[Help] how to increase the number of lines in front of the designated trip? I think in a designated version of the increased number of lines in front of a trip, how to realize the use sed or awk, or other bars, thank you for the guidance! ! [Help] how to increase the number of lines in front of the designated trip? Benbanfa months to : oops : : oops : : oops : raising only known characters Original documents as follows : [code]# Cat grade.txt M.Tans 5/99 Green 8 40 44 48311 9 24 26 48317 green J.Lulu 1998/1999 P.Bunny Yellow 12 35 28 02/99 48 07/99 12 26 26 4842 Brown-3 J.Troll 05/99 12 30 4712 Brown-2 L.Tansl 28[/code] Now in his last trip air add two lines : [code] # Awk '{gsub (/L.Tansl/ "\n\nL.Tansl") ($ }{print' grade.txt M.Tans 5/99 Green 8 40 44 48311 9 24 26 48317 green J.Lulu 1998/1999 P.Bunny Yellow 12 35 28 02/99 48 07/99 12 26 26 4842 Brown-3 J.Troll 05/99 12 30 4712 Brown-2 L.Tansl 28[/code] [Help] how to increase the number of lines in front of the designated trip? #!/bin/sed-F 4 i\ Insert this line before line 4. Or, #!/bin/sed-F /specified-word/ I\ Insert this line before line contained specified-word. [Help] how to increase the number of lines in front of the designated trip? --> Oh, sed so convenient ah, I still want to do : oops : : oops : : oops : [Help] how to increase the number of lines in front of the designated trip? Thank wingger and chenl! ! [Help] how to increase the number of lines in front of the designated trip? Ed with more simple [code] Ed file<<! 4i Some string . W ! [/code] [ Closed window ]