10-08-2008
how to reverse file
i am using AIX -ksh
how can i reverse any file ,i have already try tac cmd it is not in AIX:
please help me out.
10 More Discussions You Might Find Interesting
1. IP Networking
I'm trying to create a reverse lookup file. Below are the error messages I get in the messages file, when I start named. Below the error messages is a copy of the reverse lookup file I'm trying to use. I'm using Bind version 8.1.2. Would someone recommend the correct values and if you see any... (2 Replies)
Discussion started by: Westy564
2 Replies
2. Shell Programming and Scripting
I a file with log entries... I want to sort it so that the last line in the file is first and the first line is last..
eg.
Sample file
1
h
a
f
8
6
After sort should look like
6
8
f
a
h
1 (11 Replies)
Discussion started by: frustrated1
11 Replies
3. Shell Programming and Scripting
I have to extract data from a text file which is huge in size >>10GB.
ie between two strings. If I do an ordinary sed it takes forever to come out. I was wondering if there was anyway to do the entire process in reverse and on finding the relevant string is there any way to break out of the... (5 Replies)
Discussion started by: scorreg
5 Replies
4. UNIX for Dummies Questions & Answers
I've got hundreds of lines in a file that looks like this:
Line1 CCR CCH
Line2 ICVM FBO GSC
Line3 MKF
The result should be like the one below so that I can insert them on our database.
Line1 CCR
Line1 CCH
Line2 ICVM
Line2 FBO
Line2 GSC
Line3 MKF
Thanks in advance! (4 Replies)
Discussion started by: The One
4 Replies
5. UNIX for Advanced & Expert Users
Hi Guys,
Am new to this forum .... And also to shell scripting
I need a k-shell script to reverse the contents of a file...
Please come up with the solutions...
With regards,
Anand (10 Replies)
Discussion started by: aajan
10 Replies
6. Shell Programming and Scripting
Hi all
I am trying to numerically reverse sort a file but I seem to be having trouble.
Example of file contents:
text1,1
text2,-1
text3,0
I can sort using sort -k 2n -t, filename without any problems.
However I want my results in descending order but using -r in my command... (2 Replies)
Discussion started by: pxy2d1
2 Replies
7. Shell Programming and Scripting
HI all,
i have a file called monitor.cfg and have some sections,under these sections many parameter's are there.
like.....
MONITOR.CFG
p1
p2
p3
#comments
#comments
p4
p5
p6
eof.
i want to add some new parameters in section exactly at end of comments using sed.
Thanks
surya (4 Replies)
Discussion started by: suryanarayan
4 Replies
8. Shell Programming and Scripting
Hi,
I am having a file with some data present in blocks
e.g.
----------------
some data
some more data
couple of more lines.
----------------
another set of data
more lines
----------------
even more data
more lines
----------------what I need is reverse the data.
like..
... (4 Replies)
Discussion started by: shellwell
4 Replies
9. UNIX for Dummies Questions & Answers
Hi all,
I have a file named file1as
07/25 00:10 d327490
07/25 00:55 d378299
07/25 03:58 d378299
07/25 06:14 d642035
07/25 12:44 c997126
and now i want to reverse the first filed ie 07/25 as
25/07 00:10 d327490
25/07 00:55 d378299
25/07 03:58 d378299
25/07 06:14 d642035
25/07... (5 Replies)
Discussion started by: zozoo
5 Replies
10. Shell Programming and Scripting
Hi all,
Just saw a "sed" format to reverse display the file contents, but am not geting its logic completely. I would appreciate if somebody can explain
sed '1!G;h;$!d' < filename
All I know in this is that :
G will add a new line after every line except first one... (5 Replies)
Discussion started by: dextergenious
5 Replies
TAC(1) User Commands TAC(1)
NAME
tac - concatenate and print files in reverse
SYNOPSIS
tac [OPTION]... [FILE]...
DESCRIPTION
Write each FILE to standard output, last line first. With no FILE, or when FILE is -, read standard input.
Mandatory arguments to long options are mandatory for short options too.
-b, --before
attach the separator before instead of after
-r, --regex
interpret the separator as a regular expression
-s, --separator=STRING
use STRING as the separator instead of newline
--help display this help and exit
--version
output version information and exit
AUTHOR
Written by Jay Lepreau and David MacKenzie.
REPORTING BUGS
Report tac bugs to bug-coreutils@gnu.org
GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
General help using GNU software: <http://www.gnu.org/gethelp/>
Report tac translation bugs to <http://translationproject.org/team/>
COPYRIGHT
Copyright (C) 2011 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
SEE ALSO
rev(1)
The full documentation for tac is maintained as a Texinfo manual. If the info and tac programs are properly installed at your site, the
command
info coreutils 'tac invocation'
should give you access to the complete manual.
GNU coreutils 8.12.197-032bb September 2011 TAC(1)