Hi Thanks for the response, the tape list is already in the arrary @tapes_to_eject. Then i tried to sort them like this:

 #my @tapes_to_eject=sort @_ ;
        my @tapes_to_eject=@_ ;
        #my @tapes_to_eject=sort { substr($a, 1) <=> substr($b, 1)} @_
+;
        # Test
        #print "@_";
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Then I run them through the eject command:

 `/usr/openv/volmgr/bin/vmchange -res -multi_eject -w -rn $robot_num -
+rt tld -rh $robot_host -ml $\@_[0]:$\@_[1]:$\@_[2]:$\@_[3]:$\@_[4]:$\
+@_[5]:$\@_[6]:$\@_[7]:$\@_[8]:$\@_[9]:$\@_[10]:$\@_[11]:$\@_[12]:$\@_
+[13]:$\@_[14]:$\@_[15]:$\@_[16]:$\@_[17]:$\@_[18]:$\@_[19]:$\@_[20]:$
+\@_[21]:$\@_[22]:$\@_[23]:$\@_[24]:$\@_[25]:$\@_[26]:$\@_[27]:$\@_[28
+]:$\@_[29]:$\@_[30]:$\@_[31]:$\@_[32]:$\@_[33]:$\@_[34]:$\@_[35]:$\@_
+[36]:$\@_[37]:$\@_[38]:$\@_[39]:$\@_[40]:$\@_[41]:$\@_[42]:$\@_[43]:$
+\@_[44]:$\@_[45]:$\@_[46]:$\@_[47]:$\@_[48]:$\@_[49]:$\@_[50]:$\@_[51
+]` ;
[download]

but the do not come out sorted

#my @tapes_to_eject=sort { substr($a, 1) <=> substr($b, 1)} @_;
[download]

Well, if you outcomment the sort there's little chance it will sort. And you may want to do a string compare instead of a numeric compare.