You can run diff on each files, check the exit status and determine if it is different or similar. Here is an example:
For diff command, following exit values shall be returned:
I have a list of files that I want to compare to another list of files, how do I do that?
The first list will be my known list and hard coded, for example:
mylist="janfile.tar jarfile.jar jan.rpt.Z" etc.
The second list will be found by doing an 'ls' piped to a file:
ls > filelist.dat
... (4 Replies)
Hi all,
I need to compare the contents of 2 directories where the file contents are similar and take out the filenames whose contents does not exist within the 2 directories.
Directory1
1
2
3
4
Directory2
54
55
56
57
Does anyone has a script which can do this?
At the end of... (6 Replies)
Hi
*
I have two text files which has the file size, timestamp and the file name. I need to compare these two files and get the differences in the output format. Can anyone help me out with this.
*
cat file1.txt
*474742 Apr 18* 2010 sample.log
*135098 Apr 18* 2010 Testfile
134282 Apr 18* 2010... (7 Replies)
Hey guys,
need help with a script I'm trying to write.
Basically I need to compare the contents of a folder called "profiles"
with a list of files called "template".
when the file matches the contents of the folder it needs to set a variable called "checked" to "1"
Cookies to anyone... (4 Replies)
cat file1
a b c d e f
this is what is in my script
foreach i (`cat file1`)
foreach j (`cat file1`)
#do something here
end
end
basically i want to compare ab, ac, ad, ae, af, ba, bc, bd, be....
and also skipping aa,bb if possible..
if that anyway for me to just use 1 foreach? (2 Replies)
Hello all- New to this forum, and relatively new to using grep at the Terminal command line to work with regular expressions. I've got a background in math and some programming experience, so it's not been too difficult to learn the basics of searching through my word lists for particular types of... (13 Replies)
Hi everyone.
I have a list of files like:
file001
file002
file003
.
.
.
.
file385
file386
file387
There are more files than above, but I hope you understand what I'm trying to do here.
Is there a way I can create a loop to compare:
file001 with file385
file002 with file386 (9 Replies)
Hello everyone,
I want to compare a list of numbers in the file TEST01 to the variable $Post. Also remove any duplicate numbers. Create an if then statement indicating if the numbers listed in TEST01 is less than the number value of $Post then print an error message.
Here is the contents of... (5 Replies)
Hello,
I have two network edgelists with first two columns as nodes and the last column pearson correlation coefficient (PCC). I want to remove the edges from net1 whose edges are common with net2 && (PCC)net2>=(PCC)net1
net1.txt
A B 0.6
A C 0.7
B C 0.7
D C ... (1 Reply)
I have two file as given below which shows the ACL permissions of each file. I need to compare the source file with target file and list down the difference as specified below in required output. Can someone help me on this ?
Source File
*************
# file: /local/test_1
# owner: own
#... (4 Replies)
Discussion started by: sarathy_a35
4 Replies
LEARN ABOUT REDHAT
idiff
IDIFF(1) General Commands Manual IDIFF(1)NAME
idiff - compare two images
SYNOPSIS
idiff [options] image1 image2
DESCRIPTION
The idiff utility is invoked as follows:
idiff [options] image1 image2
Where input1 and input2 are the names of two image files that should be compared. They may be of any format recognized by OpenImageIO
(i.e., for which image-reading plugins are available).
If the two input images are not the same resolutions, or do not have the same number of channels, the comparison will return FAILURE imme-
diately and will not attempt to compare the pixels of the two images. If they are the same dimensions, the pixels of the two images will be
compared, and a report will be printed including the mean and maximum error, how many pixels were above the warning and failure thresholds,
and whether the result is PASS, WARNING, or FAILURE. For example:
$ idiff a.jpg b.jpg
Comparing "a.jpg" and "b.jpg"
Mean error = 0.00450079
RMS error = 0.00764215
Peak SNR = 42.3357
Max error = 0.254902 @ (700, 222, B)
574062 pixels (82.1%) over 1e-06
574062 pixels (82.1%) over 1e-06
FAILURE
The "mean error" is the average difference (per channel, per pixel). The "max error" is the largest difference in any pixel channel, and
will point out on which pixel and channel it was found. It will also give a count of how many pixels were above the warning and failure
thresholds.
The metadata of the two images (e.g., the comments) are not currently compared; only differences in pixel values are taken into considera-
tion.
For a complete description, see /usr/share/doc/libopenimageio-dev/openimageio.pdf.gz.
OPTIONS --help Print help message
-v Verbose status messages
-a Compare all subimages/miplevels
Thresholding and comparison options
-fail %g
Failure threshold difference (0.000001)
-failpercent %g
Allow this percentage of failures (0)
-hardfail %g
Fail if any one pixel exceeds this error (infinity)
-warn %g
Warning threshold difference (0.00001)
-warnpercent %g
Allow this percentage of warnings (0)
-hardwarn %g
Warn if any one pixel exceeds this error (infinity)
-p Perform perceptual (rather than numeric) comparison
Difference image options
-o %s Output difference image
-od Output image only if nonzero difference
-abs Output image of absolute value, not signed difference
-scale %g
Scale the output image by this factor
SEE ALSO iconvert(1), igrep(1), iinfo(1), iprocess(1), iv(1), maketx(1), oiiotool(1).
AUTHOR
OpenImageIO was written by Larry Gritz and the other authors and contributors.
This manual page was written by IRIE Shinsuke <irieshinsuke@yahoo.co.jp>, for the Debian project (and may be used by others).
May 19, 2012 IDIFF(1)