/etc/profile optimization and correctness

[Daniel Colascione]

On 11/29/2010 10:39 AM, Ken Brown wrote:
> On 11/29/2010 8:22 AM, Daniel Colascione wrote:
>> Starting a login shell on my system takes a painfully long time, mostly
>> because fork() is pretty slow on WOW6432 systems. I've taken a look at
>> the shell initialization routines and identified some potential savings:
>>
>> - Can't we use USERNAME to set USER instead of running `id -un`?
> 
> You can't rely on USERNAME.  For example, if I login via ssh using
> pubkey authentication, USERNAME is set to SYSTEM on my machine.
> 

Works fine for me.

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