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grep a file, but show several surrounding lines?
...he match and -A num for the number of lines after the match.
grep -B 3 -A 2 foo README.txt
If you want the same number of lines before and after you can use -C num.
grep -C 3 foo README.txt
This will show 3 lines before and 3 lines after.
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Random date in C#
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244
private Random gen = new Random();
DateTime RandomDay()
{
DateTime start = new DateTime(19...
What does ':' (colon) do in JavaScript?
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252
var o = {
r: 'some value',
t: 'some other value'
};
is functionally equivalent to
v...
Getting name of the class from an instance
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Let JSON object accept bytes or let urlopen output strings
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12 Answers
12
Active
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PostgreSQL create table if not exists
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288
This feature has been implemented in Postgres 9.1:
CREATE TABLE IF NOT EXISTS myschema.mytable...
Is volatile expensive?
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123
On Intel an un-contended volatile read is quite cheap. If we consider the following simple cas...
How can I clear the SQL Server query cache?
I've got a simple query running against SQL Server 2005
5 Answers
5
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