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How to print matched regex pattern using awk?
...out the line, which by default is called a record, denoted by $0. At least read up the documentation.
If you only want to get print out the matched word.
awk '{for(i=1;i<=NF;i++){ if($i=="yyy"){print $i} } }' file
sha...
How do I get IntelliJ to recognize common Python modules?
...inux) as the home path.
Related discussion: http://devnet.jetbrains.net/thread/286883
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How to output git log with the first line only?
...%s %Cgreen(%cr) %C(bold blue)<%an>%Creset' --abbrev-commit
Further Reading.
https://coderwall.com/p/euwpig/a-better-git-log
Advanced Reading.
http://durdn.com/blog/2012/11/22/must-have-git-aliases-advanced-examples/
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Counting null and non-null values in a single query
...ount(*) FROM us WHERE a IS NOT NULL
Edited to have the full query, after reading the comments :]
SELECT COUNT(*), 'null_tally' AS narrative
FROM us
WHERE a IS NULL
UNION
SELECT COUNT(*), 'not_null_tally' AS narrative
FROM us
WHERE a IS NOT NULL;
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How to remove folders with a certain name
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{} can be read as "for each matching file/ folder" - i.e. it substitutes for each "found" file/ folder. \; is a terminator for the -exec clause.
– wmorrison365
Mar 28 '19 at 14:18
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Maximum size of an Array in Javascript
Context: I'm building a little site that reads an rss feed, and updates/checks the feed in the background. I have one array to store data to display, and another which stores ID's of records that have been shown.
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How can I know which parts in the code are never used?
...ables are unused (or used but in no meaningful way, like written but never read)
the global one: functions that are never called, global objects that are never accessed
For the first kind, a good compiler can help:
-Wunused (GCC, Clang) should warn about unused variables, Clang unused analyzer h...
How to negate specific word in regex? [duplicate]
...me sort of low-performance task anyway, so find a solution that is easy to read, easy to understand and easy to maintain.
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Cloning an Object in Node.js
....assign({}, source);
If available (e.g. Babel), you can use the object spread operator:
let cloned = { ... source };
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What are the benefits of learning Vim? [closed]
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@privatehuff: Read and apply Seven habits of effective text editing.
– Frank Kusters
Dec 2 '13 at 10:07
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