10-01-2011
Help needed for diff to ignore a line with certain pattern
Hello Guys,
I request anyone to do me a small help in using diff command for following.
I am trying to compare two files for content and wish to keep the content after the comparison (The resultant file can't be blank)
However, the first lines would be different in both files and I need diff command to ignore these first lines in both files.
For e.g -
PHP Code:
File 1 -
Abcd
test1
test2
test3
File 2 -
Abcfdfd
test1
test2
test3
Now, I am trying to use
PHP Code:
diff -ty -B -I "^Abc" file1 file2 > file3
Here, I am trying to use a ignore flag for diff to ignore lines in both files that start with "Abc" however, I keep getting syntax errors for diff saying - Try diff --help for more information.
Can someone please tell me how do I make the above happen? Any help is greatly appreciated -
Cheers,
Morgan
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LEARN ABOUT OPENSOLARIS
bzdiff
BZDIFF(1) General Commands Manual BZDIFF(1)
NAME
bzcmp, bzdiff - compare bzip2 compressed files
SYNOPSIS
bzcmp [ cmp_options ] file1 [ file2 ]
bzdiff [ diff_options ] file1 [ file2 ]
DESCRIPTION
Bzcmp and bzdiff are used to invoke the cmp or the diff program on bzip2 compressed files. All options specified are passed directly to
cmp or diff. If only 1 file is specified, then the files compared are file1 and an uncompressed file1.bz2. If two files are specified,
then they are uncompressed if necessary and fed to cmp or diff. The exit status from cmp or diff is preserved.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Availability | SUNWbzip |
+--------------------+-----------------+
|Interface Stability | Committed |
+--------------------+-----------------+
SEE ALSO
cmp(1), diff(1), bzmore(1), bzless(1), bzgrep(1), bzip2(1)
BUGS
Messages from the cmp or diff programs refer to temporary filenames instead of those specified.
BZDIFF(1)