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bash: shortest way to get n-th column of output
...
Because you seem to be unfamiliar with scripts, here is an example.
#!/bin/sh
# usage: svn st | x 2 | xargs rm
col=$1
shift
awk -v col="$col" '{print $col}' "${@--}"
If you save this in ~/bin/x and make sure ~/bin is in your PATH (now that is something you can ...
When is SQLiteOpenHelper onCreate() / onUpgrade() run?
... Could you please elaborate more your answer adding a little more description about the solution you provide?
– abarisone
Jun 16 '15 at 13:35
add a comment
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rvm installation not working: “RVM is not a function”
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You need to run the following
$ source ~/.rvm/scripts/rvm
then run this
$ type rvm | head -n 1
and if you get
rvm is a function
the problem is solved.
You also need to run user$ rvm requirements to see dependency requirements for your operating system
Source: h...
In Unix, how do you remove everything in the current directory and below it?
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IMO, this is the best answer, particularly in scripts.
– wizonesolutions
Jul 17 '15 at 14:00
1
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ASP.NET MVC Custom Error Handling Application_Error Global.asax?
...uestContext.HttpContext.Request.IsAjaxRequest())
{
JavaScriptResult result = new JavaScriptResult()
{
Script = "try{history.pushState(null,null,window.location.href);}catch(err){}window.location.replace('" + UrlHelper.GenerateContentUrl(this.Url, conte...
How do you version your database schema? [closed]
...n be rolled back without losing data or functionality.
I have a migration script that contains statements that creates tables and columns if they don't exist yet and fills them with data.
The migration script runs whenever the production code is updated and after new installs.
When I would like t...
not None test in Python [duplicate]
...use there is one and only one instance of None present in a running Python script/program, is is the optimal test for this. As Johnsyweb points out, this is discussed in PEP 8 under "Programming Recommendations".
As for why this is preferred to
if not (val is None):
# ...
this is simply par...
How to effectively work with multiple files in Vim
I've started using Vim to develop Perl scripts and am starting to find it very powerful.
28 Answers
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How to generate random SHA1 hash to use as ID in node.js?
...ng that has a lot more outputs? Like a timestamp with milliseconds? Or JavaScript's Math.random? Or even a combination of those two?!
Let's compute just how many unique ids we would get ...
The uniqueness of a timestamp with milliseconds
When using (new Date()).valueOf().toString(), you're gett...
Refresh a page using PHP
...een, like stock prices, but not use that information in a form or from javascript, perhaps use an iframe tag pointing to a page with just the information being updated, and with a delay appropriate to how current the information must be.
– Patanjali
Oct 23 '16 ...