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Understanding the Gemfile.lock file
After running the bundle install command, 'Gemfile.lock ' is created in the working directory. What do the directives inside that file mean?
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How can I pass arguments to a batch file?
I need to pass an ID and a password to a batch file at the time of running rather than hardcoding them into the file.
17 An...
Response Content type as CSV
I need to send a CSV file in HTTP response. How can I set the output response as CSV format?
11 Answers
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Mechanisms for tracking DB schema changes [closed]
...e database structure, we have a single script, update.php, and a number of files numbered 1.sql, 2.sql, 3.sql, etc. The script uses one extra table to store the current version number of the database. The N.sql files are crafted by hand, to go from version (N-1) to version N of the database.
They c...
How to get a variable name as a string in PHP?
...php
function varName( $v ) {
$trace = debug_backtrace();
$vLine = file( __FILE__ );
$fLine = $vLine[ $trace[0]['line'] - 1 ];
preg_match( "#\\$(\w+)#", $fLine, $match );
print_r( $match );
}
$foo = "knight";
$bar = array( 1, 2, 3 );
$baz = 12345;
varName( $foo );
varName( $bar...
How to set web.config file to show full error message
...se of some security reasons. I know that we can do this through web.config file. But how?
3 Answers
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Change key pair for ec2 instance
... as /dev/xvda
Start the main instance
Login as before, using your new .pem file
That's it.
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How can I run MongoDB as a Windows service?
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It requires a logfile path, you can add the dbpath and logfile path like this mongod --dbpath="c:\data\db" --logpath="c:\data\db\log.txt" --install , After this you need to run net start MongoDB.
– sivaram636
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How to git reset --hard a subdirectory?
...he HEAD commit.
As answered by Ajedi32, both checkout forms don't remove files which were deleted in the target revision.
If you have extra files in the working tree which don't exist in HEAD, a git checkout HEAD -- <path> won't remove them.
Note: With git checkout --overlay HEAD -- <pat...
Bash script and /bin/bash^M: bad interpreter: No such file or directory [duplicate]
...env using vi and test.
Unix uses different line endings so can't read the file you created on Windows. Hence it is seeing ^M as an illegal character.
If you want to write a file on Windows and then port over, make sure your editor is set to create files in UNIX format.
In notepad++ in the bottom ...