09-16-2013
When you say
do you mean you're connecting to a server using a network protocol such as ssh or telnet?
If after typing exit you're not back into your
there can be more than 1 session currently opened. Try typing exit one or 2 more times and see what happens.
Let us know how it goes.
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1. Shell Programming and Scripting
Hi,
Can someone please help me in resolving this issue -
I am doing SSH from a server 1 to another server 2 and executing some statements there and then automatically exit out of second server to the first where script was getting executed.
Can you please help me script this code ?
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I have had a look around and can not find the answer, I dont think im searching for the right phrase.
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hi
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5. Shell Programming and Scripting
hi,
I am using the below line to run a script from remote server(say server A) to another server(say server B).
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Well. I was recently given access to my work's machine via SSH. I'm pretty sure it's a SUSE machine, uname -a gives
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Hi,
I am on unix serverA where i have a script called A.sh
more A.sh
echo "Hello"
ssh user1@serverB
echo "Welcome"
After the ssh takes me to serverB; i execute a script on serverB called B.sh
more B.sh
echo " You are serverB"
exit
exit
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LEARN ABOUT CENTOS
shell-quote
SHELL-QUOTE(1) User Contributed Perl Documentation SHELL-QUOTE(1)
NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$SHELL -c". This doesn't work as intended:
ssh host touch 'hi there' # fails
It creates 2 files, hi and there. Instead, do this:
cmd=`shell-quote touch 'hi there'`
ssh host "$cmd"
This gives you just 1 file, hi there.
process find output
It's not ordinarily possible to process an arbitrary list of files output by find with a shell script. Anything you put in $IFS to
split up the output could legitimately be in a file's name. Here's how you can do it using shell-quote:
eval set -- `find -type f -print0 | xargs -0 shell-quote --`
debug shell scripts
shell-quote is better than echo for debugging shell scripts.
debug() {
[ -z "$debug" ] || shell-quote "debug:" "$@"
}
With echo you can't tell the difference between "debug 'foo bar'" and "debug foo bar", but with shell-quote you can.
save a command for later
shell-quote can be used to build up a shell command to run later. Say you want the user to be able to give you switches for a command
you're going to run. If you don't want the switches to be re-evaluated by the shell (which is usually a good idea, else there are
things the user can't pass through), you can do something like this:
user_switches=
while [ $# != 0 ]
do
case x$1 in
x--pass-through)
[ $# -gt 1 ] || die "need an argument for $1"
user_switches="$user_switches "`shell-quote -- "$2"`
shift;;
# process other switches
esac
shift
done
# later
eval "shell-quote some-command $user_switches my args"
OPTIONS
--debug
Turn debugging on.
--help
Show the usage message and die.
--version
Show the version number and exit.
AVAILABILITY
The code is licensed under the GNU GPL. Check http://www.argon.org/~roderick/ or CPAN for updated versions.
AUTHOR
Roderick Schertler <roderick@argon.org>
perl v5.16.3 2010-06-11 SHELL-QUOTE(1)