Adjust runtime detection to properly work with LXC hosts

LXC hosts don't have decimal point

Thanks: Ondřej Surý

puppet/apply.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 
-start_seconds=$(cut -d . -f 1 /proc/uptime)
-[ -n "$start_seconds" ] && SECONDS="$[$(cut -d . -f 1 /proc/uptime)-$start_seconds]" || SECONDS="unknown"
+start_seconds=$(sed -e 's/^\([0-9]*\).*/\1/' < /proc/uptime)
+[ -n "$start_seconds" ] && SECONDS="$[$(sed -e 's/^\([0-9]*\).*/\1/' < /proc/uptime)-$start_seconds]" || SECONDS="unknown"
 
 if [ -r /var/lib/jenkins/config.xml ] ; then
   echo "Configuration file /var/lib/jenkins/config.xml exists already." >&2
@@ -98,7 +98,7 @@ $IP $(hostname).example.org $(hostname)
 fi
 
 if puppet apply jenkins_debian_glue.pp ; then
-  [ -n "$start_seconds" ] && SECONDS="$[$(cut -d . -f 1 /proc/uptime)-$start_seconds]" || SECONDS="unknown"
+  [ -n "$start_seconds" ] && SECONDS="$[$(sed -e 's/^\([0-9]*\).*/\1/' < /proc/uptime)-$start_seconds]" || SECONDS="unknown"
   echo "jenkins-debian-glue deployment finished after ${SECONDS} seconds."
 else
   echo "Fatal error during puppet run. :(" >&2

scripts/build-and-provide-package

@@ -15,7 +15,7 @@ PATH='/bin:/sbin:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin'
 export QEMU_RESERVED_VA=0x0
 
 echo "*** Starting $0 at $(date) ***"
-start_seconds=$(cut -d . -f 1 /proc/uptime)
+start_seconds=$(sed -e 's/^\([0-9]*\).*/\1/' < /proc/uptime)
 
 JENKINS_DEBIAN_GLUE_VERSION=$(dpkg --list jenkins-debian-glue 2>/dev/null | awk '/^ii/ {print $3}')
 if [ -n "${JENKINS_DEBIAN_GLUE_VERSION:-}" ] ; then
@@ -170,7 +170,7 @@ bailout() {
 
   ${SUDO_CMD:-} rm -rf /tmp/apt-$$
 
-  [ -n "$start_seconds" ] && SECONDS="$[$(cut -d . -f 1 /proc/uptime)-$start_seconds]" || SECONDS="unknown"
+  [ -n "$start_seconds" ] && SECONDS="$[$(sed -e 's/^\([0-9]*\).*/\1/' < /proc/uptime)-$start_seconds]" || SECONDS="unknown"
   echo "*** Finished execution of $0 at $(date) [running ${SECONDS} seconds] ***"
 
   exit $EXIT