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Command to get nth line of STDOUT
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Using sed, just for variety:
ls -l | sed -n 2p
Using this alternative, which looks more efficient since it stops reading the input when the required line is printed, may generate a SIGPIPE in the feeding process, which may in turn generate an unwanted error message:
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Get all unique values in a JavaScript array (remove duplicates)
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Adding new column to existing DataFrame in Python pandas
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24 Answers
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git diff two files on same branch, same commit
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answered Dec 20 '12 at 2:21
JaredMcAteerJaredMcAteer
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What is the difference between “def” and “val” to define a function
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329
Method def even evaluates on call and creates new function every time (new instance of Function...
How to redirect the output of the time command to a file in Linux?
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Try
{ time sleep 1 ; } 2> time.txt
which combines the STDERR of "time" and your command ...
How to randomly select an item from a list?
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Use random.choice()
import random
foo = ['a', 'b', 'c', 'd', 'e']
print(random.choice(foo))...
How to remove specific value from array using jQuery
I have an array that looks like this: var y = [1, 2, 3];
20 Answers
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psycopg2: insert multiple rows with one query
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I built a program that inserts multiple lines to a server that was located in another city.
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