hi,
how would i extract a range of lines in a file by using the line number? ex: file contains:
1 title
2 i want
3 this part
4 to be taken out
5 from this file
6 and sent to
7 another file
8 not needed
9 end of file
In this case, i want to copy line number 2 to 7 on a new... (2 Replies)
hello, hope you can help me:
ive got a file called archivos
The content or structure of this file is
./chu0/filechu
./chu1/filechu
I extract each line from this file manually and redirect to a file, and it Works fine, so the command line is:
awk ‘/chu0/ {print $0}' < archivos >... (8 Replies)
Hi all,
I have a file which contains comments,dotted lines(-------),actual records etc.I need to fetch only the actual records and put into a new file neglecting/deleting other rows.I have a header record too which contains the column names for the actual records.i need to discard this too.how... (5 Replies)
I have two files
file A which have a number in every row and file B which contains few hundred thousand rows with about 300 characters in each row (csv)
What I need is to extract whole rows from B file (only these which numbers are indicated in A file)
I also need to use cygwin.
Any... (7 Replies)
This is the sample input file
b 05/Jul/2010:07:00:10
a 05/Jul/2010:06:00:10
b 05/Jul/2010:07:00:10
c 05/Jul/2010:07:10:10
d 05/Jul/2010:08:00:10
e 05/Jul/2010:09:00:10
f 05/Jul/2010:10:00:10
h 05/Jul/2010:11:00:10
i 05/Jul/2010:12:00:10
j ... (9 Replies)
Hi,
I have a file which contains DDL statements- CREATE TABLE, CREATE INDEX, ALTER TABLE etc.
I have to only pick CREATE TABLE statements from the file-
Source :
----------------------------------------------
--DDL for table abc
--------------------------------------------
CREATE TABLE... (4 Replies)
Hi all,
I have a file with many records with information as given below
ID A16L2_HUMAN Reviewed; 619 AA.
AC Q8NAA4; A5PL30; B2RPK5; Q658V4; Q6PID3; Q8NBG0;
DT 20-MAY-2008, integrated into UniProtKB/Swiss-Prot.
DT 20-MAY-2008, sequence version 2.
DT ... (1 Reply)
Hi guys
I have a several thousands line file in the following format:
n817
--------------------------------------------------
n842
--------------------------------------------------
n877
--------------------------------------------------
n513
/bb/data/rmt2db.lrl:JBSKDB 31915 75... (4 Replies)
Hi All,
I am trying to get some lines from a file i did it with while-do-loop. since the files are huge it is taking much time. now i want to make it faster.
The requirement is the file will be having 1 million lines.
The format is like below.
##transaction, , , ,blah, blah... (38 Replies)
Hi all;
Here is my file which contains a list of files (recent versions of files are in red). This file is dynamic, files versions can change at any time (versions can increment)
filename
-------------------------------------------------------
... (8 Replies)
Discussion started by: chercheur111
8 Replies
LEARN ABOUT V7
diff
DIFF(1) General Commands Manual DIFF(1)NAME
diff - differential file comparator
SYNOPSIS
diff [ -efbh ] file1 file2
DESCRIPTION
Diff tells what lines must be changed in two files to bring them into agreement. If file1 (file2) is `-', the standard input is used. If
file1 (file2) is a directory, then a file in that directory whose file-name is the same as the file-name of file2 (file1) is used. The
normal output contains lines of these forms:
n1 a n3,n4
n1,n2 d n3
n1,n2 c n3,n4
These lines resemble ed commands to convert file1 into file2. The numbers after the letters pertain to file2. In fact, by exchanging `a'
for `d' and reading backward one may ascertain equally how to convert file2 into file1. As in ed, identical pairs where n1 = n2 or n3 = n4
are abbreviated as a single number.
Following each of these lines come all the lines that are affected in the first file flagged by `<', then all the lines that are affected
in the second file flagged by `>'.
The -b option causes trailing blanks (spaces and tabs) to be ignored and other strings of blanks to compare equal.
The -e option produces a script of a, c and d commands for the editor ed, which will recreate file2 from file1. The -f option produces a
similar script, not useful with ed, in the opposite order. In connection with -e, the following shell program may help maintain multiple
versions of a file. Only an ancestral file ($1) and a chain of version-to-version ed scripts ($2,$3,...) made by diff need be on hand. A
`latest version' appears on the standard output.
(shift; cat $*; echo '1,$p') | ed - $1
Except in rare circumstances, diff finds a smallest sufficient set of file differences.
Option -h does a fast, half-hearted job. It works only when changed stretches are short and well separated, but does work on files of
unlimited length. Options -e and -f are unavailable with -h.
FILES
/tmp/d?????
/usr/lib/diffh for -h
SEE ALSO cmp(1), comm(1), ed(1)DIAGNOSTICS
Exit status is 0 for no differences, 1 for some, 2 for trouble.
BUGS
Editing scripts produced under the -e or -f option are naive about creating lines consisting of a single `.'.
DIFF(1)