Hi I have to grep for 2000 strings in a file one after the other.Say the file name is Snxx.out which has these strings.
I have to search for all the strings in the file Snxx.out one after the other.
What is the fastest way to do it ??
Note:The current grep process is taking lot of time per... (7 Replies)
Morning guys. Another day another question. :rolleyes:
I am knocking up a script to pull some data from a file. The problem is the file is very big (up to 1 gig in size), so this solution:
for results in `grep "^\
... works, but takes ages (we're talking minutes) to run. The data is held... (8 Replies)
Hello,
i have a very big file that has more then 80 MBytes (100MBytes). So with my CVS Application I cannot commit this file (too Big) because it must have < 80 MBytes.
How can I split this file into two others files, i think the AIX Unix command :
split -b can do that, buit how is the right... (2 Replies)
Hi experts,
I just want to know if there is a better solution to my nested while read loops below:
while read line; do
while read line2; do
while read line3; do
echo "$line $line2 $line3"
done < file3.txt
done < file2.txt
done < file1.txt >... (4 Replies)
Hello!
Is there a way i can read a file with n records as one big string using linux shell script? I have a file in the below format -
REC1
REC2
REC3
.
.
.
REC4
Record length is 3000 bytes per record and with a newline char at the end. What i need to do is
- read this file as one... (5 Replies)
Hi Gurus,
I have two big files. I need to compare the different. currently, I am using
sort file1 > file1_temp;
sort file2 > file2_tmp
diff file1_tmp file2_tmp
I can use command
grep -v -f file1 file2
just wondering which way is fast to compare two big files.
Thanks... (4 Replies)
Hi All,
I am new to this forum and this is my first post.
My requirement is like to optimize the time taken to grep the file with 40000 lines.
There are two files FILEA(40000 lines) FILEB(40000 lines).
The requirement is like this, both the file will be in the format below... (11 Replies)
I have a simple script that reads in data from fileA.txt and searches line by line for that data in multiple files (*multfiles.txt). It only prints the data when there is more than 1 instance of it. The problem is that its really slow (3+ hours) to complete the entire process. There are nearly 1500... (10 Replies)
ok guys.
this isnt homework or anything.
i have been using grep -f all my life but i am trying this for a huge file and it doesnt work.
can someone give me a replacement for grep -f pattern file for big files?
thanks (6 Replies)
Gents
Actually I have question and i need your support.
I have this NAS file system mounted as /coresys has size of 7 TB
I need to Split this file system into several file systems as mount points I mean how to can I Split it professionally to different NAS mount points how to can I decide... (2 Replies)
Discussion started by: AbuAliiiiiiiiii
2 Replies
LEARN ABOUT OSF1
merge
merge(1)merge(1)NAME
merge - three-way file merge
SYNOPSIS
merge [-Llabel1 [-Llabel3]] [-p] [-q] file1 file2 file3
DESCRIPTION
merge incorporates all changes that lead from file2 to file3 into file1. The result goes to standard output if -p is present, into file1
otherwise. merge is useful for combining separate changes to an original. Suppose file2 is the original, and both file1 and file3 are
modifications of file2. Then merge combines both changes.
An overlap occurs if both file1 and file3 have changes in a common segment of lines. On a few older hosts where diff3 does not support the
-E option, merge does not detect overlaps, and merely supplies the changed lines from file3. On most hosts, if overlaps occur, merge out-
puts a message (unless the -q option is given), and includes both alternatives in the result. The alternatives are delimited as follows:
<<<<<<< file1 lines in file1 ======= lines in file3 >>>>>>> file3
If there are overlaps, the user should edit the result and delete one of the alternatives. If the -L label1 and -L label3 options are
given, the labels are output in place of the names file1 and file3 in overlap reports.
DIAGNOSTICS
Exit status is 0 for no overlaps, 1 for some overlaps, 2 for trouble.
IDENTIFICATION
Author: Walter F. Tichy.
Revision Number: 1.1.6.2; Release Date: 1993/10/07.
Copyright (C) 1982, 1988, 1989 by Walter F. Tichy.
Copyright (C) 1990, 1991 by Paul Eggert.
SEE ALSO diff3(1), diff(1), rcsmerge(1), co(1)merge(1)