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Change a Rails application to production
How can I change my Rails application to run in production mode? Is there a config file, environment.rb for example, to do that?
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Getting rid of \n when using .readlines() [duplicate]
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This should do what you want (file contents in a list, by line, without \n)
with open(filename) as f:
mylist = f.read().splitlines()
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How can I check MySQL engine type for a specific table?
...se contains several tables using different storage engines
(specifically myisam and innodb). How can I find out which tables are
using which engine?
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Query to list all stored procedures
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As Mike stated, the best way is to use information_schema. As long as you're not in the master database, system stored procedures won't be returned.
SELECT *
FROM DatabaseName.INFORMATION_SCHEMA.ROUTINES
WHERE ROUTINE_TYPE = 'PROCEDURE'
If for so...
www-data permissions?
... to write to it (without having to use sudo). I'm afraid to change the permissions to 777 in case some other user on my machine (or a hacker) attempts to modify files in that directory. How do I only allow access for myself and Apache's www-data?
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Laravel Redirect Back with() Message
I am trying to redirect to the previous page with a message when there is a fatal error.
17 Answers
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How do I modify a MySQL column to allow NULL?
...mn VARCHAR(255);
Columns are nullable by default. As long as the column is not declared UNIQUE or NOT NULL, there shouldn't be any problems.
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Alter Table Add Column Syntax
... PRIMARY KEY CLUSTERED
(
EmployeeID
) WITH( STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF,
ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
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Can I try/catch a warning?
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Set and restore error handler
One possibility is to set your own error handler before the call and restore the previous error handler later with restore_error_handler().
set_error_handler(function() { /* ignore errors */ });
dns_get_record();
restore_error_handler();
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MySql server startup error 'The server quit without updating PID file '
...al/var/mysql/your_computer_name.local.err
It's probably problem with permissions
check if any mysql instance is running
ps -ef | grep mysql
if yes, you should stop it, or kill the process
kill -9 PID
where PID is the number displayed next to username on output of previous command
ch...