Originally posted by: Ian_Guthrie

I've got two AIX systems, both at 6100-03-01-0921. Both systems have
the at binary at the exact same size so they are identical.On one
system if I create a file called at.cmd with the following contents:

export LIBPATH=/usr/lib:/usr/ibmcxx/lib:/usr/local/lib:/opt/IBM/db2/
V9.5/lib64:.:/home/bncprod/lib:/cb/dev/rel4.8/bl1491/lib
echo test >>$HOME/cblog.test 2>&1

My test file is created and "test" is inserted into the file. On the
other system, the job fails unless I chmod +x the actual at.cmd
file. On the first system, the permissions are simply 644 and at.cmd
is not executable.

/var/adm/cron/log shows "ian : CMD ( ian.1260994697.a ) : PID
( 524480 ) : Wed Dec 16 15:18:17 2009
Cron Job with pid: 524480 Failed

/var/spool/mail/root contains:

ksh[3]: at.cmd: 0403-006 Execute permission denied.

This is messing up some jobs that our application is trying to
run. . . any ideas wy this might e happening?
I execute at via the command line like this:

at now at.cmd
#AIX-Forum

Originally posted by: flodstrom

As what user are you running "at"? Are you writing to a NFS share (rw permissions)?

Also check if you are allowed to use "at" (in case of non root user), "at.allow", "at.deny" in /var/adm/cron (see man page for at).
#AIX-Forum

Originally posted by: Ian_Guthrie

I've made the .profiles exactly the same (except editing for
hostname). Umasks are the same, ulimits are the same. I've done an
"env" on both systems and compared and except for hostname and
username the environment variables are the same. Both tests are
executed in /tmp/test with the permissions of the directory as below
(one user is abccont, and the other abcprod.

abcprod_[/tmp/test]ls -l /tmp/test
total 8
-rw-r--r-- 1 abcprod staff 158 Dec 18 11:21 at.cmd
ancprod_[/tmp/test]ls -ld /tmp/test
drwxr-xr-x 2 abcprod staff 256 Dec 18 11:21 /tmp/test
I just don't get how "at" can fail on one but not the other?
#AIX-Forum

Originally posted by: flodstrom

Did you check the presence, and/or contents, of the at.allow and at.deny config files?

Does at run normally as root on both systems? Also make sure that the permissions of the at binary file itself is ok (especially on the host that does not work), it's supposed to be a suid binary.

Other than that I don't know what the problem might be? Although it sounds like the broken host has been "fixed" somehow. Are you the only person with root access to the hosts?
#AIX-Forum