如何记录ssh调试信息？

Question

我需要将ssh调试信息的输出写入文件.这个

ssh -v root@172.16.248.xx > result.txt
ssh -v root@172.16.248.xx 2>&1 > result.txt

不起作用,文件result.txt为空,但在屏幕上我看到一堆调试行,如:

OpenSSH_5.3p1 Debian-3ubuntu7, OpenSSL 0.9.8k 25 Mar 2009
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug1: Connecting to 172.16.248.xx [172.16.248.xx] port 22.
debug1: Connection established.
debug1: permanently_set_uid: 0/0
etc

有没有办法将这些行重定向到文件？

Answer 1

您必须在命令行上更改重定向的顺序:

ssh -v root@172.16.248.xx >result.txt 2>&1

要不就:

ssh -v root@172.16.248.xx 2>result.txt