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Full Discussion: What does ssh | grep $ do?
Top Forums UNIX for Dummies Questions & Answers What does ssh | grep $ do? Post 302678041 by newbie_01 on Friday 27th of July 2012 06:10:21 AM
Old 07-27-2012
What does ssh | grep $ do?

Hi,

Am trying to debug a script and came across the line below:


Code:
/usr/bin/ssh -o StrictHostKeyChecking=yes -o NumberOfPasswordPrompts=0 os_oper@bkupserver01 storageproxy mnl001 snap list | grep $ | grep vol_pr01


Am just confused/curious about what the grep $ does? Can anyone explain that please.

Thanks in advance.
 

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SSH-ARGV0(1)						    BSD General Commands Manual 					      SSH-ARGV0(1)

NAME
ssh-argv0 -- replaces the old ssh command-name as hostname handling SYNOPSIS
hostname | user@hostname [-l login_name] [command] hostname | user@hostname [-afgknqstvxACNTX1246] [-b bind_address] [-c cipher_spec] [-e escape_char] [-i identity_file] [-l login_name] [-m mac_spec] [-o option] [-p port] [-F configfile] [-L port:host:hostport] [-R port:host:hostport] [-D port] [command] DESCRIPTION
ssh-argv0 replaces the old ssh command-name as hostname handling. If you link to this script with a hostname then executing the link is equivalent to having executed ssh with that hostname as an argument. All other arguments are passed to ssh and will be processed normally. OPTIONS
See ssh(1). FILES
See ssh(1). AUTHORS
OpenSSH is a derivative of the original and free ssh 1.2.12 release by Tatu Ylonen. Aaron Campbell, Bob Beck, Markus Friedl, Niels Provos, Theo de Raadt and Dug Song removed many bugs, re-added newer features and created OpenSSH. Markus Friedl contributed the support for SSH protocol versions 1.5 and 2.0. Jonathan Amery wrote this ssh-argv0 script and the associated documentation. SEE ALSO
ssh(1) Debian Project September 7, 2001 Debian Project
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