08-13-2006
Unix Shell Novice - File Manipulation
Hi,
I am brand new to unix and am hoping someone can start me in the right direction.
I want to be able to put the results of a file command such as wc -l filename into a variable which I can then use to test against another variable...i.e. I need to show the nth line of a file, but need to determine if the file contains at least n lines. currently the output from wc -l filename gives me a return of n filename - all I want is n as a numerical value.
Secondly, is there a way to retrieve the nth line of a file using a single command (similar to head or tail, but actually giving the line number?)
If anyone can help it would be appreciated.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I really want to get into unix scripting,work with RS6000 -AIX.
How do i get started,what books are good for beginners,i am very desperate
I have no programming background but ready to scrafice all my time in learning .please help.
PLEASE,PLEASE PLEASE ,HELP....
Any advice will realy... (2 Replies)
Discussion started by: Ghanaman
2 Replies
2. UNIX for Dummies Questions & Answers
Heya all Im just reading up on the solaris o/s and unix and i just have the following qustions
1) is the solaris o/s the same as Unix if not how are they different - i.e. are they different operating systems?
2) Can the Unix be loaded from CD without affectin windows o/s just like linux... (2 Replies)
Discussion started by: new214
2 Replies
3. UNIX for Dummies Questions & Answers
Hi,
I have a table (e.g.):
a 1 e 4 5 6
b 2 r 4 4 2
c 5 r 3 7 1
d 9 t 4 4 9
.
.
What I need to do is to set the values of some values in column 2 to negative values. For example, the values 2 and 9 should become -2 and -9 in the modified file. How should I go about... (2 Replies)
Discussion started by: pc2001
2 Replies
4. Shell Programming and Scripting
Hello,
I have mysql binary file which logs all the database queries and i to insert all queries log in to database. First i coverted binary file to text file. and start playing with it. Text file contains following queries, some samples are,
SET INSERT_ID=1;
INSERT INTO test... (0 Replies)
Discussion started by: mirfan
0 Replies
5. UNIX Desktop Questions & Answers
Hi all,
I am new to the forum and this is my first post.
I am an IT professional within a prodominently Windows Environment :D.
I would like to learn the basics of UNIX/Solaris/Red Hat etc to create a niche skill on my CV. How do I go about it?
-Which OS do I download and from where?... (6 Replies)
Discussion started by: mightymo26
6 Replies
6. AIX
I need a script that will raname the following file names that beging with 08078* in unix as follows:
Rename 08078-08201103-H00044-CA.835
as follows:
08078-110820-H000440CA.835
Bascially it will do this:
1) Keep the first 6 positons.
2) Move the yr from the file name to be the... (4 Replies)
Discussion started by: mrn6430
4 Replies
7. Shell Programming and Scripting
Hi I recently joined a project where I have been asked to generate a report using shell script accessing UNIX box.
I have no idea on how to do it as I am a beginner and learning shell scripts.
Suppose I have a XML:
<XYZRequest>
<effectiveDate>someDate</effectiveDate>... (2 Replies)
Discussion started by: vat1kor
2 Replies
8. Shell Programming and Scripting
Hello , How all doing today.. I have a little doubt in Unix (6 Replies)
Discussion started by: adisky123
6 Replies
9. Shell Programming and Scripting
i have a file something like this :
start:
01:00:00
01:30:00
02:30:00
05:30:00
end:
01:13:00
02:00:00
02:40:00
05:45:00
and i want (end - start) total run time in below format:
run:
00:13:00
00:30:00
00:10:00
00:15:00 (4 Replies)
Discussion started by: Acme
4 Replies
10. Shell Programming and Scripting
Hi,
I have a file about 100 lines. Each line is about 2000 characters (each line is fixed length). In middle of each line is following constant value
0000040029892586
Now, I want to go through each line and increment by 1.
So, line 1 will have 586
line 2 will have 587, line 3 will have... (4 Replies)
Discussion started by: jakSun8
4 Replies
LEARN ABOUT SUSE
cpanplus::shell
CPANPLUS::Shell(3pm) Perl Programmers Reference Guide CPANPLUS::Shell(3pm)
NAME
CPANPLUS::Shell
SYNOPSIS
use CPANPLUS::Shell; # load the shell indicated by your
# config -- defaults to
# CPANPLUS::Shell::Default
use CPANPLUS::Shell qw[Classic] # load CPANPLUS::Shell::Classic;
my $ui = CPANPLUS::Shell->new();
my $name = $ui->which; # Find out what shell you loaded
$ui->shell; # run the ui shell
DESCRIPTION
This module is the generic loading (and base class) for all "CPANPLUS" shells. Through this module you can load any installed "CPANPLUS"
shell.
Just about all the functionality is provided by the shell that you have loaded, and not by this class (which merely functions as a generic
loading class), so please consult the documentation of your shell of choice.
BUG REPORTS
Please report bugs or other issues to <bug-cpanplus@rt.cpan.org<gt>.
AUTHOR
This module by Jos Boumans <kane@cpan.org>.
COPYRIGHT
The CPAN++ interface (of which this module is a part of) is copyright (c) 2001 - 2007, Jos Boumans <kane@cpan.org>. All rights reserved.
This library is free software; you may redistribute and/or modify it under the same terms as Perl itself.
SEE ALSO
CPANPLUS::Shell::Default, CPANPLUS::Shell::Classic, cpanp
perl v5.12.1 2010-04-26 CPANPLUS::Shell(3pm)