nawk - Unable to use 2 variables for NR range


Login or Register for Dates, Times and to Reply

 
Thread Tools Search this Thread
# 1  
nawk - Unable to use 2 variables for NR range

Hi,
I need to break an input file into multiple output files. The number of output files is decided by a maximum record count allowed for each file.

Hence I am using the nawk command to recursively retrieve a range of lines from an input file and write them to output files. But I am unable to use variables for the range to be provided against NR.

Code:
cat file.input.XYZ.dat | nawk -F\n '(NR>0 && NR<=10) {print $0}' | tee -a result_tmp.txt

The above works but I need to use $LOWER_LIMIT and $UPPER_LIMIT in the places of 0 and 10.

Please suggest.

Last edited by Scott; 05-25-2010 at 08:31 PM.. Reason: Code tags, please...
# 2  
Code:
# LOWER_LIMIT=10
# UPPER_LIMIT=15
# awk 'NR>x && NR<y' x=$LOWER_LIMIT y=$UPPER_LIMIT in.file

# 3  
Did you mean to try as following?
Code:
cat file.input.XYZ.dat | awk 'NR>x && NR<y' x=$LOWER_LIMIT y=$UPPER_LIMIT result.txt

This only writes the first line in the input file to the output file with the following values.
Code:
LOWER_LIMIT=5
UPPER_LIMIT=10

Any other suggestions?

Last edited by Scott; 05-26-2010 at 06:11 PM.. Reason: Code tags, please...
# 4  
Quote:
Originally Posted by ragz_82
Did you mean to try as following?
Code:
cat file.input.XYZ.dat | awk 'NR>x && NR<y' x=$LOWER_LIMIT y=$UPPER_LIMIT result.txt

This only writes the first line in the input file to the output file with the following values.
Code:
LOWER_LIMIT=5
UPPER_LIMIT=10

Any other suggestions?
why are you 'cat'-ing something into awk AND also using 'result.txt' as awk's input?
Code:
nawk 'NR>x && NR<y' x=$LOWER_LIMIT y=$UPPER_LIMIT  file.input.XYZ.dat

Login or Register for Dates, Times and to Reply

Previous Thread | Next Thread
Thread Tools Search this Thread
Search this Thread:
Advanced Search

Test Your Knowledge in Computers #768
Difficulty: Medium
Smart cache, developed by AMD, is a level 2 or level 3 caching method for multiple execution cores
True or False?

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Multiple bash variables passed into nawk

I have a file that has 2 fields called b_file: 11977 DAR.V3.20150209.1.CSV 3295 DAR.V3.20150209.1.CSV 1721 DAR.V2.20150210.1.CSV I need to search a sftplog using the field 1, but want to maintain the relationship between field 1 and 2. I am passing field 1 as a parameter in a bash loop. ... (14 Replies)
Discussion started by: smenago
14 Replies

2. Shell Programming and Scripting

Two shell variables using nawk

How do you use two shell variables in awk? I am using Solaris 10 and don't have GNU products installed. File (transportation.txt) contents: car make boat model airplane landing snowmobile track bicycle helmet sled housing Thanks to this forum this code works (prints everything from the... (4 Replies)
Discussion started by: thibodc
4 Replies

3. Shell Programming and Scripting

nawk variables

Hi - The following nawk is not working and trying to understand why! nawk -v t="internal_order" '/SAP_RM_ADMIN_SCHEMA/ && ("" toupper(t)) || /SAP_RM_ADMIN_SCHEMA/ && ("" tolower(t))' PBFD100.ksh My intention is to retrieve the line containing SAP_RM_ADMIN_SCHEMA.internal_order but its just not... (6 Replies)
Discussion started by: anduzzi
6 Replies

4. Shell Programming and Scripting

Can I use nawk -v with two or more variables?

Hi, Is it possible in awk/nawk to pass two or more variables in the -v flag? That is: X=1 Y=2 nawk -v X=$X Y=$Y..... Thanks in advance. (7 Replies)
Discussion started by: daytripper1021
7 Replies

5. Shell Programming and Scripting

Passing the nawk variables to the shell

nawk '($1 ~ "1000") && ($1 ~ "5665" ) { sub ($6,"89");flag =1;print }' old.txt >> new.txt I want to set a flag in awk , if the both conditions are met. I want to pass this flag to shell Can anyone please help me on this (1 Reply)
Discussion started by: prav076
1 Replies

6. Shell Programming and Scripting

how to access values of awk/nawk variables outside the awk/nawk block?

i'm new to shell scripting and have a problem please help me in the script i have a nawk block which has a variable count nawk{ . . . count=count+1 print count } now i want to access the value of the count variable outside the awk block,like.. s=`expr count / m` (m is... (5 Replies)
Discussion started by: saniya
5 Replies

7. Shell Programming and Scripting

I can't seem to pass variables properly into a nawk statement

Ok, So up front I'm going to say that I'm a very elementary scripter, and I tend to use tools I don't fully understand, but I shotgun at something until I can get it to work...that said, I can't for the life of me understand why I can't get this to go down the way I want it to. The goal: -to... (6 Replies)
Discussion started by: DeCoTwc
6 Replies

8. Shell Programming and Scripting

nawk - Passing variables

Hi, I am passing the varibale using nawk -v to search the pattern from the file. But this variable is not accepting. I couldn't get the crrect output. Help me regarding..... nawk -v PGMNAME="$prog" ' { $0 ~ /PGMNAME/ { .................. ................. ... (3 Replies)
Discussion started by: sharif
3 Replies

9. Shell Programming and Scripting

Assigning nawk output to variables

I do a lot of command line scripting to capture data from files or other command output. I've checked in a number of Unix and scripting books but for the life of me I can't find out how to asign field data from nawk output into variables that I can manipulate later. For example, reading a two... (6 Replies)
Discussion started by: steveje0711
6 Replies

10. Shell Programming and Scripting

nawk and variables

Hi guy's Im trying to pass variables into nawk and then match them on a value within a record but it don't seem to be working. If i put in the dates i want to see then it works fine.. #!/usr/bin/ksh -x YEST=$(/usr/local/bin/perl -e... (8 Replies)
Discussion started by: plimpix
8 Replies

Featured Tech Videos