Merge pull request #93 from ggtakec/update/support_os

Changed support OSes and Fixed scripts, etc

.github/workflows/build_helper.sh

@@ -1350,7 +1350,7 @@ if [ "${RUN_SHELLCHECK}" -eq 1 ]; then
 		# Fedora
 		#
 		if ({ RUNCMD "${INSTALLER_BIN}" "${INSTALL_CMD}" "${INSTALL_CMD_ARG}" "${INSTALL_AUTO_ARG}" ShellCheck || echo > "${PIPEFAILURE_FILE}"; } | sed -e 's/^/    /g') && rm "${PIPEFAILURE_FILE}" >/dev/null 2>&1; then
-			PRNERR "Failed to install cppcheck"
+			PRNERR "Failed to install shellcheck"
 			exit 1
 		fi
 
@@ -1377,7 +1377,7 @@ if [ "${RUN_SHELLCHECK}" -eq 1 ]; then
 		# Ubuntu or Debian
 		#
 		if ({ RUNCMD "${INSTALLER_BIN}" "${INSTALL_CMD}" "${INSTALL_CMD_ARG}" "${INSTALL_AUTO_ARG}" shellcheck || echo > "${PIPEFAILURE_FILE}"; } | sed -e 's/^/    /g') && rm "${PIPEFAILURE_FILE}" >/dev/null 2>&1; then
-			PRNERR "Failed to install cppcheck"
+			PRNERR "Failed to install shellcheck"
 			exit 1
 		fi
 
@@ -1386,7 +1386,7 @@ if [ "${RUN_SHELLCHECK}" -eq 1 ]; then
 		# Alpine
 		#
 		if ({ RUNCMD "${INSTALLER_BIN}" "${INSTALL_CMD}" "${INSTALL_CMD_ARG}" "${INSTALL_AUTO_ARG}" shellcheck || echo > "${PIPEFAILURE_FILE}"; } | sed -e 's/^/    /g') && rm "${PIPEFAILURE_FILE}" >/dev/null 2>&1; then
-			PRNERR "Failed to install cppcheck"
+			PRNERR "Failed to install shellcheck"
 			exit 1
 		fi
 

.github/workflows/ci.yml

@@ -63,16 +63,15 @@ jobs:
         container:
           - ubuntu:24.04
           - ubuntu:22.04
-          - ubuntu:20.04
           - debian:bookworm
           - debian:bullseye
           - rockylinux:9
           - rockylinux:8
           - fedora:41
           - fedora:40
+          - alpine:3.21
           - alpine:3.20
           - alpine:3.19
-          - alpine:3.18
 
     container:
       image: ${{ matrix.container }}
@@ -150,7 +149,7 @@ jobs:
         # <default tag flag>:   If you want to use the created Docker image as the default image, specify "default".
         #
         imageinfo:
-          - alpine:3.20,alpine:3.20,alpine,default
+          - alpine:3.21,alpine:3.21,alpine,default
           - ubuntu:24.04,ubuntu:24.04,ubuntu
 
     #

.github/workflows/docker_helper.sh

@@ -159,7 +159,7 @@ func_usage()
 	echo "  Option:"
 	echo "    --help(-h)                                                print help"
 	echo "    --imagetype-vars-file(-f)                  <file path>    specify the file path to imagetype variable(deafult. \"imagetypevars.sh\")"
-	echo "    --imageinfo(-i)                            <image info>   specify infomration about "base docker image", "base docker dev image", "os type tag" and "default flag" (ex. \"alpine:latest,alpine:latest,alpine,default\")"
+	echo "    --imageinfo(-i)                            <image info>   specify infomration about \"base docker image\", \"base docker dev image\", \"os type tag\" and \"default flag\" (ex. \"alpine:latest,alpine:latest,alpine,default\")"
 	echo "    --organization(-o)                         <organization> specify organaization name on DockerHub(default. \"antpickax\")"
 	echo "    --imagenames(-n)                           <image name>   specify build image names, separate multiple names with commas(ex. \"target,target-dev\")"
 	echo "    --imageversion(-v)                         <version>      the value of this option is set automatically and is usually not specified.(ex. \"1.0.0\")"
@@ -363,11 +363,11 @@ while [ $# -ne 0 ]; do
 	if [ -z "$1" ]; then
 		break
 
