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How to run cron job every 2 hours
How can I write a Crontab that will run my /home/username/test.sh script every 2 hours?
5 Answers
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Select the values of one property on all objects of an array in PowerShell
...r alternative:
# By property name (string):
$objects.ForEach('Name')
# By script block (more flexibility; like ForEach-Object)
$objects.ForEach({ $_.Name })
This approach is similar to member enumeration, with the same tradeoffs, except that pipeline logic is not applied; it is marginally slower,...
Create an index on a huge MySQL production table without table locking
... MySQL is really, really stupid about this (and a few other things).
Test Script:
(
for n in {1..50}; do
#(time mysql -uroot -e 'select * from website_development.users where id = 41225\G'>/dev/null) 2>&1 | grep real;
(time mysql -uroot -e 'update website_development.users ...
Expand Python Search Path to Other Source
...to the heart of this, so I wanted to share.
In my project, I had the main script in a parent directory, and, to differentiate the modules, I put all the supporting modules in a sub-folder called "modules". In my main script, I import these modules like this (for a module called report.py):
from m...
A list of indices in MongoDB?
...e step further, if you'd like to find all indexes on all collections, this script (modified from Juan Carlos Farah's script here) gives you some useful output, including a JSON printout of the index details:
// Switch to admin database and get list of databases.
db = db.getSiblingDB("admin");
dbs...
creating list of objects in Javascript
Is it possible to do create a list of your own objects in Javascript ? This is the type of data I want to store :
5 Ans...
How do I add a submodule to a sub-directory?
... full path from the top of the working tree.
This is useful for shell scripts where we may want to cd to the top of the working tree but need to handle relative paths given by the user on the command line.
share
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What does “1 line adds whitespace errors” mean when applying a patch?
...for porcelains like git diff itself.
This is mildly annoying as it means scripts like add--interactive, which produce a user-visible diff with color, don't respect the option.
We could teach that script to parse the config and pass it along as --ws-error-highlight to the diff plumbing. But th...
Is there an equivalent for var_dump (PHP) in Javascript?
We need to see what methods/fields an object has in Javascript.
18 Answers
18
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Switching a DIV background image with jQuery
...
I personally would just use the JavaScript code to switch between 2 classes.
Have the CSS outline everything you need on your div MINUS the background rule, then add two classes (e.g: expanded & collapsed) as rules each with the correct background image (o...