Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Get the nth word of mth line in a file
Top Forums Shell Programming and Scripting Get the nth word of mth line in a file Post 302762237 by freezelty on Monday 28th of January 2013 09:29:49 AM
Old 01-28-2013
Get the nth word of mth line in a file
Hi..

May be a simple question but I just began to write unix scripts a week ago, for sorting some huge amount of experiment data, so I got no common sense about unix scripting and really need your helps...

The situation is, I want to read the nth word of mth line in a file, and then store it in a variable. Been searching through the internet and I got an AWK command like this
Code:
var=$(awk "NR==$m{print $1}" input_file)

With this command line above I want to get the first word in line '$m', but it returns the whole line into the $var (words in the file are separated by tab)

In addition, I would need a command to get the '$n'th word in the '$m'th line, but I guess the command below would not work because the wrong formating of '$'
Code:
var=$(awk "NR==$m{print $n}" input_file)

Thank you...
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Can a shell script pull the first word (or nth word) off each line of a text file?

Greetings. I am struggling with a shell script to make my life simpler, with a number of practical ways in which it could be used. I want to take a standard text file, and pull the 'n'th word from each line such as the first word from a text file. I'm struggling to see how each line can be... (5 Replies)
Discussion started by: tricky
5 Replies

2. Shell Programming and Scripting

Read last word of nth line

Hi people; i want to read the last word of the 14th line of my file1.txt. Here is the EXACT 14th line of the file. 250 SectorPortnum=3,AuxPortInUngo=2,PortDeviceGroup=1,PortDeviceSet=1,PorDevice=1 20 >>> Set. i have to get the word Set. how can i call it and also how... (3 Replies)
Discussion started by: gc_sw
3 Replies

3. Shell Programming and Scripting

how to find third(nth) word in all line from a file

For example i'm having the below contents in a file: expr is great when you want to split a string into just two parts. The .* also makes expr good for skipping a variable number of words when you don't know how many words a string will have. But expr is lousy for getting, say, the fourth word... (2 Replies)
Discussion started by: bangarukannan
2 Replies

4. Shell Programming and Scripting

How to start reading from the nth line till the last line of a file.

Hi, For my reuirement, I have to read a file from the 2nd line till the last line<EOF>. Say, I have a file as test.txt, which as a header record in the first line followed by records in rest of the lines. for i in `cat test.txt` { echo $i } While doing the above loop, I have read... (5 Replies)
Discussion started by: machomaddy
5 Replies

5. Shell Programming and Scripting

How to Print from nth field to mth fields using awk

Hi, Is there any short method to print from a particular field till another filed using awk? Example File: File1 ==== 1|2|acv|vbc|......|100|342 2|3|afg|nhj|.......|100|346 Expected output: File2 ==== acv|vbc|.....|100 afg|nhj|.....|100 (8 Replies)
Discussion started by: machomaddy
8 Replies

6. Shell Programming and Scripting

How to read nth word from delimited text file?

Hi i am new in scripting how i can get 2 elements from first line of delimited txt file in shell scripts. AA~101010~0~AB~8000~ABC0~ BB~101011~0~BC~8000~ABC~ CC~101012~0~CD~8000~ABC0~ DD~101013~0~AB~8000~ABC~ AA~101014~0~BC~8000~ABC0~ CC~101015~0~CD~8000~ABC~ can anyone plse help?... (3 Replies)
Discussion started by: sushine11
3 Replies

7. Shell Programming and Scripting

How to remove mth and nth column from a file?

Hi, i need to remove mth and nth column from a csv file. here m and n is not a specific number. it is a variable ex. m=2 n=5 now i need to remove the 2nd and 5th line.. Please help how to do that. Thanks!!! (18 Replies)
Discussion started by: zaq1xsw2
18 Replies

8. Shell Programming and Scripting

How to grep nth word in line?

my input file content is like this GEFITINIB 403 14 -4.786873 -4.786873 -1.990111 0.000000 0.000000 -1.146266 -39.955912 483 VANDETANIB 404 21 -4.754243 -4.754243 -2.554131 -0.090303 0.000000 -0.244210 -41.615502 193 VANDETANIB 405 21 -4.737541 -4.737541 -2.670195 -0.006006 0.000000 -0.285579... (4 Replies)
Discussion started by: chandu87
4 Replies

9. Shell Programming and Scripting

Read a File line by line and split into array word by word

Hi All, Hope you guys had a wonderful weekend I have a scenario where in which I have to read a file line by line and check for few words before redirecting to a file I have searched the forum but,either those answers dint work (perhaps because of my wrong under standing of how IFS... (6 Replies)
Discussion started by: Kingcobra
6 Replies

10. Shell Programming and Scripting

Printing string from last field of the nth line of file to start (or end) of each line (awk I think)

My file (the output of an experiment) starts off looking like this, _____________________________________________________________ Subjects incorporated to date: 001 Data file started on machine PKSHS260-05CP ********************************************************************** Subject 1,... (9 Replies)
Discussion started by: samonl
9 Replies

LEARN ABOUT DEBIAN

british-english-huge

british-english-huge(5) 					   Users' Manual					   british-english-huge(5)

NAME

       british-english-huge - a list of English words

DESCRIPTION

       /usr/share/dict/british-english-huge is an ASCII file which contains an alphabetic list of words, one per line.

FILES

       There  may  be  any  number  of	word lists in /usr/share/dict/.  /etc/dictionaries-common/words is a symbolic link to the currently-chosen
       /usr/share/dict/<language> file.  /usr/share/dict/words is a symbolic link to /etc/dictionaries-common/words, and  is  the  name  by  which
       other  software should refer to the system word list.  See select-default-wordlist(8) for more information, and/or to change the currently-
       chosen word list.

       The directory /usr/share/dict can contain word lists for many languages, with name of the language in English, e.g., /usr/share/dict/french
       and  /usr/share/dict/danish  contain respectively lists of French and Danish words if they exist.  Such lists should be coded using the ISO
       8859-1 character set encoding.

SEE ALSO

       ispell(1), select-default-wordlist(8), and the Filesystem Hierarchy Standard.

HISTORY

       The words lists are not specific, and may be generated from any number of sources.

       The system word list used to be /usr/dict/words.  For compatibility, software should check that location if /usr/share/dict/words does  not
       exist.

AUTHOR

       Word  lists  are  collected and maintained by various authors.  The Debian English word lists are built from the SCOWL (Spell- Checker Ori-
       ented Word Lists) package, whose upstream editor is Kevin Atkinson <kevina@users.sourceforge.net>.

Debian								   16 June 2003 					   british-english-huge(5)
All times are GMT -4. The time now is 11:34 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy