a more advanced head

git-svn-id: http://www.rocklinux.org/svn/rock-linux/trunk@1370 c5f82cb5-29bc-0310-9cd0-bff59a50e3bc

target/bootdisk/build_stage2.sh

@@ -157,17 +157,8 @@ for i in gui_text mod_install mod_packages mod_gas default ; do
 	cp -v ../2nd_stage/etc/stone.d/$i.sh etc/stone.d
 done
 #
-echo_status "Creating head replacement script."
-cat << 'EOT' > bin/head
-#!/bin/sh
-m=10
-if echo "$1" | grep -- "-[0-9]\+" > /dev/null ; then
-	m="${1#-}"
-	shift
-fi
-exec grep -m$m "" $*
-EOT
-chmod +x bin/head
+echo_status "Copy head replacement script."
+cp $base/target/$target/head bin/head ; chmod +x bin/head
 #
 echo_status "Creating links for identical files."
 while read ck fn

target/bootdisk/head

@@ -0,0 +1,21 @@
+#!/bin/sh
+
+m=10
+
+useage () {
+	echo "Usage: head [OPTION]... [FILE]..."
+	echo -e "\t-n,-[0-9]+\tprint first NUMBER lines instead of first 10"
+	exit 1
+}
+
+while [ "$1" ] ; do
+	case "$1" in
+		-n)	m="$2"	; shift ; shift ;;
+		-[0-9]*)	m=${1#-}; shift ;;
+		-*)	useage ;;
+		*)	break;
+	esac
+done
+
+exec grep -m$m "" $*
+