Command pipe question

[atrxe]

I am trying to pipe the output from cat to the command line, without much luck. I have a file named ipaddr which contains 192.168.1.20, and i want to send that to ssh so my "command" would be "ssh 192.168.1.20"
I've tried
ssh < cat ipaddr
cat ipaddr | ssh

What gives?


[/list]

[kjteoh]

welp .. generally shows little understanding for how pipes work..

better is $ssh `cat ipaddr`

ps: your milege will vary

[atrxe]

Hey that works much better! Thank you.
And yes I have little understanding for how pipes work, hence the post to the "newbies" discussion.

[kjteoh]

Glad to be of service .. sorry if my last post sounded "offensive" ... was not meant to be and the try $cd /lib/modules/`uname -r` which is take you to the true modules dir. Works on Linux and its really a Shell thing thus "your milege will vary".

kjteoh

Thinking about it ... the short explanation why pipes wont work ... when you go $ssh -lmyuser_name | cat ipaddr.txt

ssh will "complete" its job followed by sending it to cat for example:-

$ssh -lmyuser_name | cat

in turn you will get replies "blah blah" generated by ssh command followed by the same "blah blah" generated by the cat command.