-	elif [ "$1" = "-h" ] || [ "$1" = "-H" ] || [ "$1" = "--help" ] || [ "$1" = "--HELP" ]; then
+	elif echo "$1" | grep -q -i -e "^-h$" -e "^--help$"; then
 		func_usage "${PRGNAME}"
 		exit 0
 
-	elif [ "$1" = "-f" ] || [ "$1" = "-F" ] || [ "$1" = "--imagetype-vars-file" ] || [ "$1" = "--IMAGETYPE-VARS-FILE" ]; then
+	elif echo "$1" | grep -q -i -e "^-f$" -e "^--imagetype-vars-file$"; then
 		if [ -n "${OPT_IMAGEVAR_FILE}" ]; then
 			PRNERR "already set \"--imagetype-vars-file(-f)\" option."
 			exit 1
@@ -387,7 +387,7 @@ while [ $# -ne 0 ]; do
 			OPT_IMAGEVAR_FILE="$1"
 		fi
 
-	elif [ "$1" = "-i" ] || [ "$1" = "-I" ] || [ "$1" = "--imageinfo" ] || [ "$1" = "--IMAGEINFO" ]; then
+	elif echo "$1" | grep -q -i -e "^-i$" -e "^--imageinfo$"; then
 		if [ -n "${OPT_DOCKER_IMAGE_INFO}" ]; then
 			PRNERR "already set \"--imageinfo(-i)\" option."
 			exit 1
@@ -399,7 +399,7 @@ while [ $# -ne 0 ]; do
 		fi
 		OPT_DOCKER_IMAGE_INFO="$1"
 
-	elif [ "$1" = "-o" ] || [ "$1" = "-O" ] || [ "$1" = "--organization" ] || [ "$1" = "--ORGANIZATION" ]; then
+	elif echo "$1" | grep -q -i -e "^-o$" -e "^--organization$"; then
 		if [ -n "${OPT_DOCKER_HUB_ORG}" ]; then
 			PRNERR "already set \"--organization(-o)\" option."
 			exit 1
@@ -411,7 +411,7 @@ while [ $# -ne 0 ]; do
 		fi
 		OPT_DOCKER_HUB_ORG="$1"
 
-	elif [ "$1" = "-n" ] || [ "$1" = "-N" ] || [ "$1" = "--imagenames" ] || [ "$1" = "--IMAGENAMES" ]; then
+	elif echo "$1" | grep -q -i -e "^-n$" -e "^--imagenames$"; then
 		if [ -n "${OPT_IMAGE_NAMES}" ]; then
 			PRNERR "already set \"--imagenames(-n)\" option."
 			exit 1
@@ -423,7 +423,7 @@ while [ $# -ne 0 ]; do
 		fi
 		OPT_IMAGE_NAMES="$1"
 
-	elif [ "$1" = "-v" ] || [ "$1" = "-V" ] || [ "$1" = "--imageversion" ] || [ "$1" = "--IMAGEVERSION" ]; then
+	elif echo "$1" | grep -q -i -e "^-v$" -e "^--imageversion$"; then
 		if [ -n "${OPT_IMAGE_VERSION}" ]; then
 			PRNERR "already set \"--imageversion(-v)\" option."
 			exit 1
@@ -435,35 +435,35 @@ while [ $# -ne 0 ]; do
 		fi
 		OPT_IMAGE_VERSION="$1"
 
-	elif [ "$1" = "-p" ] || [ "$1" = "-P" ] || [ "$1" = "--push" ] || [ "$1" = "--PUSH" ]; then
+	elif echo "$1" | grep -q -i -e "^-p$" -e "^--push$"; then
 		if [ -n "${OPT_FORCE_PUSH}" ]; then
 			PRNERR "already set \"--push(-p)\" or \"--notpush(-np)\" option."
 			exit 1
 		fi
 		OPT_FORCE_PUSH="true"
 
-	elif [ "$1" = "-np" ] || [ "$1" = "-NP" ] || [ "$1" = "--notpush" ] || [ "$1" = "--NOTPUSH" ]; then
+	elif echo "$1" | grep -q -i -e "^-np$" -e "^--notpush$"; then
 		if [ -n "${OPT_FORCE_PUSH}" ]; then
 			PRNERR "already set \"--push(-p)\" or \"--notpush(-np)\" option."
 			exit 1
 		fi
 		OPT_FORCE_PUSH="false"
 
