Login or Register to Ask a Question and Join Our Community

AWK "make a new column that include increasing numbers"

Thread Tools Search this Thread
Top Forums Shell Programming and Scripting AWK "make a new column that include increasing numbers"
# 1  
Old 05-20-2012
Data AWK "make a new column that include increasing numbers"

please help!!!!!!
I have a file .txt that has only one column like that:

Now, i want to add a column in the left in which the values of this column increase by 0.4 , for example:
0.0  34.1
0.4  35.5
0.8  35.6
1.2  45.6

How can i do with awk instructions???
Many thanks!!!!!!!!

Last edited by Scrutinizer; 05-20-2012 at 08:14 AM.. Reason: code tags
# 2  
Old 05-20-2012
awk '{printf("%.1f %s\n", 0.4*(NR-1), $0)}' infile

Last edited by Scrutinizer; 05-20-2012 at 08:15 AM.. Reason: code tags
# 3  
Old 05-20-2012
Thank you Kevintse!!!!!!!!!!!!!!! i got it!
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

awk script to "clamp" numbers.

Hello. I'm new to the command line and am self teaching how to use it. I have a .csv file that contains the following data: 5,10,15,30,8,3,9,10,11,3,12 I'm trying to write an awk script that will "clamp" a number that is > 10 to 10. (i.e. 30 will become 10 but 5 would stay as 5) The output is... (7 Replies)
Discussion started by: Eric7giants
7 Replies

2. Shell Programming and Scripting

Substituting comma "," for dot "." in a specific column when comma"," is a delimiter

Hi, I'm dealing with an issue and losing a lot of hours figuring out how i would solve this. I have an input file which looks like this: ('BLABLA +200-GRS','Serviço ','TarifaçãoServiço','wap.bla.us.0000000121',2985,0,55,' de conversão em escada','Dia','Domingos') ('BLABLA +200-GRR','Serviço... (6 Replies)
Discussion started by: poliver
6 Replies

3. Shell Programming and Scripting

how to use "cut" or "awk" or "sed" to remove a string

logs: "/home/abc/public_html/index.php" "/home/abc/public_html/index.php" "/home/xyz/public_html/index.php" "/home/xyz/public_html/index.php" "/home/xyz/public_html/index.php" how to use "cut" or "awk" or "sed" to get the following result: abc abc xyz xyz xyz (8 Replies)
Discussion started by: timmywong
8 Replies

4. Shell Programming and Scripting

awk command to replace ";" with "|" and ""|" at diferent places in line of file

Hi, I have line in input file as below: 3G_CENTRAL;INDONESIA_(M)_TELKOMSEL;SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL My expected output for line in the file must be : "1-Radon1-cMOC_deg"|"LDIndex"|"3G_CENTRAL|INDONESIA_(M)_TELKOMSEL"|LAST|"SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL" Can someone... (7 Replies)
Discussion started by: shis100
7 Replies

5. Shell Programming and Scripting

Make scipt except from "Y","y" and "yes" to take [Enter] as being "yes"

This is the script: #!/bin/sh if ; then rm -rf /usr/share/WallpaperChanger; fi if ; then rm -rf /usr/bin/wallch; fi; if ; then rm -rf /usr/share/applications/wallch.desktop; fi if ; then rm -rf /usr/share/doc/wallch; fi if ; then rm -rf /usr/share/man/man1/wallch.1.gz; fi echo "Delete... (4 Replies)
Discussion started by: hakermania
4 Replies

6. Shell Programming and Scripting

"Join" or "Merge" more than 2 files into single output based on common key (column)

Hi All, I have working (Perl) code to combine 2 input files into a single output file using the join function that works to a point, but has the following limitations: 1. I am restrained to 2 input files only. 2. Only the "matched" fields are written out to the "matched" output file and... (1 Reply)
Discussion started by: Katabatic
1 Replies

7. Shell Programming and Scripting

Is there anyway to make awk "talks" to DB, say any awk-ODBC tools

Hi all, Is there anyway to make awk talk to DB ? So my awk script reads the data from some text file and eventually those data need to be stored in database. So is there anyway to do it in awk all tohether, say any awk-ODBC tool to make it work? (I really hate to write a cpp/java program... (4 Replies)
Discussion started by: qiulang
4 Replies

8. Shell Programming and Scripting

cat $como_file | awk /^~/'{print $1","$2","$3","$4}' | sed -e 's/~//g'

hi All, cat file_name | awk /^~/'{print $1","$2","$3","$4}' | sed -e 's/~//g' Can this be done by using sed or awk alone (4 Replies)
Discussion started by: harshakusam
4 Replies

9. UNIX for Dummies Questions & Answers

Explain the line "mn_code=`env|grep "..mn"|awk -F"=" '{print $2}'`"

Hi Friends, Can any of you explain me about the below line of code? mn_code=`env|grep "..mn"|awk -F"=" '{print $2}'` Im not able to understand, what exactly it is doing :confused: Any help would be useful for me. Lokesha (4 Replies)
Discussion started by: Lokesha
4 Replies

10. Programming

how could i make a program mixed with many "|", "<" and ">"

I have written following code to do: ls -l | wc -w, it works: but when there are not only a single "|", if there are more such as: ls -l | sort -r | sort | sort -r, This program does not work, i want to know how could i deal with it when there are more "|", another situation is that, if it mixes... (2 Replies)
Discussion started by: strugglingman
2 Replies
Login or Register to Ask a Question

Featured Tech Videos