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Can I grep only the first n lines of a file?
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Head defaults to printing the first 10 lines to standard output, so this is valid for 10 lines head log.txt | grep <whatever>
– Zlemini
Sep 30 '16 at 12:38
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Call PowerShell script PS1 from another PS1 script inside Powershell ISE
...order to find the location of a script, use Split-Path $MyInvocation.MyCommand.Path (make sure you use this in the script context).
The reason you should use that and not anything else can be illustrated with this example script.
## ScriptTest.ps1
Write-Host "InvocationName:" $MyInvocation.Invocat...
VIM: Deleting from current position until a space
...es the cursor to just before character x in current line.
To delete up to and including the space, use dfspace.
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Create a tag in a GitHub repository
I have a repository in GitHub and I need to tag it.
I tagged in a shell, but on GitHub , it is not showing up.
7 Answ...
Save plot to image file instead of displaying it using Matplotlib
I am writing a quick-and-dirty script to generate plots on the fly. I am using the code below (from Matplotlib documentation) as a starting point:
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Convert boolean to int in Java
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int myInt = myBoolean ? 1 : 0;
^^
PS : true = 1 and false = 0
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How do I calculate percentiles with python/numpy?
...ed in the SciPy Stats package. It has the percentile function you're after and many other statistical goodies.
percentile() is available in numpy too.
import numpy as np
a = np.array([1,2,3,4,5])
p = np.percentile(a, 50) # return 50th percentile, e.g median.
print p
3.0
This ticket leads me to b...
Getting “A potentially dangerous Request.Path value was detected from the client (&)”
I've got a legacy code issue that requires that I support random urls as if they were requests for the home page. Some of the URLs have characters in them that generate the error "A potentially dangerous Request.Path value was detected from the client (&)" . The site is written with ASP.Net MVC...
What is causing ERROR: there is no unique constraint matching given keys for referenced table?
...R: there is no unique constraint matching given keys for referenced table, and having stared at it for while now I can't figure out why this error arises in this situation.
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How do I handle too long index names in a Ruby on Rails ActiveRecord migration?
...archable"} in this case the index was in fact a multi-column(searchable_id and searchable_type) and the addition of the namespace in the generated name became very long.
– mkrinblk
Jan 3 '17 at 22:56
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