add install script

build

@@ -0,0 +1,43 @@
+#!/bin/sh -e
+# install.sh
+installtarget=/usr/local/bin
+chatlogdir=/var/log/bunkchat
+chatlog=chat.log
+
+if ! [$(id -u) = 0]; then
+    echo "ERROR: please run install with root permission" >&2
+    exit 1
+fi
+
+chattrfailed() {
+    set +e
+    rm -rf $chatlogdir
+    echo
+    echo "ERROR: could not set append only attribute in ${chatlogdir}"
+    echo "       does your filesystem support 'chattr +a' ?"
+    exit 1
+}
+
+# do this setup first in case chattr fails
+# mk chat directory and touch file
+mkdir $chatlogdir
+chmod 755 $chatlogdir
+
+touch ${chatlogdir}/${chatlog}
+chmod 666 ${chatlogdir}/${chatlog}
+# if chattr +a not supported on this file system catch error and clean up
+chattr +a ${chatlogdir}/${chatlog} || chattrfailed
+
+cp proclaim heed scry $installtarget
+
+chmod 755 ${installtarget}/proclaim
+chmod 755 ${installtarget}/heed
+chmod 755 ${installtarget}/scry
+
+chown root:root ${installtarget}/proclaim
+chown root:root ${installtarget}/heed
+chown root:root ${installtarget}/scry
+
+
+echo "SUCCESS! bunkchat installed!"
+exit 0