如果你用rsh時, 出現...

connect to address 192.168.1.1: Connection refused
Trying krb4 rsh...
connect to address 192.168.1.1: Connection refused
trying normal rsh (/usr/bin/rsh)

那是因為現在Server都裝了kerberos, 所以預設先去用/usr/kerberos/bin/rsh, 但是...通常遠端設備沒那麼高檔, 就算是server可能也沒人設kerberos, 所以第一次try一定fail.

如果不想看到前面討人厭的錯誤訊息, 就請直接指定/usr/bin/rsh就ok了.

或你試

# echo $PATH
/usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/X11R6/bin:/root/bin

你可以修改PATH. 改一下看看.. /etc/profile.d/krb5.csh /etc/profile.d/krb5.sh中的PATH設定順序.