olivierpierre

# number of VMs to boot:
vm_num=10

for i in `seq 0 $vm_num`; do
        # here we launch $vm_num `xl create` commands in parallel
        ( xl create /path/to/config/file$i.cfg &> out_$i.log) &
done
wait # wait for all the `xl create` commands to return before continuing further

olivierpierre

#!/bin/sh

if [ "$1" == "" ]; then
	echo "Usage: $0 <folder to compress>"
	exit
fi

NAME=`basename $1`

tar -c --use-compress-program=pigz -f $NAME.tar.gz $NAME

olivierpierre

#!/bin/sh

if [ "$1" == "" ]; then
	echo "Usage: $0 <file to uncompress>"
	exit
fi

pigz -dc $1 | tar xf -

olivierpierre

#!/bin/bash
set -euo pipefail

if [ "$1" == "" ] || [ "$2" == "" ]; then
	echo "usage: $0 <vm_name> <cmd>"
	exit
fi

ssh root@$1 ${*:2} 2>&1 | sed "s/^/[$1] /"

olivierpierre

#!/bin/bash
set -euo pipefail

SCRIPT_RUN_SINGLE="/root/Xen_scripts/vm_run_cmd.sh"

if [ "$#" -lt 4 ]; then
	echo "usage: $0 <prefix> <start> <stop> <cmd>"
	exit
fi

olivierpierre

#!/bin/bash

# This prints the total CPU usage for the whole system (in terms of number of cores used)

top -bn1 | tr -s " " | sed -r "s/^ //" | cut -d " " -f 9 | grep -E ^[0-9]+\.[0-9]+$ | awk -v procs=`cat /proc/cpuinfo | grep cessor | wc -l` 'BEGIN{sum=0} {sum+=$0} END{print sum/procs}'

olivierpierre

#!/bin/sh
#
# Copyright IBM, Corp. 2010  
#
# Authors:
#  Anthony Liguori <aliguori@us.ibm.com>
#
# This work is licensed under the terms of the GNU GPL, version 2.  See
# the COPYING file in the top-level directory.

olivierpierre

Host requirements

• wget
• qemu/kvm

---

Get the FreeBSD 11.3 VM disk image:

wget ftp://ftp.freebsd.org/pub/FreeBSD/releases/VM-IMAGES/11.3-RELEASE/amd64/Latest/FreeBSD-11.3-RELEASE-amd64.qcow2.xz
unxz FreeBSD-11.3-RELEASE-amd64.qcow2.xz

olivierpierre

@@ -58,7 +58,7 @@
     void print();
 
     /* getters and setters */
-    void updateAuthor(const char *newTitle);
+    void updateAuthor(const char *newAuthor);
     char *getAuthor();
 
 private:
@@ -74,7 +74,7 @@