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Shell Programming and Scripting

trimming and binning rows

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# 1  
Old 06-12-2009
trimming and binning rows
I could not find this on the search..

I want to know how to trim a row

so lets say I have a file that looks like this:

bob 88888888888888

and I want to trim column 2 (lets say 4 off the front and end)

bob 888888

Also, how would I bin column 2

Lets so I want to add and average every 3 values?Smilie
# 2  
Old 06-12-2009
this will remove first 4 and last 4 char of field
Code:
awk '{print substr($2,5,length($2)-8)}'

adding and avg can be done with awk
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