In case you need to search and replace text globally within vi, here’s the command to do so:
:1,$s/old/new
vi is a free software screen-oriented text editor computer program written by Bill Joy in 1976 for an early BSD release.
Peace! \m/
The Schweizer IT Professional and TechNet Blog is sharing a free Windows PowerShell course book that they’ve translated to English. The book seems to be pretty good.
From their blog entry:
Due to its great popularity, we have decided to translate the Windows PowerShell course book to English. So if your mother tongue is not German, maybe you are interested in the English version instead. The book gives you a short introduction with many exercises about the interactive part of Windows PowerShell as well as some hints how to use other objects like WMI, .NET or COM objects like Excel or Internet Explorer.
The book is available for free and you can share it with all your colleagues or friends if you leave it as it is. The books can be used with or without the demo files available at this blog as well.
Enjoy! =0)
An old friend and classmate of mine, Zahid Faisal, wanted to know how to access/read event logs on a remote server using Windows PowerShell. I thought it was an interesting challenge, so after some research and playing around I found that you can make use of the WMI objects to do this.
Follow along to try it out:
1. Open PowerShell and type in the following:
PS C:\> $logs = [System.Diagnostics.EventLog]::GetEventLogs(‘servername’)
This will create a new EventLog object that uses the GetEventLogs method, which by the way, accepts a machine name as an argument. This is exactly what we’re looking for.
2. If the command did not return any errors, continue with the following:
PS C:\> $logs[0]
You should get something like this:
Max(K) Retain OverflowAction Entries Name
10,240 0 OverwriteAsNeeded 838 Application
The [0] after $logs is simply an array of the different types of event logs, which in this case, [0] equals the Application logs.
3. Next, the bread-and-butter – filtering:
PS C:\> $logs[0].entries | where `
>> {($_.Source -eq “Orion”) -AND ($_.TimeWritten -ge $recent)}
>>
By using the where object, we’re able to filter what we’re specifically looking for. In Zahid’s case, he wanted to grab the most recent logs that are only related to “Orion.”
Take note that this will only work if you’re an administrator on the remote server.
Hope this helps. =0)
Ruby has been getting a lot of praise for a while now, so I decided to give it a try. I was surprised to find so many resources already out there, and one I think worth mentioning is this website.
Ruby is a programming language from Japan (available at ruby-lang.org) which is revolutionizing the web. The beauty of Ruby is found in its balance between simplicity and power.
What’s cool about the Try Ruby! website is that it’s an interactive web-based Ruby shell. And on top of that, it also offers a quick 15-minute tutorial as you go along.
Here’s a screenshot:
Pretty cool, ey? Lastly, here’s an excellent help-and-documentation website, specifically for Ruby if you want to delve and read more on it.
Catch you later. =0)
You’re at work, with no remote control access/capability to your Mac at home, brown-outs are occurring, and you forgot to plug it into a power strip due to some unknown reason last night. What do you do? Well, read on…
With some preparation, you can take advantage of Apple’s Mail‘s rules feature to run an AppleScript on a filtered message next time. Here’s how:
tell application “Finder”
display dialog “This computer will go to sleep in 1 minute.” buttons {“Sleep”, “Cancel”} default button 2 giving up after 60
sleep
end tell
Fig. 1.1 – Apple Mail’s Add Rule window
One caveat: For this to work, Apple Mail will need to be running (minimized is fine).
Hopefully, you find this tip helpful and empowering. Now back to work! =0)