try this :cat sample.dat | sed "s|^'\([0-9]*\)'|\1 '\1'|" | sort -n | sed "s|^[0-9]* ||" | tee sample.dat.new
On 03/31/2020 08:30 AM, Rich Shepard wrote:
sample.dat: '648',17,'2011-07-11','Insecta','Plecoptera','Chloroperlidae''Suwallia''652',17,'2011-07-11','Insecta','Plecoptera','Pteronarcidae''Pteronarcella'
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