• JAMF,  Windows Server

    Query Tomcat Logs On Windows Servers

    July 11, 2017

    Tomcat logs events into the system log. You can use the get-wmiobject commandlet to see events. Here, we’ll look at a JSS and view only system events: Get-WmiObject Win32_NTLogEvent -ComputerName $jss -Filter "LogFile='system' We can then use AND to further constrain to specific messages, in this case those containing Tomcat: Get-WmiObject Win32_NTLogEvent -ComputerName $jss -Filter "LogFile='system' AND (Message like '%Tomcat%') We can then further constrain output to those with a specific EventCode with another compound statement: Get-WmiObject Win32_NTLogEvent -ComputerName $jss -Filter "LogFile='system' AND (Message like '%Tomcat%') AND (EventCode=1024) For a comprehensive list of Windows event codes, see https://www.ultimatewindowssecurity.com/securitylog/encyclopedia/default.aspx. You could instead use get-eventlog to see system logs. For example, the…

    Read More
  • cloud,  Mac OS X,  Ubuntu,  Unix

    Scripting Instances On Google Cloud From A Mac

    May 18, 2017

    Over the users I’ve written a good bit about pushing a workload off to a virtual machine sitting in a data center somewhere. The Google CloudPlatform has matured a lot and I haven’t really gotten around to writing about it. So… It’s worth going into their SDK and what it looks like from a shell using some quick examples. For starters, you’ll need an account with Google Cloud Platform, at cloud.google.com and you’ll want to go ahead and login to the interface, which is pretty self-explanatory (although at first you might have to hunt a little for some of the more finely grained features, like zoning virtual instances. The SDK…

    Read More
  • iPhone,  Mac OS X Server

    Precache Now Pulls Models From Jamf Pro

    May 13, 2017

    Added 3 new flags into precache tonight: –jamfserver, –jamfuser, and –jamfpassword. These are used to provide a Jamf Pro server (or cloud instance), the username to an account that can list the mobile devices on that server, and a password to that account respectively. Basically, when you provide these, the script will pull a unique set of models and then precache updates for them. It’s similar to grabbing a list of devices: curl -s -u myuser:mypassword https://myserver.jamfcloud.com/JSSResource/mobiledevices And then piping the output of a device list to: perl -lne 'BEGIN{undef $/} while (/<model_identifier>(.*?)<\/model_identifier>/sg){print $1}' And then running that array as an input to precache.py. Hope this helps make the script…

    Read More
  • Mac OS X,  SQL

    Show MySQL Settings

    April 21, 2017

    MySQL usually pulls settings from a my.cnf file. However, you can end up with settings in include files, which can be defined in the my.cnf using the following directives: include /home/mydir/myopt.cnf includedir /home/mydir Because of this, and the fact that you might not have access to all locations of .cnf files on a filesystem, you can also grab them using the SHOW VARIABLES option within SQL, obtained by /usr/local/mysql/bin/mysql -uroot -p mypassword -e "SHOW VARIABLES;" > /tmp/SQLSettings.txt In the above command, -uroot defines we’ll be accessing with the root user, -p defines the password (listed as mypassword) and the -e defines that we want to execute a command and then…

    Read More
  • Mac OS X,  Mac Security,  Mass Deployment,  Network Infrastructure,  precache

    One-liner To Grab Which macOS Caching Server You’re Using

    April 17, 2017

    There’s a macOS tool called AssetCacheLocatorUtil located at /usr/bin/AssetCacheLocatorUtil. The output is in… stderr. Because stderr is so fun to work with (note that sed -i only works with stdin). So, to update the caching server(s) you are using and only print the IP address of those, you’d do the following: /usr/bin/AssetCacheLocatorUtil 2>&1 | grep guid | awk '{print$4}' | sed 's/^\(.*\):.*$/\1/' | uniq If you use Jamf Pro and would like to use this as an extension attribute, that’s posted here: https://github.com/krypted/cachecheck. I didn’t do any of the if/then there, as I’d usually just do that on the JSS.

    Read More
  • Mac OS X,  Mac OS X Server,  Mac Security,  Mass Deployment

    basename and dirname Options

    April 5, 2017

    There are two useful commands when scripting operations that involve filenames and paths. The first of these is dirname: dirname can be used to return the directory portion of a path. The second is basename: basename can be used to output the file name portion of a path. For our first example, let’s say that we have an output of /users/krypted, which we know to be the original short name of my user. To just see just that username, we could use basename to call it: basename /users/charlesedge Basename can also be used to trim output. For example, let’s say there was a document called myresume.pdf in my home folder…

    Read More