how can i find number of lines in files & subdirectories


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# 1  
how can i find number of lines in files & subdirectories

how can i find number of lines in files & subdirectories ?
# 2  
for a file:

Code:
wc -l filename

I'm presuming by "a directory" you mean "sum of lines for all files in a directory". If you don't want to include subdirectories:

Code:
cat dir/* | wc -l

If you do:
Code:
find dir -type f | xargs cat | wc -l

This User Gave Thanks to Corona688 For This Post:
# 3  
Code:
find . -type f -exec wc -l {} \;

You can get the summary lines for each file under current folder and subfolders.
# 4  
@Corona688 Thanks
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Test Your Knowledge in Computers #592
Difficulty: Medium
Suppose we want to sort a huge collection of 1 trillion, 10^12, elements. Doing so with Selection Sort or Insertion Sort would require about n^2 = (10^12)^2 = 10^24 or 1 sextillion comparisons.
True or False?

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