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Count number of occurrences of a pattern in a file (even on same line)
...occurrences, use -o. Try this:
echo afoobarfoobar | grep -o foo | wc -l
And man grep of course (:
Update
Some suggest to use just grep -co foo instead of grep -o foo | wc -l.
Don't.
This shortcut won't work in all cases. Man page says:
-c print a count of matching lines
Difference in these...
How to set conditional breakpoints in Visual Studio?
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In VS 2015 you need to hover over the breakpoint and click the gear icon to set conditions
– mark.monteiro
Dec 8 '15 at 14:29
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How to generate Javadoc HTML files in Eclipse?
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Project > Generate Javadoc....
In the Javadoc command: field, browse to find javadoc.exe (usually at [path_to_jdk_directory]\bin\javadoc.exe).
Check the box next to the project/package/file for which you are creating the Javadoc.
In the Destination: field, browse to find the...
Write bytes to file
I have a hexadecimal string (e.g 0CFE9E69271557822FE715A8B3E564BE ) and I want to write it to a file as bytes. For example,
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Multiple Type Constraints in Swift
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Any way to do the same thing with classes and structs in the type contraint expression? e.g. <T where T:SomeStruct, T:AnotherStruct>? For classes the compiler appears to interpret this as saying "T is a subclass of both", and for structs it just complains that ...
Why does the C# compiler go mad on this nested LINQ query?
Try to compile following code and you'll find that compiler takes >3 GB of RAM (all free memory on my machine) and very long time to compile (actually I get IO exception after 10 minutes).
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To draw an Underline below the TextView in Android
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Love the 3rd approach. Short, simple and concise and adds just one extra line of code to my program.
– Matt
Feb 15 '13 at 15:20
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How do you log all events fired by an element in jQuery?
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Odd how you and Shawn both misspelled function, and in the same way :).
– Daniel T.
Sep 16 '11 at 2:44
1
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RuntimeWarning: invalid value encountered in divide
...is trying to "divide by zero" or "divide by NaN". If you are aware of that and don't want it to bother you, then you can try:
import numpy as np
np.seterr(divide='ignore', invalid='ignore')
For more details see:
http://docs.scipy.org/doc/numpy/reference/generated/numpy.seterr.html
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How to get the second column from command output?
My command's output is something like:
8 Answers
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