10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi, all
I have a csv file that I would like to remove duplicate lines based on 1st field and sort them by the 1st field. If there are more than 1 line which is same on the 1st field, I want to keep the first line of them and remove the rest. I think I have to use uniq or something, but I still... (8 Replies)
Discussion started by: refrain
8 Replies
2. Shell Programming and Scripting
Dear community,
I have to remove duplicate lines from a file contains a very big ammount of rows (milions?) based on 1st and 3rd columns
The data are like this:
Region 23/11/2014 09:11:36 41752
Medio 23/11/2014 03:11:38 4132
Info 23/11/2014 05:11:09 4323... (2 Replies)
Discussion started by: Lord Spectre
2 Replies
3. Shell Programming and Scripting
hi,
Please help me to write a command to delete duplicate lines from a file. And the size of file is 50 MB. How to remove duplicate lins from such a big file. (6 Replies)
Discussion started by: vsachan
6 Replies
4. Shell Programming and Scripting
Hey guys, need some help to fix this script. I am trying to remove all the duplicate lines in this file.
I wrote the following script, but does not work. What is the problem?
The output file should only contain five lines:
Later! (5 Replies)
Discussion started by: Ernst
5 Replies
5. Shell Programming and Scripting
Hi,
I have two files with below data::
file1:-
123|aaa|ppp
445|fff|yyy
999|ttt|jjj
555|hhh|hhh
file2:-
445|fff|yyy
555|hhh|hhh
The records present in file1, not present in file 2 should be writtent to the out put file.
output:-
123|aaa|ppp
999|ttt|jjj
Is there any one line... (3 Replies)
Discussion started by: gani_85
3 Replies
6. Shell Programming and Scripting
greetings,
i'm hoping there is a way to cat a file, remove duplicate lines and send that output to a new file. the file will always vary but be something similar to this:
please keep in mind that the above could be eight occurrences of each hostname or it might simply have another four of an... (2 Replies)
Discussion started by: crimso
2 Replies
7. UNIX for Dummies Questions & Answers
Hi please help me how to remove duplicate lines in any file.
I have a file having huge number of lines.
i want to remove selected lines in it.
And also if there exists duplicate lines, I want to delete the rest & just keep one of them.
Please help me with any unix commands or even fortran... (7 Replies)
Discussion started by: reva
7 Replies
8. Shell Programming and Scripting
Hello,
Can anyone tell Command/Script to remove duplicate lines from the file? (2 Replies)
Discussion started by: Rahulpict
2 Replies
9. UNIX for Dummies Questions & Answers
I have a log file "logreport" that contains several lines as seen below:
04:20:00 /usr/lib/snmp/snmpdx: Agent snmpd appeared dead but responded to ping
06:38:08 /usr/lib/snmp/snmpdx: Agent snmpd appeared dead but responded to ping
07:11:05 /usr/lib/snmp/snmpdx: Agent snmpd appeared dead but... (18 Replies)
Discussion started by: Nysif Steve
18 Replies
10. Shell Programming and Scripting
I am doing KSH script to remove duplicate lines in a file. Let say the file has format below.
FileA
1253-6856
3101-4011
1827-1356
1822-1157
1822-1157
1000-1410
1000-1410
1822-1231
1822-1231
3101-4011
1822-1157
1822-1231
and I want to simply it with no duplicate line as file... (5 Replies)
Discussion started by: Teh Tiack Ein
5 Replies
REFORMAIL(1) Double Precision, Inc. REFORMAIL(1)
NAME
reformail - E-mail reformatting tool
SYNOPSIS
reformail -s command [option...]
reformail -D len filename
reformail -x header:...
reformail -X header:...
reformail [options...]
See below for additional options
DESCRIPTION
The reformail program reads a message on standard input, reformats it in some way, and writes the message to standard output:
Splitting mailboxes into individual messages
The -s option splits the mbox-formatted mailbox file on standard input into individual messages. An external program is executed for each
message. The contents of each individual message will be provided to the external program on standard input.
If the FILENO environment variable is set to a number, reformail will consecutively increment FILENO each time the program is executed for
each individual message.
If FILENO is not set, it's initial value will be "000". If FILENO is set to a non-numeric value, FILENO will remain unchanged.
Detecting duplicate messages
The -D option implements a simple way to delete duplicate messages in incoming mail. filename is a file that will be approximately 'len'
bytes long. This file will be used by reformail to save message IDs seen in recent mail. reformail reads the message on standard input. If
the message has a Message-ID: header that's already in the cache file, reformail terminates with the exit code set to 0. Otherwise,
reformail terminates with the exit code set to 1.
Extracting headers
The -x and -X options extract the indicated headers from the message, and print them to standard output. Multiple -x and -X options can be
specified at the same time, and may be intermixed.
The -x option extracts and prints the contents of the header. The -X option prints the name of the header as well.
In all other situations, reformail copies the message on its standard input to its standard output, reformatting the message as follows:
OPTIONS
-a'header: value'
Append a custom header to the message if this header does not already exist. If the header is either Message-ID: or Resent-Message-ID:
and the value is empty, reformail generates a (hopefully) unique message ID for you.
-A'header: value'
Append a custom header to the message even if this header already exists. If the header is either Message-ID: or Resent-Message-ID: and
the value is empty, reformail generates a (hopefully) unique message ID for you.
-c
Concatenate multi-line headers. Headers split on multiple lines are combined into a single line.
-dn
If n is 1, each line will be terminated with CRLF. If n is 0 (default), each line will be terminated with LF. reformail reads a
message with either line terminator, and will force the message to have the specified line termination.
-f0
Remove the "From_" line from the message, if it's there.
-f1
Add the "From_" line to the message, if it's not there. reformail will attempt to generate the "From_" line from any Errors-To:,
Return-Path:, or From: headers in the message. "root" will be used if reformail is unable to determine the return address.
-i'header: value'
Appends a custom header to the message. If this header already exists it is renamed by prepending "Old-" to the name of the header.
-I'header: value'
Append a custom header to the message. If this header already exists in the message, the old header is completely removed. If the value
is empty, any existing header is completely removed, and nothing gets appended.
-R oldheader: newheader:
Rename the indicated header.
-u'header:'
If this header occurs multiple times in the message, remove all occurrences except the first one.
-U'header:'
If this header occurs multiple times in the message, remove all occurrences except the last one.
AUTOREPLIES
The autoreply options from earlier versions of mailbot have been moved into mailbot(1)[1].
BUGS
For the -a, -A, and -I options, a space after the header name and the colon is considered to be a non-empty field.
Do not provide the same header to more than one family of header-modifying options, such as -u/-U and -a/-A. Doing so yields unpredictable
results. It's better to run reformail several times (use a pipe, perhaps).
SEE ALSO
courier(8)[2], sendmail(8), mailbot(1)[1], maildrop(1)[3].
AUTHOR
Sam Varshavchik
Author
NOTES
1. mailbot(1)
[set $man.base.url.for.relative.links]/mailbot.html
2. courier(8)
[set $man.base.url.for.relative.links]/courier.html
3. maildrop(1)
[set $man.base.url.for.relative.links]/maildrop.html
Courier Mail Server 08/30/2011 REFORMAIL(1)