I have the following file with the format shown below. how do I do a first pattern match on cell = XX, and edit a specific string after matching the cell=XX.
File.txt
{cell DFT_AXA
{naming A_1 A_2 A_3 A_4 A_5 B_1 B_2 B_3 C_1 C_2 C_3 D_1 D_2 D_3 D_4 D_5 D_6
E_1 E_2 F_1 F_2 F_3 G_1 G_2 G_3
H_1 H_2 H_3 H_4
}
Output would be:
if cell = DFX_AXA , replace G_2 with I_1.
Welcome to Stack overflow Ginny. Try following awk command too:
awk '/}/{a=""} /cell/ && $2=="DFT_AXA"{a=1} a && sub("G_2","I_1") 1' Input_file
EDIT1: Adding non-one liner form solution with explanation too now as per OP's request.
awk '/}/{ #### Looking for } if any line is having this character, if yes then do following.
a="" #### making variable a value to NULL.
}
/cell/ && $2=="DFT_AXA"{ #### searching string cell and then checking if 2nd field is DFT_AXA, if yes then do following.
a=1 #### making variable a as 1.
}
a && sub("G_2","I_1") 1 #### checking variable a value is NOT NULL and substitute G_2 with I_1 in a line, if both conditions are true line will be edited and 1 will print the line. awk works on condition/action method. If condition is TRUE then action should be done, if NO action is given like here so default action print will happen.
' Input_file #### Mentioning Input_file here.
