switch#wr t
...
!
ip rcmd rcp-enable
ip rcmd rsh-enable
ip host gate 192.168.X.1
ip rcmd remote-host root gate root enable
!

gate# apt-get install rsh-client

gate# rsh switch "sh run"

gate# rsh switch "dir flash:"

gate# cat > conf.txt 
int f0/1
shut
end
<Ctrl>-D

gate# rcp conf.txt switch:running-config

gate# rsh switch "sh int f0/1"

gate# rcp switch:startup-config conf.bak

gate# rsh switch "dir flash:/"

gate# rcp switch:flash:/c2900XL-c3h2s-mz.120-5.3.WC.1.bin ios.bak 

gate# file ios.bak 
ios.bak: MS-DOS executable (EXE)