Please explain this awk statement
34898
How does awk '!a[$0]++' work?
8903
How do I use floating-point division in bash?
97402
Piping from grep to awk not working
97476
What does the pipe operator do in SQL?
156785
How to concatenate multiple lines of output to one line?
115392
sum numbers in different lines in shell
66213
Awk compare 2 files, print match together with non match lines filled with 0
88828
Range of lines in file
49902
want the last line when duplicate awk?
38597
Why does using double quotes to enclose awk's action statements produce different results than when using single quotes to enclose them?
64568
Extract two values from the output of a command
2902
external variable in awk
111363
What does the following for loop syntax mean in C?
69775
Why redirect output to 2>&1 and 1>&2?
102393
The R %*% operator
134277
Print columns in awk by header name
139251
Unix separation of specific numbers from Column