How would you print just the 10th line of a file?
For example, assume that file.txt has the following content:
Line 1 Line 2 Line 3 Line 4 Line 5 Line 6 Line 7 Line 8 Line 9 Line 10
Your script should output the tenth line, which is:
Line 10
# Read from the file file.txt and output the tenth line to stdout. awk ‘NR == 10‘ file.txt # 12 ms
原文：http://www.cnblogs.com/immjc/p/7761996.html