Need help with script comparing RPMs

learnerlearner · 04-20-2009, 10:45 AM

Hi everyone...
I have a script for comparing RPMs installed as below:

#!/bin/bash -vx
##VARIABLES used below are defined in my profile and am importing them before i use them
rm -f list.log
#Extract the RPMs from RPM Database on each of the server (there are around 20 servers)
for i in $SERVER; do
echo -n "$i" >> list.log
echo "" >> list.log
ssh $i 'rpm -qa | grep '$CURRENT_VER' ' >> list.log
done

#Extract Info from the Delivery Server (this is the master server from where i take the RPMs for installing on other servers)
rm -f $DELIVERY_LOG
for j in $WEBDAV_SERVER; do
echo $DELIVER_DIR
ssh <user_name>@$j 'find '$DELIVER_DIR' -type f -name "vst3*.rpm" -printf %f\\n ' >> $DELIVERY_LOG
done

#Now, i get two files list.log and $DELIVERY_LOG. And here is what i am finding the problem.
# Compare the files delivery and list two get the difference.
Now here is what i am facing the problem.
1. I need to sort the $DELIVERY_LOG taking only higher version of the RPM and make it $FINAL_LOG
2. I need to compare $FINAL_LOG with the list.log and i should get the output as below
the RPM in $FINAL_LOG is missing on the server *$i
Will i have to create a property file which has which all RPMs are present on each server first? or is there any other method

i am a newbee to linux scripting....Could anyone help me out in this

pixellany · 04-20-2009, 11:06 AM

welcome to LQ!! This kind of thing needs to go into a new thread---you have jumped into an existing thread which is pretty much unrelated.

Reported to be moved...

jtmoon · 04-22-2009, 10:30 PM

Hi,
Here is the bash script code that should allow doing a
while loop over piped-in lines of text.

Code:

ls -1 "${MY_DIRECTORY}" | while read -e myLine ; do
  echo "The current line is '${myLine}'" ;
  # ...useful code goes here...
done

The key part is piping the output of ls -1 to while read -e .

Example output:

Code:

$ ls -1
bar
foo
foo bar

$ ls -1 | while read -e myLine ; do echo line is \'${myLine}\' ; done
line is 'bar'
line is 'foo'
line is 'foo bar'

-J_Tom_Moon_79