Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: position change
Top Forums Shell Programming and Scripting position change Post 302555500 by clx on Thursday 15th of September 2011 01:53:13 AM
Old 09-15-2011
Quote:
Originally Posted by Jairaj
How to replace last value to 3rd postion value. Because no idea how many field file contains.

"NF" is a special variable which gives the "total number of fields in the current input record".

example (FS is "|")

Code:
input	value of NF
a|b|c|d	4
a|b|c	3
a|b	2

So you can access the value of last field with $NF.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Change Position of word character

Hi, I have following format in file aaa with content below, and would like to seek help from forumer about how to change and swap the position on 2nd field. 5874957|901125| 95874960|650614| 95874966|870308| 901125 to be changed as 25-11-1990 for eg Can someone help please ?? :) ... (6 Replies)
Discussion started by: cedrichiu
6 Replies

2. Shell Programming and Scripting

How to change a segment in a particular position

I need help in removing a leading zero in a particular position. For eg.: XYZ*04567472*0099*020091231*0123*0.12 In the above line, I want to replace "*0123" with "123" and "0.12" with ".12". I want to remove the leading zero only in position number 4 and 5 (the bolded segments) I was able... (10 Replies)
Discussion started by: ananthmm
10 Replies

3. Shell Programming and Scripting

Change many columns position/order

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

4. Shell Programming and Scripting

Remove text from n position to n position sed/awk

I want to remove text from nth position to nth position couple of times in same line my line is "hello is there anyone can help me with this question" I need like this ello is there anyone can help me with question 'h' is removed and 'this' removed from the line. I want to do this... (5 Replies)
Discussion started by: elamurugu
5 Replies

5. UNIX for Dummies Questions & Answers

Change a character based on its position number

Hi I have a text file that I want to change some of the characters based on their position. My file contain multiple lines and characters should be counted continuously line by line. For example, I want to convert the 150th T to C. What can I do? Here is a portion of my file:... (10 Replies)
Discussion started by: a_bahreini
10 Replies

6. Shell Programming and Scripting

Change text at a variable position

Hi there script guru's I have an input file /tmp/in.txt of which the data is seperated by a : (example of the data) test1:zz:2000:2000:zzz te:a:2000:3333:bbb testabs:x:2004:3000:cccc I would like to run a scrip (bash) changing the data after the second ":" example Test for the value of... (3 Replies)
Discussion started by: KobusE
3 Replies

7. Shell Programming and Scripting

Need command or script to print all lines from 2nd position to last but one position

hi guys, i want command or script to display the content of file from 2nd position to last but one position of a file abcdefghdasdasdsd 123,345,678,345,323 434,656,656,656,656 678,878,878,989,545 4565656667,65656 i want to display the same above file without first and... (2 Replies)
Discussion started by: hemanthsaikumar
2 Replies

8. Shell Programming and Scripting

Search for a string at a particular position and replace with blank based on position

Hi, I have a file with multiple lines(fixed width dat file). I want to search for '02' in the positions 45-46 and if available, in that lines, I need to replace value in position 359 with blank. As I am new to unix, I am not able to figure out how to do this. Can you please help me to achieve... (9 Replies)
Discussion started by: Pradhikshan
9 Replies

9. UNIX for Beginners Questions & Answers

Delete columns with a specific title XXX, where the position change in each file

Goodmorning, I know how to cut a string and a column, and how to find a word. I have a file with over 100 columns. All columns have a title in the first line. I have to delete all columns with the XXX title. I can't use cut -f because the position of XXX columns change in each file, and in... (14 Replies)
Discussion started by: echo manolis
14 Replies

10. Shell Programming and Scripting

Search words in any quote position and then change the words

hi, i need to replace all words in any quote position and then need to change the words inside the file thousand of raw. textfile data : "Ninguno","Confirma","JuicioABC" "JuicioCOMP","Recurso","JuicioABC" "JuicioDELL","Nulidad","Nosino" "Solidade","JuicioEUR","Segundo" need... (1 Reply)
Discussion started by: benjietambling
1 Replies

LEARN ABOUT DEBIAN

chsh

CHSH(1) 							   User Commands							   CHSH(1)

NAME

       chsh - change login shell

SYNOPSIS

       chsh [options] [LOGIN]

DESCRIPTION

       The chsh command changes the user login shell. This determines the name of the user's initial login command. A normal user may only change
       the login shell for her own account; the superuser may change the login shell for any account.

OPTIONS

       The options which apply to the chsh command are:

       -h, --help
	   Display help message and exit.

       -R, --root CHROOT_DIR
	   Apply changes in the CHROOT_DIR directory and use the configuration files from the CHROOT_DIR directory.

       -s, --shell SHELL
	   The name of the user's new login shell. Setting this field to blank causes the system to select the default login shell.

       If the -s option is not selected, chsh operates in an interactive fashion, prompting the user with the current login shell. Enter the new
       value to change the shell, or leave the line blank to use the current one. The current shell is displayed between a pair of [ ] marks.

NOTE

       The only restriction placed on the login shell is that the command name must be listed in /etc/shells, unless the invoker is the superuser,
       and then any value may be added. An account with a restricted login shell may not change her login shell. For this reason, placing /bin/rsh
       in /etc/shells is discouraged since accidentally changing to a restricted shell would prevent the user from ever changing her login shell
       back to its original value.

FILES

       /etc/passwd
	   User account information.

       /etc/shells
	   List of valid login shells.

       /etc/login.defs
	   Shadow password suite configuration.

SEE ALSO

       chfn(1), login.defs(5), passwd(5).

shadow-utils 4.1.5.1						    05/25/2012								   CHSH(1)
All times are GMT -4. The time now is 09:24 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy