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Reload this Page Overwrite & Delete in Text File
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Thread: Overwrite & Delete in Text File
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  #3 (permalink)  
Old 08-14-2007
lorcan lorcan is offline
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Join Date: May 2007
Posts: 219
Save the output from the awk into a variable like

Code:
New_head=$(awk '{ if ( NR == 1 ) { head=substr($0,1,300);} else { last = substr($0,1,300);}END{printf "Header is : %-300s Trailer is : %-300s\n", head, last}' filename )
And then you can do something like

Code:
sed -e "1 c\ $New_head" -e '$d' filename