Full Discussion: Run awk command inside ssh
Top Forums UNIX for Advanced & Expert Users Run awk command inside ssh Post 303041640 by MadeInGermany on Saturday 30th of November 2019 08:48:18 AM
Some advanced comments (this is the Advanced forum)
If you have a string in ' ' and want to have embedded ' ' (for the remote host) then use '\'' for each embedded '
Code:
for i in `cat servers`; do ssh $i 'hostname; df -g | awk '\''/dev/ && $4+0 > 80'\'''; done

(In this example you could omit the last '' of course.)

A here document like
Code:
ssh remotehost << 'EOF'
remote commands...
EOF

(quote the first EOF!) will solve most such head aches.

The clean solution is: two scripts!
A remotescript and
the ssh script like
Code:
ssh remotehost bash < remotescript.sh

Without any local evaluation the remotescript is sent to the remote host.
 
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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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