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pludi, radoulov:

Great examples; totally hit the essence.

Then I must have failed to understand the underlying mechanism of pipe. I had always thought that the command in a pipe will never do its job until the preceding one completes and hands over the...

Sorry, I'm lost here...



If this is the case how "sort" can know the end of data it is to process? For example, if we run "cat file | sort" in shell the second command sort will get the entire...

Thanks, Radoulov. Your code explicitly clarified how AWK behaves when it comes to pipe. It really helps me get a lot. But,

When I slightly changed your code as follows:


awk 'BEGIN {
n =...

Hello,

In the book Classic Shell Scripting, there is an example showing how you can call a shell command through awk's pipe:


for (name in telephone){
print name "\t" telephone[name] |...