12-19-2016
Welcome to the forum.
It is always helpful to complete a request with system info like OS and shell, preferred tools, and adequate sample input and output data to avoid ambiguities and keep people from guessing.
In these fora, similar problems (identifying a column in a file and modify it) have been discussed and solved umpteen times. Did you consider searching for and adapting these? The links at the bottom of this page might be a good start.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi All
can u please let me know how to delete a file from XXX.tar.Z file with out uncompressing this file.
thanks in advance.
--Bali (0 Replies)
Discussion started by: balireddy_77
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2. UNIX for Dummies Questions & Answers
Hi
Very much a newbie to UNIX & scripting, but have identified an area within work that would benefit from being automated, as its repeated manually very often, and it looks like the ideal first script!
What I need to do is change directory to a users home (cd ~), and then find and remove a... (6 Replies)
Discussion started by: Great Uncle Kip
6 Replies
3. Shell Programming and Scripting
Hello
I want to add some value at the specific position.
My file has data like
Hello
Welcome to UNIX Forums
Need Assistance
I want to add some value at the end but at same character position for all lines.
I want my output file to have data like :
Here '_' represents blanks.... (3 Replies)
Discussion started by: dashing201
3 Replies
4. Shell Programming and Scripting
Hi everyone,
Please some help over here. (I´m using cygwing)
I have files with 40 columns and 2000 lines in average. I´m trying to change the order position as follow.
Original columns position:... (3 Replies)
Discussion started by: cgkmal
3 Replies
5. Shell Programming and Scripting
Hello ,
i have a fixed-length record file where each column has a specific position. how can retrive two or more column based on their positions in the file ?
Thank you (5 Replies)
Discussion started by: alain.kazan
5 Replies
6. UNIX for Dummies Questions & Answers
I have this space delimited large text file with more than 1,000,000+ columns and about 100 rows. I want to delete all the columns that start with NA such that:
File before modification
aa bb cc NA100 dd
aa b1 c2 NA101 de
File after modification
aa bb cc dd
aa b1 c2 de
How would I... (3 Replies)
Discussion started by: evelibertine
3 Replies
7. Shell Programming and Scripting
How to replace the position specific values in the file..
i searched a lot the forums but i couldn't able to do...
i have file like below
576666666666666666666666666 7878 897987 121 0asdas Y12
5900fbb 777 09JJJ 78798347892374 234234234364 234232898
89HJHIHIGIUG989902743748327khjkhkjlh... (6 Replies)
Discussion started by: greenworld123
6 Replies
8. Shell Programming and Scripting
Hi, im still new in unix.
i want to ask how to delete character on specific position in line, lets say i want to remove 5 character from position 1000, so characters from position 1000-1005 will be deleted.
i found this sed command can delete 4 characters from position 10, but i dont know if... (7 Replies)
Discussion started by: bluesue
7 Replies
9. Shell Programming and Scripting
Hi,
I am writing a shell script where I want that # should be added in all those lines as the first character where the pattern matches.
file has lot of functions defined
a.sh
#!/bin/bash
fn a {
beautiful evening
sunny day
}
fn b {
}
fn c {
hello world .its a beautiful day
... (12 Replies)
Discussion started by: ashima jain
12 Replies
10. Shell Programming and Scripting
I will appreciate if you help me here in this script in Solaris Enviroment.
Scenario:
i have 2 files :
1) /tmp/TRANSACTIONS_DAILY_20180730.txt:
201807300000000004
201807300000000005
201807300000000006
201807300000000007
201807300000000008
2)... (10 Replies)
Discussion started by: teokon90
10 Replies
LEARN ABOUT DEBIAN
machine-info
MACHINE-INFO(5) machine-info MACHINE-INFO(5)
NAME
machine-info - Local machine information file
SYNOPSIS
/etc/machine-info
DESCRIPTION
The /etc/machine-info file contains machine meta data.
The basic file format of machine-info is a newline-separated list of environment-like shell-compatible variable assignments. It is possible
to source the configuration from shell scripts, however, beyond mere variable assignments no shell features are supported, allowing
applications to read the file without implementing a shell compatible execution engine.
/etc/machine-info contains meta data about the machine that is set by the user or administrator.
Depending on the operating system other configuration files might be checked for machine information as well, however only as fallback.
OPTIONS
The following machine meta data parameters may be set using /etc/machine-info:
PRETTY_HOSTNAME=
A pretty human-readable UTF8 machine identifier string. This should contain a name like Lennart's Laptop which is useful to present to
the user and does not suffer by the syntax limitations of internet domain names. If possible the internet host name as configured in
/etc/hostname should be kept similar to this one. Example: if this value is Lennart's Computer an Internet host name of
lennarts-computer might be a good choice. If this parameter is not set an application should fall back to the Internet host name for
presentation purposes.
ICON_NAME=
An icon identifying this machine according to the XDG Icon Naming Specification[1]. If this parameter is not set an application should
fall back to computer or a similar icon name.
EXAMPLE
PRETTY_HOSTNAME="Lennart's Computer"
ICON_NAME=computer-laptop
SEE ALSO
systemd(1), os-release(5), hostname(5), machine-id(5)
AUTHOR
Lennart Poettering <lennart@poettering.net>
Developer
NOTES
1. XDG Icon Naming Specification
http://standards.freedesktop.org/icon-naming-spec/icon-naming-spec-latest.html
systemd 10/07/2013 MACHINE-INFO(5)