I have two files which look something like this:

#define TUNING_CONST 55
#define OTHER_TUNING_CONST 107
...

and

#define TUNING_CONST 65
#define OTHER_TUNING_CONST 93
...

You can think of these as an automatically-generated file and its static base. I would like to compare them, but I can't find a good way. diff isn't apparently able to see that the lines are the same apart from the constants. I tried a hacky approach with xargs but it was a little tricky... here's a start, showing each of the constants in the other file matched up line by line. But it doesn't show the name or the original constant, so it's not useful at this point.

egrep -o '^#define \S ' tuning.h | egrep -o '\S $' | xargs -I % egrep "%" basetune.h | egrep -o '[0-9] $'

This is surely a common case -- lots of programs generate tuning data -- and it can't be that rare to want to see how things change programmatically. Any ideas?

CodePudding user response：

You haven't specified what the expected output should be like, but here there's an option

join -1 2 -2 2 -o 1.2,1.3,2.3 <(sort f1) <(sort f2)

output

OTHER_TUNING_CONST 107 93
TUNING_CONST 55 65