Sort lines by some command

README.md

sort-by

Usage

cat ... | sort-by your command ...

Example

$ cat toto.jsons 
{"a": 1, "b": 2}
{"b": 1, "a": 3}
{"b": 3, "a": 5}
{"b": 0}

$ cat toto.jsons | sort-by 'jq .b'
{"b": 0}
{"b": 1, "a": 3}
{"a": 1, "b": 2}
{"b": 3, "a": 5}

sort-by.sh

#! /bin/bash -e

__sort_by() {
  local sep="|"  # arbitrary
  local cmd="$*"
  local tmpfile=$(mktemp)
  local res=

  while read line; do
    res=$(echo "$line" | $cmd)
    echo "$res$sep$line" >> $tmpfile
  done

  sort $tmpfile | cut "-d$sep" -f2
}

__sort_by $*