Question concerning DIFF


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Question concerning DIFF
# 1  
Old 01-19-2009
Question concerning DIFF

Hey,

I am running a linux shell script containing some php. I want to be able to do a DIFF on two files...if the files are identical, set an exit status of 0, and if they are different, set an exit status of 1.

I have been looking long and hard on how to do this, but I don't think that I can with DIFF. Does anyone know of any alternatives? Or anyway I can achieve this?

Here is how I am doing the DIFF:

PHP Code:
$reg_test "diff -s FILE_A FILE_B";
exec("$reg_test"); 
# 2  
Old 01-19-2009
Code:
diff -q file1 file2
if [ ! $? -eq 0 ]
then
  do something
else
  do something else
fi

Note: This is /bin/sh, not php. You can use this through the system() or passthru() functions.
# 3  
Old 01-19-2009
I'll give that a try, Thanks Smilie
# 4  
Old 01-19-2009
On my machine, if I read the man page for diff, I see:

Exit values

Exit status is 0 for no differences, 1 for some differences, 2 for errors.

So what else do you need???
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Diff 3 files, but diff only their 2nd column

Guys i have 3 files, but i want to compare and diff only the 2nd column path=`/home/whois/doms` for i in `cat domain.tx` do whois $i| sed -n '/Registry Registrant ID:/,/Registrant Email:/p' > $path/$i.registrant whois $i| sed -n '/Registry Admin ID:/,/Admin Email:/p' > $path/$i.admin... (10 Replies)
Discussion started by: kenshinhimura
10 Replies

2. UNIX for Dummies Questions & Answers

Diff with exceptions Question

So I'm currently developing an automated test system and I'm verifying my results by running a set of baselined data through and comparing the output (which is in a txt file) to a baseline results file. So of course I'm just using the diff command. Unfortunately each time I run the test there are 2... (3 Replies)
Discussion started by: Smitty0881
3 Replies

3. Shell Programming and Scripting

serach diff filename in diff location using shell scripting

Hi, I am new to shell scripting. please help me to find out the solution. I need a script where we need to read the text file(consists of all file names) and get the file names one by one and append the date suffix for each file name as 'yyyymmdd' . Then search each file if exists... (1 Reply)
Discussion started by: Lucky123
1 Replies

4. Shell Programming and Scripting

.procmailrc and uudeview (put attachments from diff senders to diff folders)

Moderator, please, delete this topic (1 Reply)
Discussion started by: optik77
1 Replies

5. Shell Programming and Scripting

Question regarding the diff command

When using the diff command how do you determine what is in one file and not the other or what are in both but slightly different.. Basically i have two files. One file contains the contents of an rcode folder on our Production box, the other contains the contents of an rcode folder on a Q1... (6 Replies)
Discussion started by: Jazmania
6 Replies

6. Shell Programming and Scripting

diff

OS : SuSE Linux 10 (zOS) I create two files test1 and test2 /home/me # more test1 1 2 3 4 5 /home/me # more test2 1 2 3 I entered the following command on cronjob and its work diff /home/me/test1 /home/me/test2 > /home/me/test3 its created test3. But the output of test3 is as... (1 Reply)
Discussion started by: sdhn1900
1 Replies

7. UNIX for Dummies Questions & Answers

Using diff

is there any way to make the diff function compare 1 folder to another instead of just file to file? also, can binary files be compared? (2 Replies)
Discussion started by: puzzler
2 Replies

8. Shell Programming and Scripting

Simulate SVN diff using plain diff

Hi, svn diff does not work very well with 2 local folders, so I am trying to do this diff using diff locally. since there's a bunch of meta files in an svn directory, I want to do a diff that excludes everything EXCEPT *.java files. there seems to be only an --exclude option, so I'm not sure... (3 Replies)
Discussion started by: ackbarr
3 Replies

9. Shell Programming and Scripting

diff 2 files; output diff's to 3rd file

Hello, I want to compare two files. All records in file 2 that are not in file 1 should be output to file 3. For example: file 1 123 1234 123456 file 2 123 2345 23456 file 3 should have 2345 23456 I have looked at diff, bdiff, cmp, comm, diff3 without any luck! (2 Replies)
Discussion started by: blt123
2 Replies

10. UNIX for Dummies Questions & Answers

diff and ed?

I am trying to use the diff command to find the differences between two txt files. From here, I wish to use the ed command to create the first file from the second file. I am fairly new to unix, and I haven't got a clue how to do this. Can anyone help me please? Cheers (2 Replies)
Discussion started by: Brototype
2 Replies
Login or Register to Ask a Question