如何将一个文本文档中的某些行写入一新文本？？？

stxsbc

目标二：删除行首的"!"
目标二：将“inp ” “Structure ” “Layer  ” “Limits ”开始的行写入到新的文本b.txt，筛选需要区别大小写



样本a.txt如下：

!Warning: Structure smx_22: Text exists and is being ignored
!Warning: 53 text nodes ignored on layers: 0
!Warning: nearest MEBES/MODE5 resolution 0.00099999830126762390137
!inp ABAH005_f.gds
!Structure AABB005_f
!Layer  11
!Exploding primary file hierarchy
!
!Limits (-9787.5,-9832.5) (9787.5,9900)
!Warning: Structure smx_22: Text exists and is being ignored
!Warning: 53 text nodes ignored on layers: 0
!Warning: nearest MEBES/MODE5 resolution 0.00099999830126762390137
!inp AABB005_f.gds
!Structure AABB005_f
!Layer  5
!Exploding primary file hierarchy
!
!Limits (-9785.45,-9864) (9787.5,9900)

jason680

回复 1# stxsbc

$ awk '{sub("^!","")}/^inp|^Structure|^Layer|^Limits/' a.txt > b.txt