Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

only print a selected row

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting only print a selected row
# 1  
Old 10-21-2011
only print a selected row
this works:
Code:
cat file.txt| awk 'NR==45,NR==55'

but how do I assign variables instead of numbers:
this does not work:
Code:
cat file.txt | awk 'NR==$start,NR==$end'

there need variables instead of numbers

Sorry for my English
Thank you for answer
# 2  
Old 10-21-2011
Code:
awk -v start=$whatever -v end=$wherever 'NR==start,NR==end' file.txt

or

Code:
sed -n "$start,$end p" file.txt

--ahamed
Last edited by ahamed101; 10-21-2011 at 09:20 AM..
This User Gave Thanks to ahamed101 For This Post:
gizmo16
# 3  
Old 10-21-2011
No need to use cat:
Code:
awk -v s=$start -v e=$end 'NR==s,NR==e' file

This User Gave Thanks to Franklin52 For This Post:
gizmo16
# 4  
Old 10-21-2011
thank you,
One more thing printed by lines will be shown up, do not know how?
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Print row on 4th column to all row

Dear All, I have input : SEG901 5173 9005 5740 SEG902 5227 5284 SEG903 5284 5346 SEG904 5346 9010 SEG905 5400 5456 SEG906 5456 5511 SEG907 5511 9011 SEG908 5572 9015 SEG909 5622 9020 SEG910 5678 5739 SEG911 5739 5796 SEG912 5796 9025 ... (3 Replies)
Discussion started by: attila
3 Replies

2. Shell Programming and Scripting

Get row number from file1 and print that row of file2

Hi. How can we print those rows of file2 which are mentioned in file1. first character of file1 is a row number.. for eg file1 1:abc 3:ghi 6:pqr file2 a abc b def c ghi d jkl e mno f pqr ... (6 Replies)
Discussion started by: Abhiraj Singh
6 Replies

3. Shell Programming and Scripting

Awk to add selected row column data

Looks at the most efficient way to add up the column of data based off of the rows. Random data Name-Number-ID Sarah-2.0-15 Bob-6.3-15 Sally-1.0-10 James-1.0-10 Scotty-10.7-15 So I would select all those who have ID = 15 and then add up total number read - p "Enter ID number" Num ... (3 Replies)
Discussion started by: Ironguru
3 Replies

4. Shell Programming and Scripting

How to print selected fields

HI, I am using below command to display the words, but i am getting awk error. Please help me out on this I am using below code i am getting error as If i use below code i am getting below OP Output from where i am trying to select the fields after delimiter "," from here i want to... (5 Replies)
Discussion started by: darling
5 Replies

5. Shell Programming and Scripting

trying to print selected fields of selected lines by AWK

I am trying to print 1st, 2nd, 13th and 14th fields of a file of line numbers from 29 to 10029. I dont know how to put this in one code. Currently I am removing the selected lines by awk 'NR==29,NR==10029' File1 > File2 and then doing awk '{print $1, $2, $13, $14}' File2 > File3 Can... (3 Replies)
Discussion started by: ananyob
3 Replies

6. Shell Programming and Scripting

shell script(Preferably awk or sed) to print selected number of columns from each row

Hi Experts, The question may look very silly by seeing the title, but please have a look at it clearly. I have a text file where the first 5 columns in each row were supposed to be attributes of a sample(like sample name, number, status etc) and the next 25 columns are parameters on which... (3 Replies)
Discussion started by: ks_reddy
3 Replies

7. Shell Programming and Scripting

Need to print only selected char in a string..?

Hi, I want to print particular chars in a string. for example ie., consider " dear,. roopa$#09%~`';']" as the example string. Here, I want to print only alphanumeric chars.. suppose , if i want only alphanumeric... value would be "dear roopa09" suppose , if i want some spl char(,) with... (2 Replies)
Discussion started by: balan_mca
2 Replies

8. UNIX for Dummies Questions & Answers

How to print selected pages

I have a large file and want to print out, but I don't want to print all, just some pages. Like if the file has 100 pages, I just want to print out page 3-34 and 67-87. How can I do? By the way, I already try "lp -o page-ranges=value" command which doesn't work on my computer because -o <option>... (2 Replies)
Discussion started by: wendyz
2 Replies

9. Shell Programming and Scripting

Print out a selected word.

Hi can anyone assist me on my problem. I try to grep 1 word in 1 line data. Example like below. * Data below located in a.txt, i just wanna grep just processing-time = "12" total-octets = "20080718214210Z" total-pages = "" octets-completed = "20080721064351Z" pages-completed = "2"... (10 Replies)
Discussion started by: anakiar
10 Replies

10. Shell Programming and Scripting

print selected lines

Hi everybody: I try to print in new file selected lines from another file wich depends on the first column. I have done a script like this: lines=( "1" "2" "3" "4" "5" "6" "7" "8" "9" "10" "11" "21" "31" "41" "51" "55" "57" "58" ) ${lines} for lines in ${lines} do awk -v ... (6 Replies)
Discussion started by: tonet
6 Replies
Login or Register to Ask a Question