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Running Windows batch file commands asynchronously
... it prevents the command from being echoed to the console. In batch scripts, sometimes you'll see echo off at the beginning which, when you execute the script, will prevent all the commands from being echoed to the console. The @ is similar but just for that single command. So, sometimes you'...
How to import the class within the same directory or sub directory?
...fies directories from which you're allowed to import. The directory of the script you're running is an exception - you're always allowed to import from it.
– Amber
Sep 20 '13 at 5:47
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How do I query if a database schema exists
As part of our build process we run a database update script as we deploy code to 4 different environments. Further, since the same query will get added to until we drop a release into production it has to be able to run multiple times on a given database. Like this:
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Bash command to sum a column of numbers [duplicate]
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@DavidMann: "$@" is used inside a script to represent all the arguments to the script, or nothing/none if there were no arguments. If you're using the awk in pbpaste | awk …, you simply omit the "$@" (though it would usually do no damage; most interactive ...
Can I use __init__.py to define global variables?
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But every time a script imports config.py, the code inside is executed. What do you recommend if the code inside config.py is to be run only once? Say I'm reading a settings.json file inside config.py and I don't want to open() it every time ...
How to exit in Node.js
...ave anything to do with web servers at all! It's just a host for some JavaScript, with some nifty built-in libraries for doing useful things.
– Brad
Sep 20 '12 at 14:22
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How can I get the corresponding table header (th) from a table cell (td)?
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Pure JavaScript's solution:
var index = Array.prototype.indexOf.call(your_td.parentNode.children, your_td)
var corresponding_th = document.querySelector('#your_table_id th:nth-child(' + (index+1) + ')')
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How to create a cron job using Bash automatically without the interactive editor?
...r (crontab -e). If so, What would be the code create a cronjob from a Bash script?
20 Answers
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Using a .php file to generate a MySQL dump
... I would choose the second one, which doesn't return the output to the PHP script -- no need for the PHP script to get the whole SQL dump as a string : you only need it written to a file, and this can be done by the command itself.
That external command will :
be a call to mysqldump, with the ri...
Git Remote: Error: fatal: protocol error: bad line length character: Unab
... .bashrc that produces output. I, for example had this:
[[ -s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm"
rvm use ruby-1.9.3-p194@rails32
In this case the output from the rvm use will be (wrongly) interpreted as coming from git. So replace it by:
rvm use ruby-1.9.3-p19...