They could also use $EUID == $UID == 0 to check the user ID, rather
than relying on an external utility.
($EUID is the effective user ID, $UID is the real uid. Please see the
bash man page for more info.)
-Kyle H
On Sun, May 31, 2009 at 6:05 AM, Michael S. Zick <open...@morethan.org> wrote:
> On Sun May 31 2009, John Kane wrote:
>> After painstakingly commenting everything out of all startup files, then
>> added them back in, I found the cause of the
>>
>> "-bash: [: =: unary operator expected"
>>
>> error that has been occurring on all Linux servers since turning on LDAP
>> TLS on INT.
>>
>> In the file:
>>
>> /etc/profile.d/krb5-workstation.sh
>>
>> The follow is causing the issue:
>>
>> if ! echo ${PATH} | /bin/grep -q /usr/kerberos/sbin ; then
>> if [ `/usr/bin/id -u` = 0 ] ; then
>> PATH=/usr/kerberos/sbin:${PATH}
>> fi
>> fi
>>
>>
>> If I add " " around the backticked command, I the bash error goes away.
>> Not sure who I need to open a ticket against :-)
>>
>
> A more general solution would be:
>
> # Am I running as user 0 (root)?
> uid=$(/usr/bin/id -u) 2>/dev/null
> if [ $uid == 0 ] ; then
>
> Note the use of white space and the change from
> an assignment to a test for equality.
>
> Usually, such problems get reported to the
> distribution producer - they know who wrote
> the script.
>
> Mike
>> Thanks,
>> John
>>
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