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Full Discussion: Need assistance with bash function
Top Forums Shell Programming and Scripting Need assistance with bash function Post 302172830 by _jade_ on Tuesday 4th of March 2008 07:43:51 PM
Old 03-04-2008
Need assistance with bash function
Hi all!

I need a little help with an imbedded fuction I am trying to write. What I am trying to do is go to a series of hosts and get the contents of an XML file, storing some of the data, along with the name of the host it was gathered from. My intent is to store this in an array for later use in the script, but I am having some issues getting the values I am looking for stored in a variable


Assumptions

PHYSICALS_FILE contains entries for hostnames
hosta
hostb
etc

Inventory.xml contains lots of stuff. I am only concerned about the 5th field on lines matching vmxCfgPath

The problem I am having is when I am trying to store the values from the "cat" line into a variable for later use. I have tried defining this line as a variable, but I think there is either an issue with defining a variable in a for loop, or something is happening when I use the pipe (|).... (see the commented out lines)

The output this gives me thus far is:

hosta
vm_number1
vm_number2
hostb
vm_number1
vm_number2
etc

What I would like to get the output to be is

hosta,vm_number1
hosta,vm_number2
hostb,vm_number1
hostb,vm_number2
etc

any insight you can offer would be greatly appreciated!!



here is my snippit (I am sure there is a better way to get this, but this works for the most part)

Code:
#!/bin/bash
PROG=`basename $0`
PHYSICALS_FILE=$1
determine_phys ()   {


exec 3< $PHYSICALS_FILE
until [ $DONE ]; do
   read <&3 LINE
   if [[ $? != 0 ]]; then
      DONE=1
      continue
   fi
echo $LINE
   if [[ $? = 0 ]]; then
     sudo ssh $LINE <<EOF
        echo $LINE
        cat /path/to/file/vminventory.xml | grep vmxCfgPath |awk -F"/" '{print $5}'
        #VM=`cat /path/to/file/vminventory.xml | grep vmxCfgPath |awk -F"/" '{print $5}'`
        #echo $LINE,$VM
	echo "___________________________________________"
        exit
EOF
   fi
done
}

determine_phys

 

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LEARN ABOUT SUSE

rbash

RBASH(1)						      General Commands Manual							  RBASH(1)

NAME

       rbash - restricted bash, see bash(1)

RESTRICTED SHELL

       If  bash  is  started with the name rbash, or the -r option is supplied at invocation, the shell becomes restricted.  A restricted shell is
       used to set up an environment more controlled than the standard shell.  It behaves identically to bash with the exception that the  follow-
       ing are disallowed or not performed:

       o      changing directories with cd

       o      setting or unsetting the values of SHELL, PATH, ENV, or BASH_ENV

       o      specifying command names containing /

       o      specifying a filename containing a / as an argument to the .  builtin command

       o      specifying a filename containing a slash as an argument to the -p option to the hash builtin command

       o      importing function definitions from the shell environment at startup

       o      parsing the value of SHELLOPTS from the shell environment at startup

       o      redirecting output using the >, >|, <>, >&, &>, and >> redirection operators

       o      using the exec builtin command to replace the shell with another command

       o      adding or deleting builtin commands with the -f and -d options to the enable builtin command

       o      using the enable builtin command to enable disabled shell builtins

       o      specifying the -p option to the command builtin command

       o      turning off restricted mode with set +r or set +o restricted.

       These restrictions are enforced after any startup files are read.

       When a command that is found to be a shell script is executed, rbash turns off any restrictions in the shell spawned to execute the script.

SEE ALSO

       bash(1)

GNU Bash-4.0							    2004 Apr 20 							  RBASH(1)
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