[CentOS] scp -rp behavior(SOLVED)

[J Martin Rushton]

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<big snip>

> Why "slash": /.thunderbird in case of your example? Because if you
> do not specify absolute path beginning with / the ssh daemon
> prepends your relative path with its `pwd` it runs in, and its
> `pwd` is "/")

Not so.  Consider:

$ ssh pi-1 pwd
/home/jmr

If you examine what is happening, the daemon creates an unprivileged
process for the user, and that process performs the operation.  Were
it to be otherwise you would have a gaping hole in security.

$ ssh pi-1 ps -f
UID        PID  PPID  C STIME TTY          TIME CMD
jmr       3054  3050  0 04:22 ?        00:00:00 sshd: jmr at notty
jmr       3055  3054  0 04:22 ?        00:00:00 ps -f
$ ssh pi-1 ps -ef | grep ssh
root      2432     1  0 Feb28 ?        00:00:00 /usr/sbin/sshd
root      3056  2432  0 04:23 ?        00:00:00 sshd: jmr [priv]
jmr       3060  3056  0 04:23 ?        00:00:00 sshd: jmr at notty

The first command shows the unprivileged process shelling out the ps
command as expected.  Note that the parent daemon is running as
jmr at notty.  The second command shows master daemon, the privileged
child to handle the connection and the unprivileged jmr at notty.
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