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How to upgrade PostgreSQL from version 9.6 to version 10.1 without losing data?
...e new server, consider running:
./analyze_new_cluster.sh
Running this script will delete the old cluster's data files:
./delete_old_cluster.sh
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Execute and get the output of a shell command in node.js
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Note that if you're looking for using javascript to do scripty kinda things where you really want to wait on output and that sort of thing, you might look at the v8 shell, d8
– hexist
Oct 17 '12 at 18:55
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Why does z-index not work?
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love that script
– Matoeil
Apr 9 '19 at 9:31
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Is there a REAL performance difference between INT and VARCHAR primary keys?
...) ENGINE=InnoDB;
Then, I filled 10 million rows in each table with a PHP script whose essence is like this:
$pdo = get_pdo();
$keys = [ 'alabam', 'massac', 'newyor', 'newham', 'delawa', 'califo', 'nevada', 'texas_', 'florid', 'ohio__' ];
for ($k = 0; $k < 10; $k++) {
for ($j = 0; $j <...
“Diff” an image using ImageMagick
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Here's a script to visually diff two PDFs page-by-page using this method: gist.github.com/brechtm/891de9f72516c1b2cbc1. It outputs one JPG for each page of the PDFs in a pdfdiff directory and additionally prints the numbers of the pag...
Is it worth using Python's re.compile?
... out of setup? It's all about where you want to measure. If I run a python script numerous times, it would have the import re time hit. When comparing the two it is important to separate the two lines for timing. Yes as you say it is when you will have the time hit. The comparison shows that either ...
When to use MongoDB or other document oriented database systems? [closed]
...rking with object code, I don't need an ORM). Sure you have to write a few scripts, but actually it is not that hard and you reuse code
– Aki
Apr 3 '13 at 11:34
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Confused about stdin, stdout and stderr?
..., note that /dev/stdin is a symlink to /proc/self/fd/0 -- the first file descriptor that the currently running program has open. So, what is pointed to by /dev/stdin will change from program to program, because /proc/self/ always points to the 'currently running program'. (Whichever program is doing...
Ignore Xcode warnings when using Cocoapods
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Step: 1 Put the below script in your Podfile.
post_install do |installer|
installer.pods_project.targets.each do |target|
target.build_configurations.each do |config|
config.build_settings['GCC_WARN_INHIBIT_ALL_WARNINGS'] ...
Accessing last x characters of a string in Bash
...l parameters
beginning at offset. If parameter is an indexed array name subscripted by ‘@’ or
‘*’, the result is the length members of the array beginning with
${parameter[offset]}. A negative offset is taken relative to one greater than the
maximum index of the specified array. Substring ex...