删除带sed的文件中的最后一次出现

Question

我想使用sed命令删除文件中最后一次出现的"(* cds_ams_schematic *)“。

`view schematic

`timescale 1ns / 1ns 
(* cds_ams_schematic *)

module ...

endmodule

// LAST TIME SAVED: Sep  9 12:14:07 2022
// NETLIST TIME: Dec 13 09:13:34 2022

`view schematic

`timescale 1ns / 1ns 
(* cds_ams_schematic *)

module ...
inout  N, P, sub;


endmodule

// LAST TIME SAVED: Oct 10 14:16:33 2022
// NETLIST TIME: Dec 13 09:13:34 2022

`view schematic

`timescale 1ns / 1ns 
(* cds_ams_schematic *)

module ...
inout  PAD;

endmodule
    
`view schematic_incisiv

`timescale 1ns / 1ns 
(* cds_ams_schematic *)

`noworklib
`noview

我试过命令

sed -rn 's/[(][*]\scds_ams_schematic\s[*][)]//' sample_txt_file.txt

然而，它没有起作用。有什么想法吗？

Answer 1

您可以尝试这个命令(参考文献)

tac input.txt | awk '!found && /(\* cds_ams_schematic \*)/{found=1;next}1' | tac > output.txt