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Top Forums UNIX for Beginners Questions & Answers Assistance to connect to servers via ssh once and collect various commands into separate variables Post 303039600 by RudiC on Thursday 10th of October 2019 04:09:51 AM
Old 10-10-2019
Thanks, MadeInGermany, for pointing that ssh -n option out. Still, the commands are passed as such (no backtics ``!) to the remote server, so uname -r will be executed remotely.


The script was tested successfully as given in post #4, admittedly on one single server only. The respective variables were correctly filled with the remote info. If something does not work as expected, start over and test stepwise:
- log into the respective remote server(s) and interactively run the commands as given. They should give a one line output each. Multiline output will make the approach fail.
- run the entire ssh command on one server and with one remote command, then with multiple commands, reading results into local variables
- test remote access on all servers, with one command, and then with multiple. If one server (the 50th?) fails, repeat former steps on this one. The error may be due to a remote inconsistency.

- include thorough debuggung / error handling between command (blocks).


I quickly verified the code reading multiple remote servers from a SOURCE_FILE, and it works. echo the remote IP before running the ssh command.
This User Gave Thanks to RudiC For This Post:
 

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XINE-REMOTE(1x) 														   XINE-REMOTE(1x)

NAME
xine-remote - a small tool to connect xine remote control server. SYNOPSIS
xine-remote [options] DESCRIPTION
This manual page documents briefly the xine-remote tool. xine-remote can replace a raw telnet connection to a xine remote control server. It use the readline facilities (completion, vi/emacs shortcuts, command history, etc...). By default, it try to connect the localhost, using the default port (see xine(1)). OPTIONS
The program follow the usual GNU command line syntax, with long ioptions starting with two dashes (`-'). A summary of options are included below. -H, --host <hostname> Try to connect <hostname>. -P, --port <port> Try to connect the host using <port>. -c, --command <command> Send <command> to server then quit. The command should be single quoted if it contain spaces or special characters. -n, --noconnect Do not initiate the connection on startup. -v, --version Display version. -h, --help Display options summary. COMMANDS
Few commands are available, which are used to open or close a connection: ? Display available commands (the xine-remote ones + server ones when connection is established). help <command> Display the purpose of <command>, if that is omitted, display available commands. syntax <command> Display the usage of <command>. version Display version. open <server[:port]> Open connection to server. A port can be optionally specified, using colon (:) separator. close Close connection. quit Leaving xine-remote. SEE ALSO
xine(1). AUTHOR
This manual page was written by Daniel Caujolle-Bert <f1rmb@users.sourceforge.net> for the xine project. The xine project 2002-04-16 XINE-REMOTE(1x)
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