Sponsored Content
Full Discussion: Rsh reboot in a loop?
Top Forums Shell Programming and Scripting Rsh reboot in a loop? Post 303026128 by MuntyScrunt on Tuesday 20th of November 2018 01:52:39 PM
Old 11-20-2018
Rsh reboot in a loop?

Hi folks. I'm trying to get the following script working for rebooting a bunch of clients. Up to now I've been using PSSH, but when they all startup again at the same time I get a few mount problems. So, I'm trying to stagger the reboot command. I know reboot will depend on what's running at the time. According to everything I've found the code attached should work.

But this script exits after the first iteration. I'm guessing the rsh command loses connection without getting a return so it produces an error "closed by remote host" which isn't getting caught

Could someone please help me out, this is starting to drive me nuts! I could do the same in python, but then I'm not learning anything.

Thanks.


Code:
#!/bin/bash
set +e

cat /nodes/nodes-128 | while read LINE; do
        echo "Attempting to reset - $LINE"
        rsh pi@$LINE sudo reboot now || true
        sleep .5
done

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

rsh command in a while loop

Hi , reading a "file1" with 2 data in each line (VAR1 and VAR2) , i'm using a while loop like this : cat file1|awk '{print $1,$2}'|while read VAR1 VA2 do echo $VAR1 echo $VAR2 done as this example shows , it works but if between do and done i use a "rsh" command , the script reads... (6 Replies)
Discussion started by: Nicol
6 Replies

2. Shell Programming and Scripting

rsh and for loop

hi I wanted to use the for loop structure in tandem with rsh command and the result to be redirected into a local .lst file within a shell script . Tried the following but does not help :confused: . rsh ABCD "cd /bosp/local/home/linus/;for i in `ls -ltr | grep ^- | awk {'print $9'}` do... (4 Replies)
Discussion started by: newbee2005
4 Replies

3. UNIX for Advanced & Expert Users

While read loop and rsh

Hi all I have a while read loop that I use to process a file line by line. The reason I am using this is due the fact that I have spaces in the line and a for loop treats the space as a delimeter for the next record. In this while loop I have a rsh. It appears that cos of the rsh, I never get... (1 Reply)
Discussion started by: 104234
1 Replies

4. Solaris

different between soft reboot and hard reboot

Hi Guru's Can any want here could explain to me the different between soft reboot and hard reboot . Best Regards Seelan (3 Replies)
Discussion started by: seelan3
3 Replies

5. Shell Programming and Scripting

rsh breaking me out of loop

Hey all I have two scripts, one script containing the guts of my code. The other simply loops through a list, calling the other script on each iteration. Problem is when I add the line `/usr/bin/rsh -l root $HOSTNAME ""` to my main script, the loop never seems to exectute any more... (1 Reply)
Discussion started by: mark007
1 Replies

6. AIX

Rsh

How to configure rsh for different users in aix? (4 Replies)
Discussion started by: vjm
4 Replies

7. Shell Programming and Scripting

rsh script with inside a for loop

hi everyone, I have the following problem: the foreach loop inside rsh doesn'work. I have tried the for command but it's not recognized. with the foreach command I don't receive any error, but it doesn't really make the cycle, ignoring the foreach and executing 1 time the echo command. Anyone has... (5 Replies)
Discussion started by: trekianov
5 Replies

8. Solaris

Reboot loop

Oh, how I regret having chosen Solaris... Really, when I had my last Solaris system ten years ago I was just happy. Like a tank: Slow, clumsy, ugly but rock-solid. Then there were 10 ten years of FreeBSD and OpenBSD. Simple install, fast, nice, good package managing, just running along. But... (11 Replies)
Discussion started by: PatrickBaer
11 Replies

9. Solaris

X2200 in reboot loop & mounting ZFS drive on other boxes

So I was patching a Solaris 10 U08 X86 X2200 box in preparation for an Oracle upgrade. Rebooted the box because the patches failed and the box will not boot successfully. I need to back up the zones on the 2 drives before going further. I pulled the drives and attempted to mount them on my Ubuntu... (0 Replies)
Discussion started by: LittleLebowski
0 Replies

10. Shell Programming and Scripting

awk, double variable, for loop and rsh

Hello folks, I've a (perhaps) simple question. In a text file I've : server_name1: directory1 server_name2: directory2 server_name3: directory3 I want to make a loop that lets me connect and operate on every server: rsh server_name1 "ls -l directory1" I've tried with awk,... (6 Replies)
Discussion started by: gogol_bordello
6 Replies
RSH(1C) 																   RSH(1C)

NAME
rsh - remote shell SYNOPSIS
rsh host [ -l username ] [ -n ] command host [ -l username ] [ -n ] command DESCRIPTION
Rsh connects to the specified host, and executes the specified command. Rsh copies its standard input to the remote command, the standard output of the remote command to its standard output, and the standard error of the remote command to its standard error. Interrupt, quit and terminate signals are propagated to the remote command; rsh normally terminates when the remote command does. The remote username used is the same as your local username, unless you specify a different remote name with the -l option. This remote name must be equivalent (in the sense of rlogin(1C)) to the originating account; no provision is made for specifying a password with a com- mand. If you omit command, then instead of executing a single command, you will be logged in on the remote host using rlogin(1C). Shell metacharacters which are not quoted are interpreted on local machine, while quoted metacharacters are interpreted on the remote machine. Thus the command rsh otherhost cat remotefile >> localfile appends the remote file remotefile to the localfile localfile, while rsh otherhost cat remotefile ">>" otherremotefile appends remotefile to otherremotefile. Host names are given in the file /etc/hosts. Each host has one standard name (the first name given in the file), which is rather long and unambiguous, and optionally one or more nicknames. The host names for local machines are also commands in the directory /usr/hosts; if you put this directory in your search path then the rsh can be omitted. FILES
/etc/hosts /usr/hosts/* SEE ALSO
rlogin(1C) BUGS
If you are using csh(1) and put a rsh(1C) in the background without redirecting its input away from the terminal, it will block even if no reads are posted by the remote command. If no input is desired you should redirect the input of rsh to /dev/null using the -n option. You cannot run an interactive command (like rogue(6) or vi(1)); use rlogin(1C). Stop signals stop the local rsh process only; this is arguably wrong, but currently hard to fix for reasons too complicated to explain here. 4.2 Berkeley Distribution April 29, 1985 RSH(1C)
All times are GMT -4. The time now is 05:25 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy