Solaris

I run it as following , but it doesn't work, could you tell me what's wrong with it? it's solaris 10 system, I wonder whether the version disable the feature, how to verify that?

1.
$ pwd
/home/steven
$ id
uid=100(steven) gid=1(other)
-rwsrwxr-x 1 etrust root 49 2月 27 01:02 modifyfile
-rwx------ 1 etrust root 56 2月 27 01:02 etrustfile

modifyfile will modify the content of etrustfile. It should be accessed by etrust only. and I set modifyfile as rws. I want to run modifyfile as steven, but it shows I can't modfiy the etrustfile still. what's the porblem?

$ cat modifyfile
echo "add this line to etrustfile" >> etrustfile
$ modifyfile
modifyfile: etrustfile: cannot create

Thanks

Read this thread and the thread I linked above. You have no
#! /usr/bin/ksh
type of line. You need that. Read the thread I wrote that explains why.

Thanks.

It works now.