$ sort -k 2n zipcodeAdam 12345Wendy 23456Bob 34567Sam 45678Joe 56789

Sort on multiple fields

The -k m,n option lets you sort on a key that is potentially composed of multiple fields (start at column m, end at column n):$ cat quotafred 2000bob 1000an 1000chad 1000don 1500eric 500 $ sort -k2,2n -k1,1 quotaeric 500an 1000bob 1000chad 1000don 1500fred 2000

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