BEGIN and END format in awk

Thread Tools Search this Thread
Top Forums Shell Programming and Scripting BEGIN and END format in awk
# 1  
Old 01-12-2014
BEGIN and END format in awk

I'm new to awk, trying to understand the basics.
I'm trying to reset the counter everytime the program gets a new file to check.
I figured in the BEGIN part it would work, but it doesn't.

#!/bin/awk -f
BEGIN   {counter=0}
                for ( i=1; i<=NF; i++)
                        sum += $i
                if ( sum == copy)
                        counter += 1
END   {
        print counter
        if(counter == NR)
                print FILENAME " " "YES" " " sum
                print FILENAME " " "NO" " " sum

Would appreciate your help.
# 2  
Old 01-12-2014
Note that a BEGIN block is executed once only before the first input record is read.

So this block is not called for each input file if there are several input files for your awk program.

You could do something like:
FNR == 1 {
             counter = 0

to reset your counter for each input file.
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

In ksh script what is this BEGIN and END in this function?

Can Someone please explain why BEGIN and END statement is used inside function? How does that help in scripting? function fileformatting { CleanupMask="xXxX" sed 's/^.//' < ${AllFile} > ${AllFile}.tmp echo $(wc -l ${AllFile}.tmp) `awk -v CleanupMask=${CleanupMask} ' BEGIN... (2 Replies)
Discussion started by: later_troy
2 Replies

2. Shell Programming and Scripting

Search ad replace using begin and end of the file

Hello Friends , Please help to create script for compare and replace if not matches of set of lines . * Primary* Servername Server1 Location R201 Rack 4 *End Primary* *Secondary* Server Name Server1 IPAddress Application Apache *End of Secondary* Above... (4 Replies)
Discussion started by: rnary
4 Replies

3. Shell Programming and Scripting

Begin/End blocks in awk: confused

I am trying to understand how to use the END block in awk without much success. I have this script that I found: gawk '{count++; keyword = $1} if (count == 3) keyword = "order this" else print keyword " " k } }' << orderfile Is that the way that the END block should be used? I am... (6 Replies)
Discussion started by: newbie2010
6 Replies

4. Shell Programming and Scripting

Get the sum of values in between begin and end in the file

Hi All, test file Begin Script Run at Thu Mar 14 09:24:16 PDT 2013 tst_accounts: ws zip: WS_out_20130313.tar.gz dat: test_20130313.dat count: 63574 loaded: xx pre-merge: xx post-merge: xx timestamp: Thu Mar 14 09:30:42 PDT 2013 tst_accounts: ws zip: WS_out_20130313.tar.gz dat: s_20130313.dat... (6 Replies)
Discussion started by: bmk
6 Replies

5. Shell Programming and Scripting

strange: sed and awk print at end instead of begin of line

Hi! I have a strange behaviour from sed and awk, but I'm not sure, if I'm doing something wrong: I have a list of words, where I want to add the following string at the end of each line: \;\;\;\;0\;1 I try like this: $ cat myfile | awk '{if ( $0 != "" ) print $0"\;\;\;\;0\;1"}' Result:... (5 Replies)
Discussion started by: regisl67
5 Replies

6. UNIX for Dummies Questions & Answers

Dump to another file for a begin and end Pattern

Hi All , I am newbie to linux shell scripting , below are the contents of my log file , i want the lines between a begin pattern and a end pattern for an instance , my begin Pattern is "Transaction Begins for Usr" and end pattern is "Transaction Ends for Usr" into another file Sample file... (1 Reply)
Discussion started by: SARAVANANE
1 Replies

7. Shell Programming and Scripting

Use of Begin IF ,END IF END not working in the sql script

Hi I have written a script .The script runs properly if i write sql queries .But if i use PLSQL commands of BEGIN if end if , end ,then on running the script the comamds are getting printed on the prompt . Ex :temp.sql After connecting to the databse at the sql prompt i type... (1 Reply)
Discussion started by: isha_1
1 Replies

8. Shell Programming and Scripting

awk BEGIN END and string matching problem

Hi, Contents of BBS-list file: foo foo foo awk ' BEGIN { print "Analysis of \"foo\"" } /foo/ { ++n } END { print "\"foo\" appears", n, "times." }' BBS-list Output: Analysis of "foo" "foo" appears 3 times. awk ' (3 Replies)
Discussion started by: cola
3 Replies

9. Shell Programming and Scripting

begin end detection

Hi all, i am new to scripting. i need to write a code to detect begin and end of word that either begins or ends with t,th,d,dh,s,sh i have a set of words in a file containg one word per line. let the filename be aaa.txt. i have an another file bbb.txt which has two lines, just specifying the... (7 Replies)
Discussion started by: blkanth
7 Replies

10. Shell Programming and Scripting

BEGIN END questions

Why would you need to use this in a script? Why can't you just use print to print out what you want printed in the begining and print for what you want at the end. So this: nawk 'BEGIN {print "this is the first line"} {print $1 $2 $3} {print $5 $6} END {print "this is the last line"}' ... (2 Replies)
Discussion started by: llsmr777
2 Replies
Login or Register to Ask a Question

Featured Tech Videos