-	elif [ "$1" = "-usepc" ] || [ "$1" = "-USEPC" ] || [ "$1" = "--use-packagecloudio-repo" ] || [ "$1" = "--USE-PACKAGECLOUDIO-REPO" ]; then
+	elif echo "$1" | grep -q -i -e "^-usepc$" -e "^--use-packagecloudio-repo$"; then
 		if [ -n "${OPT_USE_PACKAGECLOUD_REPO}" ]; then
 			PRNERR "already set \"--use-packagecloudio-repo(-usepc)\" or \"--not-use-packagecloudio-repo(-notpc)\" option."
 			exit 1
 		fi
 		OPT_USE_PACKAGECLOUD_REPO=1
 
-	elif [ "$1" = "-notpc" ] || [ "$1" = "-NOTPC" ] || [ "$1" = "--not-use-packagecloudio-repo" ] || [ "$1" = "--NOT-USE-PACKAGECLOUDIO-REPO" ]; then
+	elif echo "$1" | grep -q -i -e "^-notpc$" -e "^--not-use-packagecloudio-repo$"; then
 		if [ -n "${OPT_USE_PACKAGECLOUD_REPO}" ]; then
 			PRNERR "already set \"--use-packagecloudio-repo(-usepc)\" or \"--not-use-packagecloudio-repo(-notpc)\" option."
 			exit 1
 		fi
 		OPT_USE_PACKAGECLOUD_REPO=0
 
-	elif [ "$1" = "-pcowner" ] || [ "$1" = "-PCOWNER" ] || [ "$1" = "--packagecloudio-owner" ] || [ "$1" = "--PACKAGECLOUDIO-OWNER" ]; then
+	elif echo "$1" | grep -q -i -e "^-pcowner$" -e "^--packagecloudio-owner$"; then
 		if [ -n "${OPT_PACKAGECLOUD_OWNER}" ]; then
 			PRNERR "already set \"--packagecloudio-owner(-pcowner)\" option."
 			exit 1
@@ -475,7 +475,7 @@ while [ $# -ne 0 ]; do
 		fi
 		OPT_PACKAGECLOUD_OWNER="$1"
 
-	elif [ "$1" = "-pcdlrepo" ] || [ "$1" = "-PCDLREPO" ] || [ "$1" = "--packagecloudio-download-repo" ] || [ "$1" = "--PACKAGECLOUDIO-DOWNLOAD-REPO" ]; then
+	elif echo "$1" | grep -q -i -e "^-pcdlrepo$" -e "^--packagecloudio-download-repo$"; then
 		if [ -n "${OPT_PACKAGECLOUD_DOWNLOAD_REPO}" ]; then
 			PRNERR "already set \"--packagecloudio-download-repo(-pcdlrepo)\" option."
 			exit 1

.github/workflows/ostypevars.sh

@@ -122,20 +122,6 @@ elif echo "${CI_OSTYPE}" | grep -q -i -e "ubuntu:22.04" -e "ubuntu:jammy"; then
 	PKG_EXT="deb"
 	IS_OS_UBUNTU=1
 
-elif echo "${CI_OSTYPE}" | grep -q -i -e "ubuntu:20.04" -e "ubuntu:focal"; then
-	DIST_TAG="ubuntu/focal"
-	INSTALL_PKG_LIST="git autoconf autotools-dev gcc g++ make gdb dh-make fakeroot dpkg-dev devscripts libtool pkg-config ruby-dev rubygems rubygems-integration procps libyaml-dev chmpx-dev gnutls-dev dh-systemd"
-	INSTALLER_BIN="apt-get"
-	UPDATE_CMD="update"
-	UPDATE_CMD_ARG=""
-	INSTALL_CMD="install"
-	INSTALL_CMD_ARG=""
-	INSTALL_AUTO_ARG="-y"
-	INSTALL_QUIET_ARG="-qq"
-	PKG_OUTPUT_DIR="debian_build"
-	PKG_EXT="deb"
-	IS_OS_UBUNTU=1
-
 elif echo "${CI_OSTYPE}" | grep -q -i -e "debian:12" -e "debian:bookworm"; then
 	DIST_TAG="debian/bookworm"
 	INSTALL_PKG_LIST="git autoconf autotools-dev gcc g++ make gdb dh-make fakeroot dpkg-dev devscripts libtool pkg-config ruby-dev rubygems rubygems-integration procps libyaml-dev chmpx-dev libssl-dev"
@@ -242,8 +228,8 @@ elif echo "${CI_OSTYPE}" | grep -q -i "fedora:40"; then
 	PKG_EXT="rpm"
 	IS_OS_FEDORA=1
 
