03-18-2011
My advice. Protecting Shell special characters in a complex "remsh" line will drive you nuts. It is so important to be aware which Shell special characters will be executed on the local computer and which will be executed on the remote computer. It is not impossible to achieve but please bear in mind the next administrator who reads your code.
The professional approach is to first proliferate the script to each of the remote servers and then invoke the script from a "remsh" command.
This approach means that you can test the script while logged in to the remote server.
This User Gave Thanks to methyl For This Post:
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Help!
I'm would like to log in su - within a script an contuine to run the commands within the script. Every time I log in as su - I have to exit for the rest of the script to run! e.g.
#!/bin/ksh
su - oracle
ps -ef |grep som <--- doesn't excute command until I log out su
oracle.... (1 Reply)
Discussion started by: bugggg
1 Replies
2. Shell Programming and Scripting
Hi folks,
I have the following configuration file:
DB_LAYER=NO
ADMIN_LAYER=NO
RTESUB_LAYER=NO
DB_HOST_NAME=tornado
ADMIN_HOST_NAME=tornado
RTESUB_HOST_NAME=tornado
RESPONSE_FILE_SR=/tmp/SR.rsp
INSTALL_SR_1=/home/Upgrade_4.7.1/Utilities/Install_SR:Y... (8 Replies)
Discussion started by: nir_s
8 Replies
3. Shell Programming and Scripting
Hi,
In ksh how can I execute something like this:
remsh newhost "for i in 1 2 3 4 5 do echo file$i; cat file$i; done"
I cannot pass the contrl J or enter in th above line which is required by the for loop.
Thanks... (1 Reply)
Discussion started by: alantang
1 Replies
4. UNIX for Advanced & Expert Users
I have a space delimited file containing: hostname OracleSID connectstring
I want to loop through the file and execute remsh to check the database processes.
cat $filename | while read HOST SID CONNECT
do
{
result=`remsh $HOST "ps -ef | grep pmon_${SID}$| grep -v grep"`
if ........ (1 Reply)
Discussion started by: joettacm
1 Replies
5. Shell Programming and Scripting
Boy I hope someone can answer this question. I've been beating my head against the wall all day trying to come up with a solution.
I have a carrot delimited file that looks like this:
ANDERSON^678934^1974^BOB
JONES^564564345^1954^ABRAHAM
SMITH^47568465^1948^JON
If I run this command:
awk... (6 Replies)
Discussion started by: Korn0474
6 Replies
6. Shell Programming and Scripting
Sorry for such a dreadful title, but I'm not sure how to be more descriptive. I'm hoping some of the more gurutastic out there can take a look at a solution I came up with to a problem, and advice if there are better ways to have gone about it.
To make a long story short around 20K pieces of... (2 Replies)
Discussion started by: DeCoTwc
2 Replies
7. Shell Programming and Scripting
( sleep 3
echo ${LOGIN}
sleep 2
echo ${PSWD}
sleep 2
while read line
do
echo "$line"
PID=$?
sleep 2
kill -9 $PID
done < temp
sleep 5
echo "exit" ) | telnet ${HOST}
while is executing only command and exits. (5 Replies)
Discussion started by: sooda
5 Replies
8. Shell Programming and Scripting
I have this code
awk -F, ' {
C5+=$5
C6+=$6
C7+=$7
C8+=$8
R=$5+$6+$7+$8
T+=R
}
{
print $0,R
}
END {
print... (7 Replies)
Discussion started by: nikhil jain
7 Replies
9. Shell Programming and Scripting
I have the below code which runs on multiple databases , but this runs one-after-one. I will need this to run in parallel so that i could save a lot of time. Please help!!! Thanks in advance
for Db in `cat /var/opt/oracle/oratab |egrep -v "ASM" |grep -v \# |cut -d\: -f1`
do
{
export... (5 Replies)
Discussion started by: jjoy
5 Replies
10. Shell Programming and Scripting
OS : RHEL 6.1
Shell : Bash
I had a similair post on this a few weeks back. But I didn't explain my requirements clearly then. Hence starting a new thread now.
I have lots of files in /tmp/stage directory as show below.
I want to loop through each files to run a command on each file.
I... (8 Replies)
Discussion started by: kraljic
8 Replies
LEARN ABOUT DEBIAN
io::async::loop::poll
IO::Async::Loop::Poll(3pm) User Contributed Perl Documentation IO::Async::Loop::Poll(3pm)
NAME
"IO::Async::Loop::Poll" - use "IO::Async" with "poll(2)"
SYNOPSIS
Normally an instance of this class would not be directly constructed by a program. It may however, be useful for runinng IO::Async with an
existing program already using an "IO::Poll" object.
use IO::Poll;
use IO::Async::Loop::Poll;
my $poll = IO::Poll->new;
my $loop = IO::Async::Loop::Poll->new( poll => $poll );
$loop->add( ... );
while(1) {
my $timeout = ...
my $ret = $poll->poll( $timeout );
$loop->post_poll;
}
DESCRIPTION
This subclass of "IO::Async::Loop" uses an "IO::Poll" object to perform read-ready and write-ready tests.
To integrate with existing code that uses an "IO::Poll", a "post_poll" can be called immediately after the "poll" method on the contained
"IO::Poll" object. The appropriate mask bits are maintained on the "IO::Poll" object when notifiers are added or removed from the set, or
when they change their "want_writeready" status. The "post_poll" method inspects the result bits and invokes the "on_read_ready" or
"on_write_ready" methods on the notifiers.
CONSTRUCTOR
$loop = IO::Async::Loop::Poll->new( %args )
This function returns a new instance of a "IO::Async::Loop::Poll" object. It takes the following named arguments:
"poll" The "IO::Poll" object to use for notification. Optional; if a value is not given, a new "IO::Poll" object will be constructed.
METHODS
$count = $loop->post_poll( $poll )
This method checks the returned event list from a "IO::Poll::poll" call, and calls any of the notification methods or callbacks that are
appropriate. It returns the total number of callbacks that were invoked; that is, the total number of "on_read_ready" and "on_write_ready"
callbacks for "watch_io", and "watch_time" event callbacks.
$poll Reference to the "IO::Poll" object
$count = $loop->loop_once( $timeout )
This method calls the "poll" method on the stored "IO::Poll" object, passing in the value of $timeout, and then runs the "post_poll" method
on itself. It returns the total number of callbacks invoked by the "post_poll" method, or "undef" if the underlying "poll" method returned
an error.
AUTHOR
Paul Evans <leonerd@leonerd.org.uk>
perl v5.14.2 2012-10-24 IO::Async::Loop::Poll(3pm)