Use SSH-Agent

Use SSH-Agent 2015/04/15

	Use SSH-Agent to automate inputting passphrase on key-pair authentication.
[1]	It's necessarry to set key-pair first.
[2]	How to use SSH-Agent.

# start SSH-Agent [cent@dlp ~]$  eval `ssh-agent`  Agent pid 2168 # add Identity [cent@dlp ~]$  ssh-add  Enter passphrase for /home/cent/.ssh/id_rsa: Identity added: /home/cent/.ssh/id_rsa (/home/cent/.ssh/id_rsa) # confirm [cent@dlp ~]$  ssh-add -l  2048 xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:4c:b2 /home/cent/.ssh/id_rsa (RSA) # try to conenct with SSH without passphrase [cent@dlp ~]$  ssh node01.server.world hostname  node01.server.world # exit from SSH-Agent [cent@dlp ~]$  eval `ssh-agent -k`  Agent pid 2168 killed