Shell (10) sort

1. Sort

A. Sorting strings by default

　　

B. With-r option: Reverse sort

　　

C. Specify the option data field separator with-T, and the-K option specifies the data field to compare

　　

D. Use the-N option to specify "pure digit sorting". As can be seen in the following example, the difference between using the-N option

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E. Use the-u option to make the same data appear only once

　　

2. Uniq

A. List duplicate data only once: appears to fit with sort

　　

B. Count recurring occurrences. The use of sort has an effect on the results

　　

3. WC counting

　　

Shell (10) sort