Added check_link_status and check_true.

Makefile

 DESTDIR = /usr/local/nagios/libexec/
-SCRIPTS = check_cups check_glsa check_saned check_lpd check_hddtemp
+SCRIPTS = check_cups check_glsa check_saned check_lpd check_hddtemp \
+	check_link_status check_true
 
 all:;
 
 install:
+	mkdir -p $(DESTDIR)
 	for s in $(SCRIPTS); do install $$s $(DESTDIR)/$$s || exit 1; done

check_link_status

+#!/bin/sh
+#
+# This check script is maintained in a Subversion repository at
+# http://lsvn.lysator.liu.se/svnroot/nagios-plugins.  Contact
+# <ceder@lysator.liu.se> for commit access.
+
+LINK_TMP=`tempfile`
+trap "rm $LINK_TMP" 0
+sudo /sbin/mii-tool $1 > $LINK_TMP 2>&1
+grep 'link ok' < $LINK_TMP >/dev/null 2>&1
+RC=$?
+if [ $RC -eq 0 ]
+then
+    echo OK - link ok
+    exit 0
+else
+    echo CRITICAL - `cat $LINK_TMP`
+    exit 2
+fi

check_true

+#!/bin/sh
+#
+# This check script is maintained in a Subversion repository at
+# http://lsvn.lysator.liu.se/svnroot/nagios-plugins.  Contact
+# <ceder@lysator.liu.se> for commit access.
+
+echo OK - untestable, assumed OK