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How does “do something OR DIE()” work in PHP?
...ur query is unsuccessful, it will evaluate the die() statement and end the script.
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Check Whether a User Exists
I want to create a script to check whether a user exists. I am using the logic below:
17 Answers
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How can Bash execute a command in a different directory context?
... current working directory is very important for running it correctly. The script affects the files that live inside the directory it is run within.
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How to search file text for a pattern and replace it with a given value
I'm looking for a script to search a file (or list of files) for a pattern and, if found, replace that pattern with a given value.
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How to set up Spark on Windows?
...ou this version: Hadoop 2 (HDP2, CDH5)
Since version 1.0.0 there are .cmd scripts to run spark in windows.
Unpack it using 7zip or similar.
To start you can execute /bin/spark-shell.cmd --master local[2]
To configure your instance, you can follow this link: http://spark.apache.org/docs/latest/
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How to check if a file is empty in Bash?
....txt
else
rm -f full.txt
touch empty.txt
fi
I like shell scripting a lot, but one disadvantage of it is that the shell cannot help you when you misspell, whereas a compiler like your C++ compiler can help you.
Notice incidentally that I have swapped the roles of empty.txt and full...
Ant: How to execute a command for each file in directory?
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Here is way to do this using javascript and the ant scriptdef task, you don't need ant-contrib for this code to work since scriptdef is a core ant task.
<scriptdef name="bzip2-files" language="javascript">
<element name="fileset" type="fileset"/>...
Specify width in *characters*
...it really is possible.
The same logic could however be implemented in Javascript. I'm using ubiquitous jQuery here:
<html>
<head>
<style>
body { font-size: 20px; font-family: Monospace; }
</style>
<script
type="text/javascript"
src ="htt...
Really Cheap Command-Line Option Parsing in Ruby
...but it's still falsey, so it works just fine for throwaway tools and quick scripts.
One caveat pointed out by FelipeC in the comments in "How to do really cheap command-line option parsing in Ruby", is that your shell might not support the 3-token shebang; you may need to replace /usr/bin/env ruby ...
How do you organise multiple git repositories, so that all of them are backed up together?
...hat I keep ending up with lots of separate repositories and writing simple scripts to help manage them all makes me feel that there is something missing in git. I just can't decide exactly what it is or what to do about it.
– DonGar
Mar 18 '10 at 20:38
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