Attachment 8007 Details for Bug 36048 – Варинт скрипта с опциями и проверкой

Варинт скрипта с опциями и проверкой

grub-entries (text/plain), 3.06 KB, created by Leonid Krivoshein on 2019-02-08 16:41:13 MSK

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Creator: Leonid Krivoshein

Created: 2019-02-08 16:41:13 MSK

Size: 3.06 KB

patch

obsolete

>#!/bin/sh -efu
>### This file is covered by the GNU General Public License
>### version 2 or later.
>###
>### Copyright (C) 2019  ALT Linux Team
>### Author: Leonid Krivoshein <klark@altlinux.org>
>
>numbers_only=0
>titles_only=0
>search_item=
>progname="${0##*/}"
>grubmenu="/boot/grub/grub.cfg"
>
>
>show_help() {
>	cat <<-EOF
>$progname - Show default or specified grub menu.
>
>Usage: $progname [options]
>
>Options:
>  -f, --config=  Specify path to the grub config.
>  -n, --numbers  Show only numbers of the items.
>  -t, --titles   Show only titles of the items.
>  -c, --check=   Specify item name to validate.
>  -V, --version  Show script version and exit.
>  -h, --help     Show this help message and exit.
>EOF
>	exit 0
>}
>
>show_version() {
>	cat <<-EOF
>$progname version 0.9
>Copyright (C) 2019, ALT Linux Team
>EOF
>	exit 0
>}
>
>show_usage() {
>	[ -z "$*" ] || echo "$*" >&2
>	echo "Try '$progname --help' for more information." >&2
>	exit 1
>}
>
>parse_args() {
>	local opts="+f:,n,t,c:,V,h"
>	local longopts="config:,numbers,titles,check:,version,help"
>
>	opts=$(getopt -n "$progname" -o "$opts" -l "$longopts" -- "$@") ||
>		show_usage "Invalid command-line arguments."
>	eval set -- "$opts"
>	while [ $# -gt 0 ]; do
>		case "$1" in
>		-f|--config)	shift; grubmenu="$1";;
>		-n|--numbers)	numbers_only=1; titles_only=0;;
>		-t|--titles)	numbers_only=0; titles_only=1;;
>		-c|--check)	shift; search_item="$1";;
>		-V|--version)	show_version;;
>		-h|--help)	show_help;;
>		--)		shift; break;;
>		-*)		show_usage "Unrecognized option: '$1'";;
>		*)		break;;
>		esac
>		shift
>	done
>	[ $# -eq 0 ] || show_usage "To many arguments: '$*'"
>}
>
>show_menu() {
>	local mode title number prefix entry=0 itemno=0
>
>	cat "$grubmenu" | sed \
>		-re '/^\s*(menuentry\s+|submenu\s+|})/!d' \
>		-re "s/^\s*menuentry\s+'([^']+)'.*\$/M\t\1/g" \
>		-re 's/^\s*menuentry\s+"([^"]+)".*$/M\t\1/g' \
>		-re "s/^\s*submenu\s+'([^']+)'.*\$/S\t\1/g" \
>		-re 's/^\s*submenu\s+"([^"]+)".*$/S\t\1/g' \
>		-re "s/^\s*}\s*\$/E\t-/g" |
>	while read mode title; do
>		case "$mode" in
>		M)	if [ $numbers_only -ne 0 ]; then
>				echo -e "${number}${itemno}"
>			elif [ $titles_only -ne 0 ]; then
>				echo -e "${prefix}${title}"
>			else
>				echo -e "${number}${itemno}\t${prefix}${title}"
>			fi
>			itemno=$(($itemno + 1))
>			entry=1
>			;;
>		S)	number="${number}${itemno}>"
>			prefix="${prefix}${title}>"
>			itemno=0
>			;;
>		*)	if [ $entry -ne 0 ]; then
>				entry=0
>			elif [ -n "$number" ]; then
>				number="${number%>}"
>				prefix="${prefix%>}"
>				case "$number" in
>				*">"*)	itemno="${number##*>}"
>					number="${number%>*}>"
>					prefix="${prefix%>*}>"
>					itemno=$(($itemno + 1))
>					;;
>				*)	itemno=$number
>					itemno=$(($itemno + 1))
>					prefix=
>					number=
>					;;
>				esac
>			fi
>			;;
>		esac
>	done
>}
>
>check_item() {
>	case "$search_item" in
>	[0-9]*)	numbers_only=1; titles_only=0;;
>	*)	numbers_only=0; titles_only=1;;
>	esac
>	local cnt=$(show_menu | grep -swc "$search_item")
>	if [ $cnt -eq 0 ]; then
>		echo "$search_item: menu item not found." >&2
>		exit 1
>	fi
>	exit 0
>}
>
>
>parse_args "$@"
>[ -r "$grubmenu" ] || show_usage "$grubmenu: config file not found."
>[ -z "$search_item" ] || check_item
>show_menu
>

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