-elif echo "${CI_OSTYPE}" | grep -q -i "alpine:3.20"; then
-	DIST_TAG="alpine/v3.20"
+elif echo "${CI_OSTYPE}" | grep -q -i "alpine:3.21"; then
+	DIST_TAG="alpine/v3.21"
 	INSTALL_PKG_LIST="bash sudo alpine-sdk automake autoconf libtool groff util-linux-misc musl-locales ruby-dev procps yaml-dev chmpx-dev openssl-dev"
 	INSTALLER_BIN="apk"
 	UPDATE_CMD="update"
@@ -256,8 +242,8 @@ elif echo "${CI_OSTYPE}" | grep -q -i "alpine:3.20"; then
 	PKG_EXT="apk"
 	IS_OS_ALPINE=1
 
-elif echo "${CI_OSTYPE}" | grep -q -i "alpine:3.19"; then
-	DIST_TAG="alpine/v3.19"
+elif echo "${CI_OSTYPE}" | grep -q -i "alpine:3.20"; then
+	DIST_TAG="alpine/v3.20"
 	INSTALL_PKG_LIST="bash sudo alpine-sdk automake autoconf libtool groff util-linux-misc musl-locales ruby-dev procps yaml-dev chmpx-dev openssl-dev"
 	INSTALLER_BIN="apk"
 	UPDATE_CMD="update"
@@ -270,8 +256,8 @@ elif echo "${CI_OSTYPE}" | grep -q -i "alpine:3.19"; then
 	PKG_EXT="apk"
 	IS_OS_ALPINE=1
 
-elif echo "${CI_OSTYPE}" | grep -q -i "alpine:3.18"; then
-	DIST_TAG="alpine/v3.18"
+elif echo "${CI_OSTYPE}" | grep -q -i "alpine:3.19"; then
+	DIST_TAG="alpine/v3.19"
 	INSTALL_PKG_LIST="bash sudo alpine-sdk automake autoconf libtool groff util-linux-misc musl-locales ruby-dev procps yaml-dev chmpx-dev openssl-dev"
 	INSTALLER_BIN="apk"
 	UPDATE_CMD="update"

AUTHORS

@@ -2,6 +2,6 @@
 
 Wrote from scratch the initial version of k2hdkc.
 
-2. Hirotaka Wakabayashi <hiwakaba@yahoo-corp.jp>
+2. Hirotaka Wakabayashi <hiwakaba@lycorp.co.jp>
 
 Technical engineer of k2hdkc product.

README.md

@@ -5,8 +5,9 @@ K2HDKC
 [![GitHub forks](https://img.shields.io/github/forks/yahoojapan/k2hdkc.svg)](https://github.com/yahoojapan/k2hdkc/network)
 [![GitHub stars](https://img.shields.io/github/stars/yahoojapan/k2hdkc.svg)](https://github.com/yahoojapan/k2hdkc/stargazers)
 [![GitHub issues](https://img.shields.io/github/issues/yahoojapan/k2hdkc.svg)](https://github.com/yahoojapan/k2hdkc/issues)
-[![debian packages](https://img.shields.io/badge/deb-packagecloud.io-844fec.svg)](https://packagecloud.io/antpickax/stable)
 [![RPM packages](https://img.shields.io/badge/rpm-packagecloud.io-844fec.svg)](https://packagecloud.io/antpickax/stable)
+[![debian packages](https://img.shields.io/badge/deb-packagecloud.io-844fec.svg)](https://packagecloud.io/antpickax/stable)
+[![ALPINE packages](https://img.shields.io/badge/apk-packagecloud.io-844fec.svg)](https://packagecloud.io/antpickax/stable)
 [![Docker image](https://img.shields.io/docker/pulls/antpickax/k2hdkc.svg)](https://hub.docker.com/r/antpickax/k2hdkc)
 [![Docker dev image](https://img.shields.io/docker/pulls/antpickax/k2hdkc-dev.svg)](https://hub.docker.com/r/antpickax/k2hdkc-dev)
 
@@ -42,6 +43,7 @@ Provides the key expiration function which is the feature of k2hash as distribut
 ### Packages
 - [RPM packages(packagecloud.io)](https://packagecloud.io/antpickax/stable)
 - [Debian packages(packagecloud.io)](https://packagecloud.io/antpickax/stable)
+- [ALPINE packages(packagecloud.io)](https://packagecloud.io/antpickax/stable)
 
