我有一个“ diff like”文件，其中各字段之间用制表符分隔。有没有办法只使用标准的gnu工具来获得仅出现一次的行，如果第二行相等，则这两行相等。
基本上，我只想为新行和已删除行而不是已编辑行过滤此文件。
[文件首先按第二列（名称）排序，然后按第一列（减法然后是加法）排序。
< Chandler Hutchison Chicago Bulls Wed, Oct 30, 2019 Out (Hamstring) - The Bulls have listed Hutchison as OUT for Wednesday's (Oct. 30) game against the Cavs.
> Chandler Hutchison Chicago Bulls Thu, Oct 31, 2019 Out (Hamstring) - The Bulls have listed Hutchison as OUT for Friday's (Nov. 1) game.
> Daniel Theis Boston Celtics Thu, Oct 31, 2019 Day To Day (Left Ankle) - Boston Celtics F-C Daniel Theis is probable for Friday's (Nov. 1) game against New York right a left ankle sprain.
< Edmond Sumner Indiana Pacers Wed, Oct 30, 2019 Day To Day (Hand) - Sumner is OUT for Wednesday's game (Oct. 30) against the Nets.
> Edmond Sumner Indiana Pacers Thu, Oct 31, 2019 Out (Hand) - Sumner will miss at least three weeks with a non-displaced fracture in his right hand.
< Elfrid Payton New York Knicks Wed, Oct 30, 2019 Day To Day (Hamstring) - The Knicks have listed Payton Jr. as OUT for Wednesday's game (Oct. 30) against the Magic.
> Elfrid Payton New York Knicks Thu, Oct 31, 2019 Day To Day (Hamstring) - Payton is listed as out for Friday's (Nov. 1) game against Boston.
< Enes Kanter Boston Celtics Wed, Oct 30, 2019 Day To Day (Left Knee) - The Celtics have listed Kanter as OUT for Wednesday's game (Oct. 30) against the Bucks.
> Enes Kanter Boston Celtics Thu, Oct 31, 2019 Day To Day (Left Knee) - The Celtics have listed Kanter as OUT for Friday's game (Nov. 1) against New York.
< Evan Turner Atlanta Hawks Wed, Oct 30, 2019 Day To Day (Achilles) - Turner is listed as doubtful for Thursday's (Oct. 31) game.
> Evan Turner Atlanta Hawks Thu, Oct 31, 2019 Out (Achilles) - Turner is listed as OUT for Thursday's (Oct. 31) game.
> Frank Ntilikina New York Knicks Thu, Oct 31, 2019 Day To Day (Neck) - Ntilikina is listed as probable for Friday's (Nov. 1) game.
< Harry Giles Sacramento Kings Wed, Oct 30, 2019 Day To Day (Knee) - Giles III was inactive for Wednesday's game (Oct. 30) against the Hornets.
> Harry Giles Sacramento Kings Thu, Oct 31, 2019 Day To Day (Knee) - Giles III is listed as questionable for Friday's (Nov. 1) game.
< Jaylen Brown Boston Celtics Wed, Oct 30, 2019 Day To Day (Illness) - Brown is listed as OUT for Wednesday's (Oct. 30) game against the Bucks.
> Jaylen Brown Boston Celtics Thu, Oct 31, 2019 Day To Day (Illness) - Brown is listed as questionable for Friday's (Nov. 1) game against New York.
> Justise Winslow Miami Heat Thu, Oct 31, 2019 Out (Lower Back) - Miami Heat F Justise Winslow is OUT for Thursday's (Oct. 31) game against Atlanta with lower back stiffness.
> Kawhi Leonard Los Angeles Clippers Thu, Oct 31, 2019 Out (Load Management) - Los Angeles Clippers F Kawhi Leonard is out for Thursday's (Oct. 31) against San Antonio.
> Kyle Korver Milwaukee Bucks Thu, Oct 31, 2019 Out (Rest) - Korver is listed as OUT for Friday's (Nov. 1) game.
> Matthew Dellavedova Cleveland Cavaliers Thu, Oct 31, 2019 Out (Personal) - Dellavedova is listed as OUT for Friday's (Nov. 1) game.
< Myles Turner Indiana Pacers Wed, Oct 30, 2019 Day To Day (Sprained Right Ankle) - Turner left Wednesday's (October 30) game with a sprained right ankle.
> Myles Turner Indiana Pacers Thu, Oct 31, 2019 Out (Sprained Right Ankle) - Turner is week-to-week with a sprained right ankle.
< Rajon Rondo Los Angeles Lakers Tue, Oct 29, 2019 Day To Day (Calf) - Rondo did not play in Tuesday's game (Oct. 29) against the Grizzlies.
> Rajon Rondo Los Angeles Lakers Thu, Oct 31, 2019 Day To Day (Calf) - Rondo is listed as out for Friday's (Nov. 1) game against Dallas.
< Sekou Doumbouya Detroit Pistons Wed, Oct 30, 2019 Day To Day (Concussion) - The Pistons have listed Doumbouya as OUT for Wednesday's game (Oct. 30) against the Raptors.
> Sekou Doumbouya Detroit Pistons Thu, Oct 31, 2019 Out (Concussion) - The Pistons have listed Doumbouya as OUT for Friday's (Nov. 1) game.
> Will Barton Denver Nuggets Thu, Oct 31, 2019 Out (Left Toe) - Denver Nuggets G Will Barton is OUT for Thursday's (Oct. 31) game against New Orleans with left toe inflammation.
经过一番苦恼之后，我想到了这个。它计算第二个字段的所有出现次数，然后打印等于1的那些出现。
awk -F $'\t' '{count[$2]++} count[$2] == 1'