl-cdn.alpinelinux.org/alpine/v3.12/releases/x86/$X86REALEASESHA" -o "$X86REALEASESHA")
X86REALEASE="$(awk '{print$2}' "$X86REALEASESHA")"
[ -f "$X86REALEASE" ] && printf "%s\\n\\n" "Found $X86REALEASE file." || (printf "%s\\n\\n" "Downloading $X86REALEASE file from https://dl-cdn.alpinelinux.org." && curl -C - --fail --retry 4 -0 "https://dl-cdn.alpinelinux.org/alpine/v3.12/releases/x86/$X86REALEASE" -o "$X86REALEASE")
if [ ! -f "checked$X86REALEASE" ]
then
printf "%s\\n\\n" "Checking file '$X86REALEASE' with sha512sum."
if sha512sum "$X86REALEASESHA"
then
touch "checked$X86REALEASE"
_BOOTISO_ "$X86REALEASE"
else
printf "%s\\n\\n" "Checking file '$X86REALEASE' with sha512sum failed;  Removing files '$X86REALEASE' and '$X86REALEASESHA'."
rm -f "$X86REALEASE" "$X86REALEASESHA"
fi
else
_BOOTISO_ "$X86REALEASE"
fi
# qemualpinex86.bash EOF