 ### Docker images
 - [k2hdkc(Docker Hub)](https://hub.docker.com/r/antpickax/k2hdkc)

autogen.sh

@@ -54,18 +54,18 @@ while [ $# -ne 0 ]; do
 		echo "[ERROR] Parameters are something wrong."
 		exit 1
 
-	elif [ "$1" = "-h" ] || [ "$1" = "-H" ] || [ "$1" = "--help" ] || [ "$1" = "--HELP" ]; then
+	elif echo "$1" | grep -q -i -e "^-h$" -e "^--help$"; then
 		echo "Usage: ${AUTOGEN_NAME} [--help(-h)] [--no_update_version_file(-nu)] [--no_aclocal_force(-na)] [--no_check_ver_diff(-nc)]"
 		exit 0
 
-	elif [ "$1" = "-nu" ] || [ "$1" = "-NU" ] || [ "$1" = "--no_update_version_file" ] || [ "$1" = "--NO_UPDATE_VERSION_FILE" ]; then
+	elif echo "$1" | grep -q -i -e "^-nu$" -e "^--no_update_version_file$"; then
 		UPDATE_VERSION_FILE=0
 		FORCEPARAM=""			# do not need force
 
-	elif [ "$1" = "-na" ] || [ "$1" = "-NA" ] || [ "$1" = "--no_aclocal_force" ] || [ "$1" = "--NO_ACLOCAL_FORCE" ]; then
+	elif echo "$1" | grep -q -i -e "^-na$" -e "^--no_aclocal_force$"; then
 		FORCEPARAM=""
 
-	elif [ "$1" = "-nc" ] || [ "$1" = "-NC" ] || [ "$1" = "--no_check_ver_diff" ] || [ "$1" = "--NO_CHECK_VER_DIFF" ]; then
+	elif echo "$1" | grep -q -i -e "^-nc$" -e "^--no_check_ver_diff$"; then
 		PARAMETERS="$1"
 
 	else

buildutils/alpine_build.sh

@@ -99,11 +99,11 @@ while [ $# -ne 0 ]; do
 	if [ -z "$1" ]; then
 		break
 
-	elif [ "$1" = "-h" ] || [ "$1" = "-H" ] || [ "$1" = "--help" ] || [ "$1" = "--HELP" ]; then
+	elif echo "$1" | grep -q -i -e "^-h$" -e "^--help$"; then
 		func_usage "${PRGNAME}"
 		exit 0
 
-	elif [ "$1" = "-b" ] || [ "$1" = "-B" ] || [ "$1" = "--buildnum" ] || [ "$1" = "--BUILDNUM" ]; then
+	elif echo "$1" | grep -q -i -e "^-b$" -e "^--buildnum$"; then
 		if [ -n "${BUILD_NUMBER}" ]; then
 			echo "[ERROR] Already --buildnum(-b) option is specified(${BUILD_NUMBER})." 1>&2
 			exit 1
@@ -119,7 +119,7 @@ while [ $# -ne 0 ]; do
 		fi
 		BUILD_NUMBER="$1"
 
-	elif [ "$1" = "-p" ] || [ "$1" = "-P" ] || [ "$1" = "--product" ] || [ "$1" = "--PRODUCT" ]; then
+	elif echo "$1" | grep -q -i -e "^-p$" -e "^--product$"; then
 		if [ -n "${PACKAGE_NAME}" ]; then
 			echo "[ERROR] Already --product(-p) option is specified(${PACKAGE_NAME})." 1>&2
 			exit 1
@@ -131,7 +131,7 @@ while [ $# -ne 0 ]; do
 		fi
 		PACKAGE_NAME="$1"
 
-	elif [ "$1" = "-y" ] || [ "$1" = "-Y" ] || [ "$1" = "--yes" ] || [ "$1" = "--YES" ]; then
+	elif echo "$1" | grep -q -i -e "^-y$" -e "^--yes$"; then
 		if [ "${NO_INTERACTIVE}" -ne 0 ]; then
 			echo "[ERROR] Already --yes(-y) option is specified." 1>&2
 			exit 1

buildutils/debian_build.sh

@@ -104,11 +104,11 @@ while [ $# -ne 0 ]; do
 	if [ -z "$1" ]; then
 		break
 
-	elif [ "$1" = "-h" ] || [ "$1" = "-H" ] || [ "$1" = "--help" ] || [ "$1" = "--HELP" ]; then
+	elif echo "$1" | grep -q -i -e "^-h$" -e "^--help$"; then
 		func_usage "${PRGNAME}"
 		exit 0
 
-	elif [ "$1" = "-b" ] || [ "$1" = "-B" ] || [ "$1" = "--buildnum" ] || [ "$1" = "--BUILDNUM" ]; then
+	elif echo "$1" | grep -q -i -e "^-b$" -e "^--buildnum$"; then
 		if [ "${BUILD_NUMBER}" -ne 0 ]; then
 			echo "[ERROR] Already --buildnum(-b) option is specified(${BUILD_NUMBER})." 1>&2
 			exit 1
@@ -128,7 +128,7 @@ while [ $# -ne 0 ]; do
 		fi
 		BUILD_NUMBER="$1"
 
-	elif [ "$1" = "-p" ] || [ "$1" = "-P" ] || [ "$1" = "--product" ] || [ "$1" = "--PRODUCT" ]; then
+	elif echo "$1" | grep -q -i -e "^-p$" -e "^--product$"; then
 		if [ -n "${PACKAGE_NAME}" ]; then
 			echo "[ERROR] Already --product(-p) option is specified(${PACKAGE_NAME})." 1>&2
 			exit 1
@@ -140,7 +140,7 @@ while [ $# -ne 0 ]; do
 		fi
 		PACKAGE_NAME="$1"
 
-	elif [ "$1" = "-c" ] || [ "$1" = "-C" ] || [ "$1" = "--class" ] || [ "$1" = "--CLASS" ]; then
+	elif echo "$1" | grep -q -i -e "^-c$" -e "^--class$"; then
 		if [ -n "${PKG_CLASS_NAME}" ]; then
 			echo "[ERROR] Already --class(-c) option is specified(${PKG_CLASS_NAME})." 1>&2
 			exit 1
@@ -152,7 +152,7 @@ while [ $# -ne 0 ]; do
 		fi
 		PKG_CLASS_NAME="$1"
 
-	elif [ "$1" = "-dt" ] || [ "$1" = "-DT" ] || [ "$1" = "--disttype" ] || [ "$1" = "--DISTTYPE" ]; then
+	elif echo "$1" | grep -q -i -e "^-dt$" -e "^--disttype$"; then
 		if [ -n "${OS_VERSION_NAME}" ]; then
 			echo "[ERROR] Already --disttype(-dt) option is specified(${OS_VERSION_NAME})." 1>&2
 			exit 1
@@ -164,14 +164,14 @@ while [ $# -ne 0 ]; do
 		fi
 		OS_VERSION_NAME="$1"
 
-	elif [ "$1" = "-r" ] || [ "$1" = "-R" ] || [ "$1" = "--rootdir" ] || [ "$1" = "--ROOTDIR" ]; then
+	elif echo "$1" | grep -q -i -e "^-r$" -e "^--rootdir$"; then
 		if [ "${IS_ROOTDIR}" -ne 0 ]; then
 			echo "[ERROR] Already --rootdir(-r) option is specified." 1>&2
 			exit 1
 		fi
 		IS_ROOTDIR=1
 
-	elif [ "$1" = "-y" ] || [ "$1" = "-Y" ] || [ "$1" = "--yes" ] || [ "$1" = "--YES" ]; then
+	elif echo "$1" | grep -q -i -e "^-y$" -e "^--yes$"; then
 		if [ "${NO_INTERACTIVE}" -ne 0 ]; then
 			echo "[ERROR] Already --yes(-y) option is specified." 1>&2
 			exit 1
@@ -255,9 +255,9 @@ if [ "${NO_INTERACTIVE}" -eq 0 ]; then
 		printf '[INPUT] Confirm (y/n) : '
 		read -r CONFIRM
 
-		if [ "${CONFIRM}" = "y" ] || [ "${CONFIRM}" = "Y" ] || [ "${CONFIRM}" = "yes" ] || [ "${CONFIRM}" = "YES" ]; then
+		if echo "${CONFIRM}" | grep -q -i -e "^y$" -e "^yes$"; then
 			IS_CONFIRMED=1
-		elif [ "${CONFIRM}" = "n" ] || [ "${CONFIRM}" = "N" ] || [ "${CONFIRM}" = "no" ] || [ "${CONFIRM}" = "NO" ]; then
+		elif echo "${CONFIRM}" | grep -q -i -e "^n$" -e "^no$"; then
 			echo "Interrupt this processing, bye..."
 			exit 0
 		fi