Add mkchecksums

1 files changed, 48 insertions, 0 deletions

diff --git a/.local/bin/mkchecksums b/.local/bin/mkchecksums
new file mode 100755
index 0000000..5a7ac1f
--- /dev/null
+++ b/.local/bin/mkchecksums
@@ -0,0 +1,48 @@
+#! /usr/bin/env sh
+
+main()
+{
+	# Handle opts
+	opts "$@"
+	shift "$OPTS"
+	unset OPTS
+
+	# Show help
+	[ "$OPT_HELP_ONLY" ] && usage && exit 0
+	[ -z "$1" ] && usage && exit 1
+
+	printf "md5    %s\n" "$(md5sum "$1" | cut -f1 -d" ")"
+	printf "sha1   %s\n" "$(sha1sum "$1" | cut -f1 -d" ")"
+	printf "sha224 %s\n" "$(sha224sum "$1" | cut -f1 -d" ")"
+	printf "sha256 %s\n" "$(sha256sum "$1" | cut -f1 -d" ")"
+	printf "sha384 %s\n" "$(sha384sum "$1" | cut -f1 -d" ")"
+	printf "sha512 %s\n" "$(sha512sum "$1" | cut -f1 -d" ")"
+}
+
+opts()
+{
+	OPTS=0
+
+	while getopts ":h" opt
+	do
+		case "$opt" in
+			h) OPT_HELP_ONLY=1 ;;
+			*)
+				printf "Invalid option passed: %s\n" "$OPTARG" >&2
+				;;
+		esac
+	done
+}
+
+usage()
+{
+	cat <<EOF
+Usage:
+	$(basename "$0") -h
+	$(basename "$0") <file>
+
+Make a number of checksums of a given file.
+EOF
+}
+
+main "$@"