The Promise X30 and beyond have been out for some time. I find that as the older X10 units reach the next phase of their lifecycle, removing LUNs and RAIDs from the units is a necessity. While many are put back into production as near-line or backup storage (with new drives even) these RAIDs still need to be cleaned off. As such, an example of doing so might be creating one large LUN each of an E+J pair. First, let’s delete our spare drives. To do so, click on Spare Drives in the sidebar. Then click on the Delete tab. Check all of the boxes and then click on the…
-
-
Enable Safari Status Bar Using Defaults
Nice and easy one today. By default, the Safari status bar is disabled at the bottom of a Safari screen. To enable: defaults write com.apple.Safari ShowStatusBar -boolean YES
-
Install Fonts Using Apple Configurator
I guess someone asked for it, although it wasn’t me… But you can install fonts on Apple devices, using Apple Configurator. To do so, first open Apple Configurator and click on an existing profile or create a new profile for the font installation. Scroll down in the list along the left sidebar until you see Font. Click on Font and then click on Configure. You are then presented with a dialog box to select a font file. Browse to the font you’d like to deploy and then click on Select. Click on the plus sign (+) in the upper right corner of the screen if you’d like to deploy more…
- iPhone, Mac OS X, Mac OS X Server, Mac Security, Mass Deployment, Microsoft Exchange Server, Network Infrastructure, Ubuntu, Unix, VMware
Quick nmap Hacks
The nmap application is a pretty easy-to-use tool that can be used to port scan objects in a network environment. To obtain mmap in an easy-to-use package installer, for OS X check out the download page at http://nmap.org/download.html#macosx (use the same page to grab it for Windows or *nix as well). Once downloaded run the package/rpm/whatever. Before I scan a system, I like to pull the routing table and eth info to determine how scans are being run, which can be run by using the mmap command anong with the —iflist option: nmap —iflist Basic Scanning To then scan a computer, just use the mmap command followed by the host…
- Active Directory, cloud, Consulting, iPhone, Kerio, Mac OS X, Mac OS X Server, Mac Security, Mass Deployment, Microsoft Exchange Server, Network Infrastructure, Windows Server
Dig TTL While Preparing For A Migration
Any time doing a migration of data from one IP to another where that data has a DNS record that points users towards the data, we need to keep the amount of time it takes to repoint the record to a minimum. To see the TTL of a given record, let’s run dig using +trace, +nocmd to turn off showing the version and query options, +noall to turn off display flags, +answer to still show the answer section of my reponse and most importantly for these purposes +ttlid to toggle showing the TTL on. Here, we’ll use these to lookup the TTL for the https://krypted.com/ A record: dig +trace +nocmd…
-
Disable Swap Files In OS X
Every now and then I need to reclaim that space in /var/vm or I need to stop a process from paging to swap files while I’m troubleshooting something else. I in no way endorse disabling swap files (which basically kills using swap files as a part of your overall virtual memory) for extended periods of time. However, it has saved me in the case of stability concerns long enough to get a system patched or something like that. To disable OS X swap files, all you need to do is stop the com.apple.dynamic_pager daemon and restart. Use launchctl to stop: sudo launchctl unload -wF /System/Library/LaunchDaemons/com.apple.dynamic_pager.plist Once restarted, you may need…
-
Show Line Numbers When Viewing A File
The nl command is used to show line numbers when viewing a file (unless you use the -b option along with an n, which seems to be one of the more pointless things to ever do at the command line, but then what do I know…). So if you’d like to see the line numbers for a file called xsbackup.sh: nl xsbackup.sh The output would look like this: 1 # 2 #!/bin/bash 3 # 4 # Script Name: Or at least, that’s how I used to do it. For decades I never noticed that cat had a -b option. So if you’d like to use cat to see line numbers…
- Mac OS X, Mac OS X Server, Mac Security, Network Infrastructure, Network Printing, Ubuntu, Unix, VMware
Use Netstat To Locate What Process Is Using A Port
You’re installing software on some host. The installation goes well and then you go to access the information you need or connect to the service from another host. Wait, what’s that? Port is already in use? Crap. We’ve all been there. The quick and dirty answer: netstat. Let’s say you’re trying to use port 8080: netstat -tuln | grep 8080 Let’s say the response is httpd. OK, let’s see where that’s located using whereis: whereis httpd And what kind of file is httpd: file /usr/sbin/httpd Which responds with: /usr/sbin/httpd: Mach-O 64-bit executable x86_64 I guess we knew that since it had a port open, but what type of executable is…
-
compgen like a boss
I’ve traditionally used the apropos command to find new commands. But you can also use the compgen command, which looks at the completion matches for given words, to find a list of commands that you can run, simply use compgen with a -c option: compgen -c You can parse information for a single command: compgen -c | grep apropos You can also use -a for aliases, -b for bash built-ins and -k for bash keys, as well as `-A function` for functions. You can then string ’em together: compgen -abckA function I won’t paste the output but I’ll let you pipe it to grep to compgen like a boss. Enjoy!
-
Get Ze Fuser!
A quick and easy way to figure out what process ID and user has a file open is to use fuser. While fuser sounds like maybe some rad command that could emit lasers out of your laptop and fuse together your frenemies, it’s not. It also can’t put that bowl you just dropped off the table that you made when you were 6 and your mother still gushes over. I told you not to use it as an ash try she’ll say. Also, I don’t use it often as lsof can do such things as well. But sometimes you don’t wanna’ wait that long. So let’s look at using fuser.…