Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: ssh stops a while loop
Top Forums Shell Programming and Scripting ssh stops a while loop Post 302177631 by bkdias26 on Friday 21st of March 2008 09:56:49 PM
Old 03-21-2008
ssh stops a while loop
The while loop exits (early) when a simple ssh command is run.
#!/bin/ksh
#set -x
#-------------------------------------------------------------------------
# Functions Section
#-------------------------------------------------------------------------
while :
do
cat list.txt|while read TypeB; do
if [ $TypeB = 1 ]; then
echo "#1"
fi
if [ $TypeB = 2 ]; then
echo "#2"
ssh ftadmin@XXX.81.204.54 "date"
fi
if [ $TypeB = 3 ]; then
echo "#3"
fi
done
sleep 5
done
exit

cat list.txt
1
2
3

Results when the ssh statement is commented out is:
#1
#2
#3
but when I do the ssh statement:
#1
#2

Then it sleeps. Can anyone explain this and tell me how I get around it.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

ssh and executing a for loop

Hi all, I am trying to run a script which is expected to do: on the remote machine, There are two directories /export/home/abc1,/export/home/abc2 i am trying to do, ssh SERVERNAME "for i in `ls -l /export/home/abc*|awk '{print $9}'`; do cd $i; ls -l; done" But its not working ,iam... (11 Replies)
Discussion started by: Jartan
11 Replies

2. Shell Programming and Scripting

using ssh with a for loop

How do you do an ssh on a for statement. I have done ssh on individula lines of code before with no problems. #!/usr/bin/ksh cat server_list.txt | while read line do ssh $line "for i in `lslpp -l |grep tsm` do lslpp -Lc $i |grep -v State |tr ':' ',' |awk -F, '{print $2, "," ,... (4 Replies)
Discussion started by: din
4 Replies

3. UNIX for Advanced & Expert Users

ssh-keygen stops working

Hey guys, I was using ssh-keygen settings for a long time to login on remote machines without password. 2 days back it suddenly stops working, i tried by reset all ssh-keygen setting but it not works. what could be the reason of this issue and how can i resolve this? (2 Replies)
Discussion started by: RohitKJ
2 Replies

4. Shell Programming and Scripting

ssh inside a for loop

Hi, The requirement is to ssh to unix servers and oracle databases, to perform some monitoring activity. I'm using shell script to perfom this. I pass the server details and database to a variable ... SERVERS="SERVER1 SERVER2 SERVER3" DATABASE="DB1 DB2 DB3" for i in $SERVERS do ssh... (2 Replies)
Discussion started by: senthil3d
2 Replies

5. Shell Programming and Scripting

Script with infinite loop stops after sometime

Hi I am working on a server that is set up and maintained by a third party. It seems whenever I run bash scripts in the background (with a &) with while loops in them they seem to me killed in around 2.5 hours. ( I am running them as a normal user with no special privileges ) . Is there a... (3 Replies)
Discussion started by: pkabali
3 Replies

6. UNIX for Dummies Questions & Answers

ssh and for loop

Hi all, I am facing an issue while trying to access a for loop variable inside ssh. Can anyone please help me with what this issue is, the following is the code that I have -> IMPL_LOG_FOLDERS=(transaction_logs invalid_transaction_logs) sshg3 ftp_id@boxname << EOS for log_folder in... (5 Replies)
Discussion started by: anindyabecs
5 Replies

7. UNIX for Dummies Questions & Answers

while loop stops after a function...

my ksh script is not working... i wanna remove lines in file2.txt from file1.txt # cat file1.txt this is line one this is line two this is line three this is line four this is line five # cat file2.txt this is line two this is line three # cat my_script.ksh #!/bin/ksh i=1 y=1... (8 Replies)
Discussion started by: curtis911
8 Replies

8. Shell Programming and Scripting

while loop stops after first iteration - remote ssh exit command problem?

I have written the following script to update some Debian boxes. #!/bin/bash mxg_hosts_file="/etc/mxg/ssh-hosts" while read line ; do mxg_host="$(echo ${line} | awk -F":" '{print $1}')" mxg_port="$(echo ${line} | awk -F":" '{print $2}')" echo "Connecting and Upgrading... (3 Replies)
Discussion started by: jelloir
3 Replies

9. AIX

Need help on for loop inside ssh

Hi, I am having a file like, #cat file Jun 19 13:08 Jun 19 13:08 Jun 19 13:08 Jun 19 13:14 when I run the below comamnd locally it will work fine, IFS=$'\n'; for i in $(cat file) ;do echo "HI $i" ; done And the output is, HI Jun 19 13:08 HI Jun 19 13:08 HI Jun 19 13:08 HI... (1 Reply)
Discussion started by: sumanthupar
1 Replies

10. Shell Programming and Scripting

Unable to loop with ssh

I read a file (iplist.txt) ine-by-line in a loop which has the list of all the server hostnames. With each hostname read; I do ssh and fire multiple commands to gather information about that systemas shown below. #!/bin/bash while IFS='' read -r line || ]; do echo "Text read from file:... (3 Replies)
Discussion started by: mohtashims
3 Replies

LEARN ABOUT SUSE

ssh-keysign

SSH-KEYSIGN(8)						    BSD System Manager's Manual 					    SSH-KEYSIGN(8)

NAME

     ssh-keysign -- ssh helper program for host-based authentication

SYNOPSIS

     ssh-keysign

DESCRIPTION

     ssh-keysign is used by ssh(1) to access the local host keys and generate the digital signature required during host-based authentication with
     SSH protocol version 2.

     ssh-keysign is disabled by default and can only be enabled in the global client configuration file /etc/ssh/ssh_config by setting
     EnableSSHKeysign to ``yes''.

     ssh-keysign is not intended to be invoked by the user, but from ssh(1).  See ssh(1) and sshd(8) for more information about host-based authen-
     tication.

FILES

     /etc/ssh/ssh_config
	     Controls whether ssh-keysign is enabled.

     /etc/ssh/ssh_host_dsa_key, /etc/ssh/ssh_host_rsa_key
	     These files contain the private parts of the host keys used to generate the digital signature.  They should be owned by root, read-
	     able only by root, and not accessible to others.  Since they are readable only by root, ssh-keysign must be set-uid root if host-
	     based authentication is used.

SEE ALSO

     ssh(1), ssh-keygen(1), ssh_config(5), sshd(8)

HISTORY

     ssh-keysign first appeared in OpenBSD 3.2.

AUTHORS

     Markus Friedl <markus@openbsd.org>

BSD
								   May 31, 2007 							       BSD
All times are GMT -4. The time now is 06:26 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy