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How do you run a command for each line of a file?
...txt
If you have special chars and/or a lot of lines in file.txt.
xargs -0 chmod 755 < <(tr \\n \\0 <file.txt)
if your command need to be run exactly 1 time by entry:
xargs -0 -n 1 chmod 755 < <(tr \\n \\0 <file.txt)
This is not needed for this sample, as chmod accept multip...
Converting Python dict to kwargs?
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answered Apr 19 '11 at 0:48
unutbuunutbu
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add column to mysql table if it does not exist
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Note that INFORMATION_SCHEMA isn't supported in MySQL prior to 5.0. Nor are stored procedures supported prior to 5.0, so if you need to support MySQL 4.1, this solution isn't good.
One solution used by frameworks that use database migrations is to record in your database a revision numbe...
Duplicate headers received from server
...tInvalidFileNameChars()));
string invalidReStr = string.Format(@"[{0}]+", invalidChars);
string replace = Regex.Replace(name, invalidReStr, "_").Replace(";", "").Replace(",", "");
return replace;
}
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Comparing date part only without comparing time in JavaScript
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803
I'm still learning JavaScript, and the only way that I've found which works for me to compare t...
What does “atomic” mean in programming?
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edited Aug 18 '18 at 20:39
Basil Bourque
186k5757 gold badges571571 silver badges804804 bronze badges
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Pure virtual destructor in C++
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220
Yes. You also need to implement the destructor:
class A {
public:
virtual ~A() = 0;
};
inl...
Node.JS constant for platform-specific new line?
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230
Not sure if this is new in the 0.8.x but there is now a constant http://nodejs.org/api/os.html#o...
How do I pass parameters into a PHP script through a webpage?
...rg2
... and then accessing them in the script thusly:
<?php
// $argv[0] is '/path/to/wwwpublic/path/to/script.php'
$argument1 = $argv[1];
$argument2 = $argv[2];
?>
What you need to be doing when passing arguments through HTTP (accessing the script over the web) is using the query string a...