Root How to test if your phone has Root using Terminal and other Rooting question

[No_Nickname90]

Ok. I want to know how can you test that your phone is rooted. When I'm doing the XDA method of rooting my G2, I push all the needed files to my phone, and do the thing where Terminal Force closes and you open again after you had ran rage. Now I have the root shell in Terminal.

When I run command:

$ su
not found

($) is my command line, and (blanks) is what came back. ^^
Is it suppose to say "not found"? or is it suppose to say something else? I did exactly what I was suppose to do. It wasn't all that hard. Before I did the rage command, it was

$ su
Permission Denied

That seems normal. But after I supposedly temporarily root my phone, if I open ROM manager, it tells me that I need to root my phone. What tha truck? Am I missing something?

I run:

$ /data/local/gfree -f

{export PATH=/data/local/bin:$PATH
# # /data/local/gfree -f
--secu_flag off set
--cid set. CID will be changed to: 11111111
--sim_unlock. SIMLOCK will be removed
Section header entry size: 40
Number of section headers: 44
Total section header table size: 1760
Section header file offset: 0x00015398 (86936)
Section index for section name string table: 41
String table offset: 0x000151df (86495)
Searching for .modinfo section...
- Section[16]: .modinfo
-- offset: 0x000011cc (4556)
-- size: 0x000000c4 (196)
Kernel release: 2.6.32.17-g9ab3677
New .modinfo section size: 204
Attempting to power cycle eMMC... OK.
Write protect was successfully disabled.
Searching for mmc_blk_issue_rq symbol...
- Address: c029c72c, type: t, name: mmc_blk_issue_rq, module: N/A
Kernel map base: 0xc029c000
Kernel memory mapped to 0x40002000
Searching for brq filter...
- Address: 0xc029c72c + 0x34c
- 0x2a000012 -> 0xea000012
Backing up current partition 7 and patching it...
patching secu_flag: 0
Done.}

I run command:

$sync

# {sync}

I run command:

$ /data/local/tmp/root

# {/data/local/tmp/root
mkdir failed for /system/xbin, File exists
cp: can't stat '/system/xbin/busybox': Not a directory
Unable to chmod /system/xbin/busybox: Not a directory
/data/local/tmp/root: /system/xbin/busybox: not found
cp: not found
cp: not found
Unable to chmod /system/bin/su: No such file or directory
#}

(mkdir failed for /system/xbin, File exists) This is where I think I'm messing up. The directions say it should state:

( mkdir: /system/xbin already exists)

See the difference? The directions doesn't say "Failed" while mines does.

Thanks for any help. And sorry. I completely changed the question.