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52 lines
1.2 KiB
52 lines
1.2 KiB
#!/usr/bin/env bash
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## CONSTANTS
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## FUNCTIONS
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function upgrade {
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echo "UPGRADE: $*"
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if sudo -E "$MIAOU_BASH_DIR"/bin/miaou-bash "$MIAOU_BASH_DIR"/none.sh 3>&1; then
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:
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else
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code=$?
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echo "FAILURE exit_code=$code"
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fi
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}
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function assert_supported_distro {
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if ! grep -E '^ID=debian|^ID_LIKE=debian' /etc/os-release &&
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! grep -E '^ID=arch|^ID_LIKE=arch' /etc/os-release; then
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local distro
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distro=$(grep -oP '^ID=\K(.*)' /etc/os-release)
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>&2 echo "unsupported GNU/Linux distribution: $distro"
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>&2 echo 'only debian-like OR arch-like currently supported'
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return 10
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fi
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}
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function assert_bash {
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if [[ $(basename "$SHELL") != 'bash' ]]; then
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>&2 echo "MIAOU ERROR: you are running on SHELL=$SHELL rather than 'bash'!"
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return 11
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fi
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}
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function sudo_root {
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if [[ "$UID" -ne 0 ]] && ! sudo -vp 'SUDO privilege required: '; then
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>&2 echo "canceled"
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return 12
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fi
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}
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## MAIN
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set -Eeuo pipefail
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if assert_supported_distro && assert_bash && sudo_root; then
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if [[ ! -v MIAOU_BASH_DIR ]]; then
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MIAOU_BASH_DIR=/opt/miaou-bash
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export MIAOU_BASH_DIR
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fi
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upgrade "$@"
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else
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>&2 echo "MIAOU_BASH_ERROR: requirements failure"
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fi
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