04-26-2011
Find records between two files which are not exists in one another in one
Hello all,
Would like to know how to find records between two files which are not exists in one another in one. For example: I've two files "fileA" and "fileB" and want to find record from "fileB" which does not exists in "fileA".
fileA
--------
ABCD
DEFG
GHIJ
KLMN
NOPQ
RSTU
VUWX
XYZA
fileB
--------
ZYXW
ABCD
VUVS
RQPO
NMLK
JIHG
FEDC
BAZY
KLMN
RSTU
From above, the expected result must be,
fileC
--------
ZYXW
VUTS
RQPO
NMLK
JIHG
FEDC
BAZY
Please advise how to handle such cases from command line.
Thanks,
Venkat
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
is there a direct command to find whether directory is empty, -s option doesn't seem to work.
Mark. (2 Replies)
Discussion started by: markjason
2 Replies
2. UNIX for Dummies Questions & Answers
Hi,
I need to compare todays file to yesterdays file to find deletes.
I cannot use comm -23 file.old file.new.
Because each record may have a small change in it but is not really a delete.
I have two delimited files. the first field in each file is static. All other fields may change. I... (2 Replies)
Discussion started by: eja
2 Replies
3. Shell Programming and Scripting
I want to find the size of particular file exists in a particular directory
and i wnt to zip it.
In the below mentioned code it should check the MQ.log in the
particular directory.Please correct my code so that it will check
for particular MQ.log but i could not able to check whether
the... (9 Replies)
Discussion started by: Balachandar
9 Replies
4. Shell Programming and Scripting
I will have to process multiple files with same name everyday.
My requirement is:
If on a certain day I see that filename.txt exists then the contents of the filename.txt would be added/append
to the former file contents.Each time it sees the file the content would be added.But the header ... (8 Replies)
Discussion started by: RubinPat
8 Replies
5. Solaris
Hi all,
to find a user whether he had an account on AIX box i will use commands like
"finger" , "lsuser".
I am new to solaris and we are migrating to solaris.
now i am using " more /etc/passwd | grep -i <UserID> " to find a user present in that solaris box or not.
Are der any similar... (9 Replies)
Discussion started by: firestar
9 Replies
6. UNIX for Advanced & Expert Users
my file contain 1 to 100 numbers and i want to display 50 to 60 numbers in a seperate file. how many ways this is possible in unix:confused: (3 Replies)
Discussion started by: mailkrissh
3 Replies
7. Shell Programming and Scripting
Hi, Unix Gurus,
I need find records in a file which first 5 character is empty.
eg.
12344567 233 467
345 435 456
2334455555 4t54 eee
233445555 444 aaa
eerer eree ereei want to find
345 435 456
eerer eree eree:wall:
Thanks in advance (2 Replies)
Discussion started by: ken002
2 Replies
8. UNIX for Dummies Questions & Answers
I need to check if an entry input by the user is in a file. If so, I need to run a command, and if it does not exist then it should output entry does not exist.
So I have so far...
echo "Enter record:"
read record
//command || //command
Can I use an if statement to do this? (3 Replies)
Discussion started by: itech4814
3 Replies
9. Shell Programming and Scripting
Hi Freinds ,
I have 2 files .
File 1
|nag|HYd|1|Che
|esw|Gun|2|hyd
|pra|bhe|3|hyd
|omu|hei|4|bnsj
|uer|oeri|5|uery
File 2
|nag|HYd|1|Che
|esw|Gun|2|hyd
|uer|oi|3|uery
output : (9 Replies)
Discussion started by: i150371485
9 Replies
10. Shell Programming and Scripting
Hi all
I have a list of file names in array. But this file names are not exact. so i want to search whether a file exists or not using regular expression.
code snippet:
if ;
then
echo "File exists"
else
echo "File does not exits"
fi
over here "*EQST*" should be treated as a regular... (4 Replies)
Discussion started by: Ganesh_more
4 Replies
LEARN ABOUT DEBIAN
file::find::wanted
Wanted(3pm) User Contributed Perl Documentation Wanted(3pm)
NAME
File::Find::Wanted - More obvious wrapper around File::Find
VERSION
Version 1.00
SYNOPSIS
File::Find is a great module, except that it doesn't actually find anything. Its "find()" function walks a directory tree and calls a
callback function. Unfortunately, the callback function is deceptively called "wanted", which implies that it should return a boolean
saying whether you want the file. That's not how it works.
Most of the time you call "find()", you just want to build a list of files. There are other modules that do this for you, most notably
Richard Clamp's great File::Find::Rule, but in many cases, it's overkill, and you need to learn a new syntax.
With the "find_wanted" function, you supply a callback sub and a list of starting directories, but the sub actually should return a boolean
saying whether you want the file in your list or not.
To get a list of all files ending in .jpg:
my @files = find_wanted( sub { -f && /.jpg$/ }, $dir );
For a list of all directories that are not CVS or .svn:
my @files = find_wanted( sub { -d && !/^(CVS|.svn)$/ }, $dir ) );
It's easy, direct, and simple.
WHY DO THIS
?
The cynical may say "that's just the same as doing this":
my @files;
find( sub { push @files, $File::Find::name if -f && /.jpg$/ }, $dir );
Sure it is, but File::Find::Wanted makes it more obvious, and saves a line of code. That's worth it to me. I'd like it if find_wanted()
made its way into the File::Find distro, but for now, this will do.
FUNCTIONS
find_wanted( &wanted, @directories )
Descends through @directories, calling the wanted function as it finds each file. The function returns a list of all the files and
directories for which the wanted function returned a true value.
This is just a wrapper around "File::Find::find()". See File::Find for details on how to modify its behavior.
COPYRIGHT & LICENSE
Copyright 2005-2012 Andy Lester.
This program is free software; you can redistribute it and/or modify it under the terms of the Artistic License v2.0.
perl v5.14.2 2012-06-08 Wanted(3pm)