more PATH questions

[Ant2ne]

when trying to execute a c compiled program called size

ant2ne@ant2ne-laptop:~$ echo $PATH
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/home/ant2ne/batch:/home/ant2ne/C
ant2ne@ant2ne-laptop:~$ pwd
/home/ant2ne
ant2ne@ant2ne-laptop:~$ size
size: 'a.out': No such file
ant2ne@ant2ne-laptop:~$ cd C
ant2ne@ant2ne-laptop:~/C$ pwd
/home/ant2ne/C
ant2ne@ant2ne-laptop:~/C$ size
size: 'a.out': No such file
ant2ne@ant2ne-laptop:~/C$ ~/C/size
PROGRAM EXECUTES

Why, if size is located in the PATH does it not execute?

[penguin.ch]

Re: more PATH questions

Actually, size gets executed - but the Linux one ...

In more detail: you've reused the name of an installed Linux installed program (rarely a good idea), to the effect that in the absence of a full path, the first program of the name in question is going to executed:

# which size
/usr/bin/size

Of course, reverse the sequence of "PATHs" (on your own risk) would change this behaviour - but avoiding "double names" would be a more sensible approach, I'd say