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How can I use a file in a command and redirect output to the same file without truncating it?
...can use a temporary file though.
#!/bin/sh
tmpfile=$(mktemp)
grep -v 'seg[0-9]\{1,\}\.[0-9]\{1\}' file_name > ${tmpfile}
cat ${tmpfile} > file_name
rm -f ${tmpfile}
like that, consider using mktemp to create the tmpfile but note that it's not POSIX.
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Mapping enum to string in hibernate
...ng each one?
– Andrew
Jul 26 at 19:40
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Run two async tasks in parallel and collect results in .NET 4.5
... Console.WriteLine("Starting");
var task1 = Sleep(5000);
var task2 = Sleep(3000);
int[] result = await Task.WhenAll(task1, task2);
Console.WriteLine("Slept for a total of " + result.Sum() + " ms");
}
private async static...
Scroll back to the top of scrollable div
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210
var myDiv = document.getElementById('containerDiv');
myDiv.innerHTML = variableLongText;
myDiv.s...
What is ModelState.IsValid valid for in ASP.NET MVC in NerdDinner?
On the NerdDinner example of Professional ASP.NET MVC 1.0 there's a method to create a new dinner as copied bellow (page 89 of the free NerdDinner version).
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HttpSecurity, WebSecurity and AuthenticationManagerBuilder
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Nice answer Nick. With spring-security-config-5.0.3 (which comes with spring-boot 2.0.0), I couldn't find the method http.authorizeUrls(), maybe it got renamed to http.authorizeRequests() some while ago.
– Yi Ou
Mar 24 '18 at 10:05
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Getting error: Peer authentication failed for user “postgres”, when trying to get pgsql working with
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1077
The problem is still your pg_hba.conf file (/etc/postgresql/9.1/main/pg_hba.conf*).
This li...
Storing Image Data for offline web application (client-side storage database)
...e an offline web application using appcaching. I need to provide it about 10MB - 20MB of data that it will save (client-side) consisting mainly of PNG image files. The operation is as follows:
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Failure [INSTALL_FAILED_ALREADY_EXISTS] when I tried to update my application
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answered Dec 15 '10 at 11:55
WarrenFaithWarrenFaith
55.3k2323 gold badges128128 silver badges145145 bronze badges
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What is a unix command for deleting the first N characters of a line?
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answered Jun 9 '09 at 19:06
iammichaeliammichael
7,82733 gold badges2929 silver badges4141 bronze badges
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