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How do I use a file grep comparison inside a bash if/else statement?
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205
From grep --help, but also see man grep:
Exit status is 0 if any line was selected, 1 other...
`testl` eax against eax?
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It tests whether eax is 0, or above, or below. In this case, the jump is taken if eax is 0.
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How to prevent Browser cache for php site
...;?php
header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0");
header("Cache-Control: post-check=0, pre-check=0", false);
header("Pragma: no-cache");
?>
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Multidimensional Array [][] vs [,] [duplicate]
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501
One is an array of arrays, and one is a 2d array. The former can be jagged, the latter is unif...
typecast string to integer - Postgres
...lesced field such as, for example:-
SELECT CAST(coalesce(<column>, '0') AS integer) as new_field
from <table>
where CAST(coalesce(<column>, '0') AS integer) >= 10;
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How to connect to my http://localhost web server from Android Emulator
...ct it to my localhost web server page at http://localhost or http://127.0.0.1 ?
11 Answers
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CSS horizontal centering of a fixed div?
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left: 50%;
margin-left: -400px; /* Half of the width */
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What does “Auto packing the repository for optimum performance” mean?
...s git gc --auto. If there are enough loose objects (by default, at least 6700), it will then invoke git repack -d -l to pack them. If there are too many separate packs, it will also repack them into one.
A pack is a delta-compressed single file, containing a large number of objects. It's more effic...
Install a Windows service using a Windows command prompt?
...in your .net folder (for .net 4 it's C:\Windows\Microsoft.NET\Framework\v4.0.30319 for example) and use it to install your service, like this:
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe" "c:\myservice.exe"
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What's the difference between echo, print, and print_r in PHP?
...s you have in your variables. Consider this test program:
$values = array(0, 0.0, false, '');
var_dump($values);
print_r ($values);
With print_r you can't tell the difference between 0 and 0.0, or false and '':
array(4) {
[0]=>
int(0)
[1]=>
float(0)
[2]=>
bool(false)
[3]=...