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What does `kill -0 $pid` in a shell script do?
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kill(1)
$ man 1 kill
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If sig is 0, then no signal is sent, but error checking is still performed.
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kill(2)
$ man 2 kill
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If sig is 0, then no signal is sent, but error checking is still performed; this
can be used to check for the existence of a process ID or process group ID.
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Footnotes for tables in LaTeX
When I do \footnote{} for a value in a table, the footnote doesn't show up. How do I get it to show up? Also, is it possible to get it to show up at the bottom of the table rather than the bottom of the page?
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How to apply shell command to each line of a command output?
Suppose I have some output from a command (such as ls -1 ):
8 Answers
8
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How to bind RadioButtons to an enum?
... enum value instead of a string representation, and as CrimsonX commented, errors get thrown at compile time rather than runtime:
ConverterParameter={x:Static local:YourEnumType.Enum1}
<StackPanel>
<StackPanel.Resources>
<local:ComparisonConverter x:Key="Compar...
How would I run an async Task method synchronously?
I'm learning about async/await, and ran into a situation where I need to call an async method synchronously. How can I do that?
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Get keys from HashMap in Java
I have a Hashmap in Java like this:
14 Answers
14
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How to insert a SQLite record with a datetime set to 'now' in Android application?
Say, we have a table created as:
10 Answers
10
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Can I grep only the first n lines of a file?
...s. :)
– jaypal singh
Jan 7 '12 at 1:05
add a comment
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How to get an array of unique values from an array containing duplicates in JavaScript? [duplicate]
...again.
– Mark Knol
Feb 24 '15 at 22:05
49
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File upload progress bar with jQuery
... Hello Jam,i implemented ur code but getting 500 internal server error.
– Pramod Pandey
Apr 20 '13 at 7:57
6
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