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Shell script using Diff


 
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# 1  
Shell script using Diff

Hello - I have a small diff script that checks 2 directories. It reports the difference in count such as wc -l, and also names the different files.

How should I get "ERROR: diff found . (host)" - when it actually finds a diff?


This is how I have written:

Code:
#!/bin/bash

            DIFF=$(diff -r /home/student/bin/dir1 /home/student/bin/dir2 | grep Only | wc -l)
            DIFF2=$(diff -r /home/student/bin/dir1 /home/student/bin/dir2 | grep Only)
                        echo "The file count difference between master folder and CE-B-CM\D folder is:
${DIFF}"
            
            
            echo "The names of the different files and their paths are:
${DIFF2}."

            echo "####################################################"


Last edited by DallasT; 04-23-2010 at 01:30 PM..
# 2  
Code:
#!/usr/local/bin/bash

DIFF=$(diff -r /path/to/dir1 /path/to/dir2)

if [[ $DIFF != "" ]]; then
echo "ERROR: diff found. $HOSTNAME"
fi

# 3  
That is only giving me my own local host name. Not the path to the host where the difference is found and the count...

i use this script, however, I am not able to flag the email subject line to either ERROR or GOOD, have a look:

Code:
#!/bin/bash
# Diff script to be used for file comparisions

DIFF=$(diff -r /home/student/bin/dir1 /home/student/bin/dir2 | wc -l) 
if [ $DIFF -ne 0 ]
then
echo "ERROR: Diff found a diff in total count of this many files: ${DIFF}."
forproblemmail=1
else
echo "No Difference"
fi

DIFF2=$(diff -r /home/student/bin/dir1 /home/student/bin/dir2 | grep Only)
if [ $? -eq 0 ]
then
echo "The names of the different files and their paths are:
${DIFF2}."
forproblemmail=1
else 
echo "No files are different"
fi

#Email Module
if [ $forproblemmail - eq 1 ] ; then
       SUBJECT="ERROR: Problem During Diff"
         else
              SUBJECT="GOOD: Complete Find Files With Success"
fi
# Email To ?
EMAIL="admin@somewhere.com"
# Email text/message
EMAILMESSAGE="/tmp/emailmessage.txt"
# send an email using /bin/mail
mail -s "$SUBJECT" "$EMAIL" < $EMAILMESSAGE


Last edited by DallasT; 05-02-2010 at 11:01 PM..
# 4  
Is the the space between the "-" and "eq" a typo?

Code:
if [ $forproblemmail - eq 1 ] ; then

# 5  
Yes! you are right.
# 6  
Quote:
Originally Posted by DallasT
Yes! you are right.
Not clear if your problem is solved now.Smilie

Was it a typo in your original script?
# 7  
Actually I am not sure if the way I flagged the error by "forproblemmail=1" , would really flag for the subject line of the email?

Also I am getting this when I run it:

Code:
line 24: [: -eq: unary operator expected

Quote:
Originally Posted by Franklin52
Not clear if your problem is solved now.Smilie

Was it a typo in your original script?

Last edited by DallasT; 05-03-2010 at 10:15 AM..

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