Single quotes suppress shell's expansion. Use double quotes for this special case. And, you should prefer the $(...) construct to backticks `...` for "command substitution".
In short: all you can come up with. Unneeded information is just a (small) waste of bandwidth, missing information makes help impossible with great regularity.
Now, that is at least something.
Issue the command
oslevel -s
To get the exact version. But for any halfways recent version of AIX i can at least answer the question about the shell version. It is a Korn shell 88 and it has been this way since the glorious days of AIX 4.1 (about 20 years ago):
# Version M-11/16/88f
The stat command some mentioned here does not exist on AIX systems, but the command istat does. I suggest you read the man page of this one. Output looks like this (AIX 7.1.3 ML4):
# istat /usr/bin/ls
Inode 238 on device 10/5 File
Protection: r-xr-xr-x
Owner: 2(bin) Group: 2(bin)
Link count: 1 Length 28542 bytes
Last updated: Thu Mar 12 17:20:56 2015
Last modified: Sat Mar 8 20:49:55 2014
Last accessed: Sat Jul 2 16:32:49 2016
I hope this helps.
bakunin
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