Awk/Unix group by in order -


assume have text file:

daisy abc0002 1 kevin abc0001 2 mike abc0001 3 john abc0003 4 pete abc0002 5

we try such result:

kevin abc0001 2 mike abc0001 3 daisy abc0002 1 pete abc0002 5 john abc0003 4

there no order among names last column should considered while grouping rows according abc000# labels. suggestion? thanks.

for data shown, can use:

sort -k2,2 -k3,3

if there might ever multi-digit numbers in third column, specify numeric sorting:

sort -k2,2 -k3,3n sort -k2,2 -k3n,3

for example, given input file:

daisy abc0002 1 kevin abc0001 2 mike abc0001 3 john abc0003 4 pete abc0002 5 hazel abc0002 34 sarah abc0002 24 alice abc0002 11 zoe abc0002 9

numeric sort in column 3

kevin abc0001 2 mike abc0001 3 daisy abc0002 1 pete abc0002 5 zoe abc0002 9 alice abc0002 11 sarah abc0002 24 hazel abc0002 34 john abc0003 4

non-numeric sort in column 3

kevin abc0001 2 mike abc0001 3 daisy abc0002 1 alice abc0002 11 sarah abc0002 24 hazel abc0002 34 pete abc0002 5 zoe abc0002 9 john abc0003 4

note zoe , pete appear in 2 outputs.


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