Consider the below whose name is DRC.txt. The contain of the file is as below.

#############Actions################# set a [project $p get_action ICV_DRC] action $a set_parameter "ruledeck" action $a set_parameter "options"

Now I have one variable called ruledeck = /praj/test/drc_tsn/test1. I need to append the value of this variable which is the path at the end of third line in the DRC.txt. I was trying to doing it using sed command but the path is not reflected only that variable is reflected. How can I solve the above problem?

sed -i -e '3s/$/"$ruledeck"/' DRC.txt

This command gives output as below. #############Actions################# set a [project $p get_action ICV_DRC] action $a set_parameter "ruledeck" $ruledeck action $a set_parameter "options"

I want Output like the below one. #############Actions################# set a [project $p get_action ICV_DRC] action $a set_parameter "ruledeck" /praj/test/drc_tsn/test1 action $a set_parameter "options"

Consider the file shown below whose name is DRC.txt. The contents of the file are:

#############Actions################# set a [project $p get_action ICV_DRC] action $a set_parameter "ruledeck" action $a set_parameter "options" 

Now I have one variable called ruledeck = /praj/test/drc_tsn/test1. I need to append the value of this variable which is the path at the end of third line in the DRC.txt. I was trying to do it using sed, but the path is not added only the variable is. How can I solve the above problem?

sed -i -e '3s/$/"$ruledeck"/' DRC.txt 

This command gives output as shown below:

#############Actions################# set a [project $p get_action ICV_DRC] action $a set_parameter "ruledeck" $ruledeck action $a set_parameter "options" 

I want output like this instead:

#############Actions################# set a [project $p get_action ICV_DRC] action $a set_parameter "ruledeck" /praj/test/drc_tsn/test1 action $a set_parameter "options"