Confusions in example 2-2 (program list 2-2) of advanced programming in UNIX environment

Today I learned the Example 2-2 of "Advanced Programming in UNIX environment", but I am very confused.

I created a directory named sample2_2, put the source code in it, compile it, and generate the sample2_2 file. Then copy pathconf. sym and sysconf. sym to this directory.

Run the following command:

./Sample2_2 pathconf. sym

The result is as follows:

No symbol for arg_max

Arg_max = 2621440

Max_canon defined to be 255

Max_canon= 255

I am not very clear about this information.

If you execute the following command:

./Sample2_2 sysconf. sym

The above information is displayed.

 

I will leave the question here first. I will have the opportunity to figure it out later.

 

 

2010-3 3