bash脚本，按不一致的日期字段排序

当日期格式不一致时，如何对文件进行排序？脚本中的一个步骤是按日期对文件进行排序。日期格式不一致。例如：有时是mm//dd/yyyy，有时是m/d/yyyy

下面是排序命令：

sort -t"," -k4 -k5 -k11 -k2 -k3 $aval_oldtax_file > oldunix_scol.csv

以下是输入文件的副本：

1,12/01/2017 12:00:00 AM,12/31/9999 12:00:00 AM,0001,PC040206,Monroe,UNION,NC,28110-2712,US,County,179,UNION,Sales,NC COUNTY TAX,0.020000,0,0,,
1,8/1/2010 12:00:00 AM,12/01/2017 12:00:00 AM,0001,PC040206,Monroe,UNION,NC,28110-2712,US,County,179,UNION,Sales,NC COUNTY TAX,0.020000,0,0,,
1,12/01/2017 12:00:00 AM,12/31/9999 12:00:00 AM,0001,PC040206,Monroe,UNION,NC,28110-2712,US,Special,179,UNION,Sales,NC COUNTY TAX,0.020000,0,0,,
1,7/1/2011 12:00:00 AM,11/01/2017 12:00:00 AM,0001,PC040206,Monroe,UNION,NC,28110-2712,US,State,37,NORTH CAROLINA,Sales,NC STATE TAX,0.047500,0,0,,
1,11/01/2017 12:00:00 AM,12/31/9999 12:00:00 AM,0001,PC040206,Monroe,UNION,NC,28110-2712,US,State,37,NORTH CAROLINA,Sales,NC STATE TAX,0.057500,0,0,,

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修饰/排序/取消修饰习惯用法，通过以排序友好的格式格式化日期来添加一个键

paste <(cut -d, -f2 file | xargs -I {} date -d {} +%F%T) file | sort | cut -f2-

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