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How to view revision history for Mercurial file?
...y to search directories recursively. This gives you immediately an list of all repositories in which the desired file was changed.
Alternatively, next to the ### filter text ### click first on the question mark sign and select "clean" to see all files in the repository. Then inside the ### filter t...
Pipe to/from the clipboard in Bash script
... Linux user who wants to put stuff in the X Windows primary clipboard. Usually, the clipboard you want to talk to has a utility that lets you talk to it.
In the case of X, there's xclip (and others). xclip -selection c will send data to the clipboard that works with Ctrl + C, Ctrl + V in most appl...
mysql update column with value from another table
...answer if you need to change tableB.value according to tableA.value dynamically you can do for example:
UPDATE tableB
INNER JOIN tableA ON tableB.name = tableA.name
SET tableB.value = IF(tableA.value > 0, tableA.value, tableB.value)
WHERE tableA.name = 'Joe'
...
What is the proper way to use the node.js postgresql module?
...ottleknecked based on how fast postgres
can respond to queries. It literally will line everything up, queuing
each query. Yeah, it's async and so that's alright...but wouldn't you
rather multiply your throughput by 10x? Use pg.connect set the
pg.defaults.poolSize to something sane (we do...
New to MongoDB Can not run command mongo
...
After installing the MongoDB you should manually create a data folder.
By default MongoDB will store data in /data/db,
but it won't automatically create that directory. To create it, do:
$ sudo mkdir -p /data/db/
$ sudo chown `id -...
What goes into your .gitignore if you're using CocoaPods?
...
Personally I do not check in the Pods directory & contents. I can't say I spent long ages considering the implications but my reasoning is something like:
The Podfile refers to a specific tag or or commit of each dependency so...
WebForms UnobtrusiveValidationMode requires a ScriptResourceMapping for 'jquery'. Please add a Scrip
...alidationSettings:UnobtrusiveValidationMode:
Specifies how ASP.NET globally enables the built-in validator controls
to use unobtrusive JavaScript for client-side validation logic.
Type: UnobtrusiveValidationMode
Default value: None
Remarks: If this key value is set to "None" [de...
How do I execute a bash script in Terminal?
...
The advice to cd anywhere at all perpetrates another common beginner misunderstanding. Unless the script internally has dependencies which require it to run in a particular directory (like, needing to read a data file which the script inexplicably doesn'...
How to run script as another user without password?
...
Call visudo and add this:
user1 ALL=(user2) NOPASSWD: /home/user2/bin/test.sh
The command paths must be absolute! Then call sudo -u user2 /home/user2/bin/test.sh from a user1 shell. Done.
...
Clear the entire history stack and start a new activity on Android
... need to close the application then while starting Activity B from A just call finish() this will prevent android from storing Activity A in to the Backstack.eg for activity A is Loding/Splash screen of application.
Intent newIntent = new Intent(A.this, B.class);
startActivity(newIntent);
finish();...