I have 10 application servers in a distributed architecture generating their own application logs. Each server has application utility to continuously tail the log. for example following command follows tails and follows new logfiles as they are generated
Code:
server1$ logutility logtype
When I run the same command from using ssh from a terminal window on a remote server using a loop for all servers that also works fine
Code:
remoteserver $ for host in server1 server2 ..... server10
do
ssh $host "logutility logtype" >> logfile &
done
Above works fine as long as my terminal is open but stops when I close my terminal. So I put the above in an executable scriptfile to run with nohop option
Code:
#!/usr/bin/ksh
for host in server1 server2 ..... server10
do
ssh $host "logutility logtype" >> logfile &
done
and then I run the scriptfile as follows
Code:
remoteserver$ nohup scriptfile &
However, those ssh commands terminate immediately.
This is strange problem that I am unable to understand. Why does ssh command continue to run when run from terminal but terminates immediately when run from script. I would like help in understanding this behavior and also what needs to be done so that I can run that command remotely and save collective output of all 10 servers to a file on remoteserver.
Last edited by jim mcnamara; 05-09-2014 at 01:10 PM..
Hello,
I'm stuck and confused as to why when I execute things form the command line it works but when in a script it doesn't.
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root@PRD /> rsh DR
KFAFH_DR: protocol failure due to unexpected closure from server end
root@PRD /> telnet DR
Trying...
Connected to DR.
Escape character is '^]'.
Connection closed.
root@PRD /> ftp DR
Connected to KFAFH_DR.
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Discussion started by: filosophizer
2 Replies
LEARN ABOUT LINUX
irsend
IRSEND(1) User Commands IRSEND(1)NAME
irsend - basic LIRC program to send infra-red commands
SYNOPSIS
irsend [options] DIRECTIVE REMOTE CODE [CODE...]
DESCRIPTION
Asks the lircd daemon to send one or more CIR (Consumer Infra-Red) commands. This is intended for remote control of electronic devices such
as TV boxes, HiFi sets, etc.
DIRECTIVE can be:
SEND_ONCE - send CODE [CODE ...] once
SEND_START - start repeating CODE
SEND_STOP - stop repeating CODE
LIST - list configured remote items
SET_TRANSMITTERS - set transmitters NUM [NUM ...]
SIMULATE - simulate IR event
REMOTE is the name of a remote, as described in the lircd configuration file.
CODE is the name of a remote control key of REMOTE, as it appears in the lircd configuration file.
NUM is the transmitter number of the hardware device.
For the LIST DIRECTIVE, REMOTE and/or CODE can be empty:
LIST "" "" - list all configured remote names
LIST REMOTE "" - list all codes of REMOTE
LIST REMOTE CODE - list only CODE of REMOTE
The SIMULATE command only works if it has been explicitly enabled in lircd.
-h --help
display usage summary
-v --version
display version
-d --device
use given lircd socket [/var/run/lirc/lircd]
-a --address=host[:port]
connect to lircd at this address
-# --count=n
send command n times
EXAMPLES
irsend LIST DenonTuner ""
irsend SEND_ONCE DenonTuner PROG-SCAN
irsend SEND_ONCE OnkyoAmpli VOL-UP VOL-UP VOL-UP VOL-UP
irsend SEND_START OnkyoAmpli VOL-DOWN ; sleep 3
irsend SEND_STOP OnkyoAmpli VOL-DOWN
irsend SET_TRANSMITTERS 1
irsend SET_TRANSMITTERS 1 3 4
irsend SIMULATE "0000000000000476 00 OK TECHNISAT_ST3004S"
FILES
/etc/lirc/lircd.conf
Default lircd configuration file. It should contain all the remotes, their infra-red codes and the corresponding timing and wave-
form details.
DIAGNOSTICS
If lircd is not running (or /var/run/lirc/lircd lacks write permissions) irsend aborts with the following diagnostics:
"irsend: could not connect to socket"
"irsend: Connection refused" (or "Permission denied").
SEE ALSO
The documentation for lirc is maintained as html pages. They are located under html/ in the documentation directory.
lircd(8), mode2(1), smode2(1), xmode2(1), irrecord(1), irw(1), http://www.lirc.org.
irsend 0.9.0-pre1 October 2010 IRSEND(1)